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Merge branch 'linus' into sched/core, to pick up fixes

Browse source 
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2016-11-11 08:27:11 +01:00
commit bfdd5537dc
918 changed files with 10843 additions and 6633 deletions
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5
CREDITS
View file

@ -1864,10 +1864,11 @@ S: The Netherlands
N: Martin Kepplinger
E: martink@posteo.de
E: martin.kepplinger@theobroma-systems.com
E: martin.kepplinger@ginzinger.com
W: http://www.martinkepplinger.com
D: mma8452 accelerators iio driver
D: Kernel cleanups
D: pegasus_notetaker input driver
D: Kernel fixes and cleanups
S: Garnisonstraße 26
S: 4020 Linz
S: Austria

7
Documentation/ABI/testing/sysfs-class-cxl
View file

@ -220,8 +220,11 @@ What: /sys/class/cxl/<card>/reset
Date: October 2014
Contact: linuxppc-dev@lists.ozlabs.org
Description: write only
Writing 1 will issue a PERST to card which may cause the card
to reload the FPGA depending on load_image_on_perst.
Writing 1 will issue a PERST to card provided there are no
contexts active on any one of the card AFUs. This may cause
the card to reload the FPGA depending on load_image_on_perst.
Writing -1 will do a force PERST irrespective of any active
contexts on the card AFUs.
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/perst_reloads_same_image (not in a guest)

1
Documentation/device-mapper/dm-raid.txt
View file

@ -309,3 +309,4 @@ Version History
with a reshape in progress.
1.9.0 Add support for RAID level takeover/reshape/region size
and set size reduction.
1.9.1 Fix activation of existing RAID 4/10 mapped devices

16
Documentation/devicetree/bindings/clock/uniphier-clock.txt
View file

@ -24,7 +24,7 @@ Example:
reg = <0x61840000 0x4000>;
clock {
compatible = "socionext,uniphier-ld20-clock";
compatible = "socionext,uniphier-ld11-clock";
#clock-cells = <1>;
};
@ -43,8 +43,8 @@ Provided clocks:
21: USB3 ch1 PHY1
Media I/O (MIO) clock
---------------------
Media I/O (MIO) clock, SD clock
-------------------------------
Required properties:
- compatible: should be one of the following:
@ -52,10 +52,10 @@ Required properties:
"socionext,uniphier-ld4-mio-clock" - for LD4 SoC.
"socionext,uniphier-pro4-mio-clock" - for Pro4 SoC.
"socionext,uniphier-sld8-mio-clock" - for sLD8 SoC.
"socionext,uniphier-pro5-mio-clock" - for Pro5 SoC.
"socionext,uniphier-pxs2-mio-clock" - for PXs2/LD6b SoC.
"socionext,uniphier-pro5-sd-clock" - for Pro5 SoC.
"socionext,uniphier-pxs2-sd-clock" - for PXs2/LD6b SoC.
"socionext,uniphier-ld11-mio-clock" - for LD11 SoC.
"socionext,uniphier-ld20-mio-clock" - for LD20 SoC.
"socionext,uniphier-ld20-sd-clock" - for LD20 SoC.
- #clock-cells: should be 1.
Example:
@ -66,7 +66,7 @@ Example:
reg = <0x59810000 0x800>;
clock {
compatible = "socionext,uniphier-ld20-mio-clock";
compatible = "socionext,uniphier-ld11-mio-clock";
#clock-cells = <1>;
};
@ -112,7 +112,7 @@ Example:
reg = <0x59820000 0x200>;
clock {
compatible = "socionext,uniphier-ld20-peri-clock";
compatible = "socionext,uniphier-ld11-peri-clock";
#clock-cells = <1>;
};

23
Documentation/devicetree/bindings/ipmi/aspeed,ast2400-bt-bmc.txt Normal file
View file

@ -0,0 +1,23 @@
* Aspeed BT (Block Transfer) IPMI interface
The Aspeed SOCs (AST2400 and AST2500) are commonly used as BMCs
(BaseBoard Management Controllers) and the BT interface can be used to
perform in-band IPMI communication with their host.
Required properties:
- compatible : should be "aspeed,ast2400-bt-bmc"
- reg: physical address and size of the registers
Optional properties:
- interrupts: interrupt generated by the BT interface. without an
interrupt, the driver will operate in poll mode.
Example:
ibt@1e789140 {
compatible = "aspeed,ast2400-bt-bmc";
reg = <0x1e789140 0x18>;
interrupts = <8>;
};

0
Documentation/devicetree/bindings/ipmi.txt → Documentation/devicetree/bindings/ipmi/ipmi-smic.txt
View file

1
Documentation/devicetree/bindings/net/marvell-orion-net.txt
View file

@ -49,6 +49,7 @@ Optional port properties:
and
- phy-handle: See ethernet.txt file in the same directory.
- phy-mode: See ethernet.txt file in the same directory.
or

62
Documentation/devicetree/bindings/reset/uniphier-reset.txt
View file

@ -6,25 +6,25 @@ System reset
Required properties:
- compatible: should be one of the following:
"socionext,uniphier-sld3-reset" - for PH1-sLD3 SoC.
"socionext,uniphier-ld4-reset" - for PH1-LD4 SoC.
"socionext,uniphier-pro4-reset" - for PH1-Pro4 SoC.
"socionext,uniphier-sld8-reset" - for PH1-sLD8 SoC.
"socionext,uniphier-pro5-reset" - for PH1-Pro5 SoC.
"socionext,uniphier-pxs2-reset" - for ProXstream2/PH1-LD6b SoC.
"socionext,uniphier-ld11-reset" - for PH1-LD11 SoC.
"socionext,uniphier-ld20-reset" - for PH1-LD20 SoC.
"socionext,uniphier-sld3-reset" - for sLD3 SoC.
"socionext,uniphier-ld4-reset" - for LD4 SoC.
"socionext,uniphier-pro4-reset" - for Pro4 SoC.
"socionext,uniphier-sld8-reset" - for sLD8 SoC.
"socionext,uniphier-pro5-reset" - for Pro5 SoC.
"socionext,uniphier-pxs2-reset" - for PXs2/LD6b SoC.
"socionext,uniphier-ld11-reset" - for LD11 SoC.
"socionext,uniphier-ld20-reset" - for LD20 SoC.
- #reset-cells: should be 1.
Example:
sysctrl@61840000 {
compatible = "socionext,uniphier-ld20-sysctrl",
compatible = "socionext,uniphier-ld11-sysctrl",
"simple-mfd", "syscon";
reg = <0x61840000 0x4000>;
reset {
compatible = "socionext,uniphier-ld20-reset";
compatible = "socionext,uniphier-ld11-reset";
#reset-cells = <1>;
};
@ -32,30 +32,30 @@ Example:
};
Media I/O (MIO) reset
---------------------
Media I/O (MIO) reset, SD reset
-------------------------------
Required properties:
- compatible: should be one of the following:
"socionext,uniphier-sld3-mio-reset" - for PH1-sLD3 SoC.
"socionext,uniphier-ld4-mio-reset" - for PH1-LD4 SoC.
"socionext,uniphier-pro4-mio-reset" - for PH1-Pro4 SoC.
"socionext,uniphier-sld8-mio-reset" - for PH1-sLD8 SoC.
"socionext,uniphier-pro5-mio-reset" - for PH1-Pro5 SoC.
"socionext,uniphier-pxs2-mio-reset" - for ProXstream2/PH1-LD6b SoC.
"socionext,uniphier-ld11-mio-reset" - for PH1-LD11 SoC.
"socionext,uniphier-ld20-mio-reset" - for PH1-LD20 SoC.
"socionext,uniphier-sld3-mio-reset" - for sLD3 SoC.
"socionext,uniphier-ld4-mio-reset" - for LD4 SoC.
"socionext,uniphier-pro4-mio-reset" - for Pro4 SoC.
"socionext,uniphier-sld8-mio-reset" - for sLD8 SoC.
"socionext,uniphier-pro5-sd-reset" - for Pro5 SoC.
"socionext,uniphier-pxs2-sd-reset" - for PXs2/LD6b SoC.
"socionext,uniphier-ld11-mio-reset" - for LD11 SoC.
"socionext,uniphier-ld20-sd-reset" - for LD20 SoC.
- #reset-cells: should be 1.
Example:
mioctrl@59810000 {
compatible = "socionext,uniphier-ld20-mioctrl",
compatible = "socionext,uniphier-ld11-mioctrl",
"simple-mfd", "syscon";
reg = <0x59810000 0x800>;
reset {
compatible = "socionext,uniphier-ld20-mio-reset";
compatible = "socionext,uniphier-ld11-mio-reset";
#reset-cells = <1>;
};
@ -68,24 +68,24 @@ Peripheral reset
Required properties:
- compatible: should be one of the following:
"socionext,uniphier-ld4-peri-reset" - for PH1-LD4 SoC.
"socionext,uniphier-pro4-peri-reset" - for PH1-Pro4 SoC.
"socionext,uniphier-sld8-peri-reset" - for PH1-sLD8 SoC.
"socionext,uniphier-pro5-peri-reset" - for PH1-Pro5 SoC.
"socionext,uniphier-pxs2-peri-reset" - for ProXstream2/PH1-LD6b SoC.
"socionext,uniphier-ld11-peri-reset" - for PH1-LD11 SoC.
"socionext,uniphier-ld20-peri-reset" - for PH1-LD20 SoC.
"socionext,uniphier-ld4-peri-reset" - for LD4 SoC.
"socionext,uniphier-pro4-peri-reset" - for Pro4 SoC.
"socionext,uniphier-sld8-peri-reset" - for sLD8 SoC.
"socionext,uniphier-pro5-peri-reset" - for Pro5 SoC.
"socionext,uniphier-pxs2-peri-reset" - for PXs2/LD6b SoC.
"socionext,uniphier-ld11-peri-reset" - for LD11 SoC.
"socionext,uniphier-ld20-peri-reset" - for LD20 SoC.
- #reset-cells: should be 1.
Example:
perictrl@59820000 {
compatible = "socionext,uniphier-ld20-perictrl",
compatible = "socionext,uniphier-ld11-perictrl",
"simple-mfd", "syscon";
reg = <0x59820000 0x200>;
reset {
compatible = "socionext,uniphier-ld20-peri-reset";
compatible = "socionext,uniphier-ld11-peri-reset";
#reset-cells = <1>;
};

4
Documentation/devicetree/bindings/serial/cdns,uart.txt
View file

@ -1,7 +1,9 @@
Binding for Cadence UART Controller
Required properties:
- compatible : should be "cdns,uart-r1p8", or "xlnx,xuartps"
- compatible :
Use "xlnx,xuartps","cdns,uart-r1p8" for Zynq-7xxx SoC.
Use "xlnx,zynqmp-uart","cdns,uart-r1p12" for Zynq Ultrascale+ MPSoC.
- reg: Should contain UART controller registers location and length.
- interrupts: Should contain UART controller interrupts.
- clocks: Must contain phandles to the UART clocks

8
Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
View file

@ -9,6 +9,14 @@ Required properties:
- "renesas,scifb-r8a73a4" for R8A73A4 (R-Mobile APE6) SCIFB compatible UART.
- "renesas,scifa-r8a7740" for R8A7740 (R-Mobile A1) SCIFA compatible UART.
- "renesas,scifb-r8a7740" for R8A7740 (R-Mobile A1) SCIFB compatible UART.
- "renesas,scif-r8a7743" for R8A7743 (RZ/G1M) SCIF compatible UART.
- "renesas,scifa-r8a7743" for R8A7743 (RZ/G1M) SCIFA compatible UART.
- "renesas,scifb-r8a7743" for R8A7743 (RZ/G1M) SCIFB compatible UART.
- "renesas,hscif-r8a7743" for R8A7743 (RZ/G1M) HSCIF compatible UART.
- "renesas,scif-r8a7745" for R8A7745 (RZ/G1E) SCIF compatible UART.
- "renesas,scifa-r8a7745" for R8A7745 (RZ/G1E) SCIFA compatible UART.
- "renesas,scifb-r8a7745" for R8A7745 (RZ/G1E) SCIFB compatible UART.
- "renesas,hscif-r8a7745" for R8A7745 (RZ/G1E) HSCIF compatible UART.
- "renesas,scif-r8a7778" for R8A7778 (R-Car M1) SCIF compatible UART.
- "renesas,scif-r8a7779" for R8A7779 (R-Car H1) SCIF compatible UART.
- "renesas,scif-r8a7790" for R8A7790 (R-Car H2) SCIF compatible UART.

24
Documentation/devicetree/bindings/timer/jcore,pit.txt Normal file
View file

@ -0,0 +1,24 @@
J-Core Programmable Interval Timer and Clocksource
Required properties:
- compatible: Must be "jcore,pit".
- reg: Memory region(s) for timer/clocksource registers. For SMP,
there should be one region per cpu, indexed by the sequential,
zero-based hardware cpu number.
- interrupts: An interrupt to assign for the timer. The actual pit
core is integrated with the aic and allows the timer interrupt
assignment to be programmed by software, but this property is
required in order to reserve an interrupt number that doesn't
conflict with other devices.
Example:
timer@200 {
compatible = "jcore,pit";
reg = < 0x200 0x30 0x500 0x30 >;
interrupts = < 0x48 >;
};

5
Documentation/devicetree/bindings/usb/dwc2.txt
View file

@ -28,10 +28,7 @@ Refer to phy/phy-bindings.txt for generic phy consumer properties
- g-use-dma: enable dma usage in gadget driver.
- g-rx-fifo-size: size of rx fifo size in gadget mode.
- g-np-tx-fifo-size: size of non-periodic tx fifo size in gadget mode.
Deprecated properties:
- g-tx-fifo-size: size of periodic tx fifo per endpoint (except ep0)
in gadget mode.
- g-tx-fifo-size: size of periodic tx fifo per endpoint (except ep0) in gadget mode.
Example:

26
Documentation/filesystems/proc.txt
View file

@ -395,32 +395,6 @@ is not associated with a file:
or if empty, the mapping is anonymous.
The /proc/PID/task/TID/maps is a view of the virtual memory from the viewpoint
of the individual tasks of a process. In this file you will see a mapping marked
as [stack] if that task sees it as a stack. Hence, for the example above, the
task-level map, i.e. /proc/PID/task/TID/maps for thread 1001 will look like this:
08048000-08049000 r-xp 00000000 03:00 8312 /opt/test
08049000-0804a000 rw-p 00001000 03:00 8312 /opt/test
0804a000-0806b000 rw-p 00000000 00:00 0 [heap]
a7cb1000-a7cb2000 ---p 00000000 00:00 0
a7cb2000-a7eb2000 rw-p 00000000 00:00 0
a7eb2000-a7eb3000 ---p 00000000 00:00 0
a7eb3000-a7ed5000 rw-p 00000000 00:00 0 [stack]
a7ed5000-a8008000 r-xp 00000000 03:00 4222 /lib/libc.so.6
a8008000-a800a000 r--p 00133000 03:00 4222 /lib/libc.so.6
a800a000-a800b000 rw-p 00135000 03:00 4222 /lib/libc.so.6
a800b000-a800e000 rw-p 00000000 00:00 0
a800e000-a8022000 r-xp 00000000 03:00 14462 /lib/libpthread.so.0
a8022000-a8023000 r--p 00013000 03:00 14462 /lib/libpthread.so.0
a8023000-a8024000 rw-p 00014000 03:00 14462 /lib/libpthread.so.0
a8024000-a8027000 rw-p 00000000 00:00 0
a8027000-a8043000 r-xp 00000000 03:00 8317 /lib/ld-linux.so.2
a8043000-a8044000 r--p 0001b000 03:00 8317 /lib/ld-linux.so.2
a8044000-a8045000 rw-p 0001c000 03:00 8317 /lib/ld-linux.so.2
aff35000-aff4a000 rw-p 00000000 00:00 0
ffffe000-fffff000 r-xp 00000000 00:00 0 [vdso]
The /proc/PID/smaps is an extension based on maps, showing the memory
consumption for each of the process's mappings. For each of mappings there
is a series of lines such as the following:

11
Documentation/gpio/board.txt
View file

@ -6,7 +6,7 @@ Note that it only applies to the new descriptor-based interface. For a
description of the deprecated integer-based GPIO interface please refer to
gpio-legacy.txt (actually, there is no real mapping possible with the old
interface; you just fetch an integer from somewhere and request the
corresponding GPIO.
corresponding GPIO).
All platforms can enable the GPIO library, but if the platform strictly
requires GPIO functionality to be present, it needs to select GPIOLIB from its
@ -162,6 +162,9 @@ The driver controlling "foo.0" will then be able to obtain its GPIOs as follows:
Since the "led" GPIOs are mapped as active-high, this example will switch their
signals to 1, i.e. enabling the LEDs. And for the "power" GPIO, which is mapped
as active-low, its actual signal will be 0 after this code. Contrary to the legacy
integer GPIO interface, the active-low property is handled during mapping and is
thus transparent to GPIO consumers.
as active-low, its actual signal will be 0 after this code. Contrary to the
legacy integer GPIO interface, the active-low property is handled during
mapping and is thus transparent to GPIO consumers.
A set of functions such as gpiod_set_value() is available to work with
the new descriptor-oriented interface.

8
Documentation/networking/netdev-FAQ.txt
View file

@ -29,8 +29,8 @@ A: There are always two trees (git repositories) in play. Both are driven
Linus, and net-next is where the new code goes for the future release.
You can find the trees here:
http://git.kernel.org/?p=linux/kernel/git/davem/net.git
http://git.kernel.org/?p=linux/kernel/git/davem/net-next.git
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git
Q: How often do changes from these trees make it to the mainline Linus tree?
@ -76,7 +76,7 @@ Q: So where are we now in this cycle?
A: Load the mainline (Linus) page here:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
and note the top of the "tags" section. If it is rc1, it is early
in the dev cycle. If it was tagged rc7 a week ago, then a release
@ -123,7 +123,7 @@ A: Normally Greg Kroah-Hartman collects stable commits himself, but
It contains the patches which Dave has selected, but not yet handed
off to Greg. If Greg already has the patch, then it will be here:
http://git.kernel.org/cgit/linux/kernel/git/stable/stable-queue.git
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git
A quick way to find whether the patch is in this stable-queue is
to simply clone the repo, and then git grep the mainline commit ID, e.g.

18
Documentation/networking/nf_conntrack-sysctl.txt
View file

@ -33,24 +33,6 @@ nf_conntrack_events - BOOLEAN
If this option is enabled, the connection tracking code will
provide userspace with connection tracking events via ctnetlink.
nf_conntrack_events_retry_timeout - INTEGER (seconds)
default 15
This option is only relevant when "reliable connection tracking
events" are used. Normally, ctnetlink is "lossy", that is,
events are normally dropped when userspace listeners can't keep up.
Userspace can request "reliable event mode". When this mode is
active, the conntrack will only be destroyed after the event was
delivered. If event delivery fails, the kernel periodically
re-tries to send the event to userspace.
This is the maximum interval the kernel should use when re-trying
to deliver the destroy event.
A higher number means there will be fewer delivery retries and it
will take longer for a backlog to be processed.
nf_conntrack_expect_max - INTEGER
Maximum size of expectation table. Default value is
nf_conntrack_buckets / 256. Minimum is 1.

12
Documentation/virtual/kvm/locking.txt
View file

@ -4,7 +4,17 @@ KVM Lock Overview
1. Acquisition Orders
---------------------
(to be written)
The acquisition orders for mutexes are as follows:
- kvm->lock is taken outside vcpu->mutex
- kvm->lock is taken outside kvm->slots_lock and kvm->irq_lock
- kvm->slots_lock is taken outside kvm->irq_lock, though acquiring
them together is quite rare.
For spinlocks, kvm_lock is taken outside kvm->mmu_lock. Everything
else is a leaf: no other lock is taken inside the critical sections.
2: Exception
------------

73
MAINTAINERS
View file

@ -1442,6 +1442,7 @@ F: drivers/cpufreq/mvebu-cpufreq.c
F: arch/arm/configs/mvebu_*_defconfig
ARM/Marvell Berlin SoC support
M: Jisheng Zhang <jszhang@marvell.com>
M: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
@ -2551,15 +2552,18 @@ S: Supported
F: drivers/net/ethernet/broadcom/genet/
BROADCOM BNX2 GIGABIT ETHERNET DRIVER
M: Sony Chacko <sony.chacko@qlogic.com>
M: Dept-HSGLinuxNICDev@qlogic.com
M: Rasesh Mody <rasesh.mody@cavium.com>
M: Harish Patil <harish.patil@cavium.com>
M: Dept-GELinuxNICDev@cavium.com
L: netdev@vger.kernel.org
S: Supported
F: drivers/net/ethernet/broadcom/bnx2.*
F: drivers/net/ethernet/broadcom/bnx2_*
BROADCOM BNX2X 10 GIGABIT ETHERNET DRIVER
M: Ariel Elior <ariel.elior@qlogic.com>
M: Yuval Mintz <Yuval.Mintz@cavium.com>
M: Ariel Elior <ariel.elior@cavium.com>
M: everest-linux-l2@cavium.com
L: netdev@vger.kernel.org
S: Supported
F: drivers/net/ethernet/broadcom/bnx2x/
@ -2766,7 +2770,9 @@ S: Supported
F: drivers/scsi/bfa/
BROCADE BNA 10 GIGABIT ETHERNET DRIVER
M: Rasesh Mody <rasesh.mody@qlogic.com>
M: Rasesh Mody <rasesh.mody@cavium.com>
M: Sudarsana Kalluru <sudarsana.kalluru@cavium.com>
M: Dept-GELinuxNICDev@cavium.com
L: netdev@vger.kernel.org
S: Supported
F: drivers/net/ethernet/brocade/bna/
@ -4620,8 +4626,9 @@ F: sound/usb/misc/ua101.c
EXTENSIBLE FIRMWARE INTERFACE (EFI)
M: Matt Fleming <matt@codeblueprint.co.uk>
M: Ard Biesheuvel <ard.biesheuvel@linaro.org>
L: linux-efi@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git
S: Maintained
F: Documentation/efi-stub.txt
F: arch/ia64/kernel/efi.c
@ -5286,6 +5293,12 @@ M: Joe Perches <joe@perches.com>
S: Maintained
F: scripts/get_maintainer.pl
GENWQE (IBM Generic Workqueue Card)
M: Frank Haverkamp <haver@linux.vnet.ibm.com>
M: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
S: Supported
F: drivers/misc/genwqe/
GFS2 FILE SYSTEM
M: Steven Whitehouse <swhiteho@redhat.com>
M: Bob Peterson <rpeterso@redhat.com>
@ -7912,6 +7925,10 @@ F: mm/
MEMORY TECHNOLOGY DEVICES (MTD)
M: David Woodhouse <dwmw2@infradead.org>
M: Brian Norris <computersforpeace@gmail.com>
M: Boris Brezillon <boris.brezillon@free-electrons.com>
M: Marek Vasut <marek.vasut@gmail.com>
M: Richard Weinberger <richard@nod.at>
M: Cyrille Pitchen <cyrille.pitchen@atmel.com>
L: linux-mtd@lists.infradead.org
W: http://www.linux-mtd.infradead.org/
Q: http://patchwork.ozlabs.org/project/linux-mtd/list/
@ -8099,6 +8116,7 @@ S: Maintained
F: drivers/media/dvb-frontends/mn88473*
MODULE SUPPORT
M: Jessica Yu <jeyu@redhat.com>
M: Rusty Russell <rusty@rustcorp.com.au>
S: Maintained
F: include/linux/module.h
@ -8212,7 +8230,7 @@ F: include/linux/mfd/
MULTIMEDIA CARD (MMC), SECURE DIGITAL (SD) AND SDIO SUBSYSTEM
M: Ulf Hansson <ulf.hansson@linaro.org>
L: linux-mmc@vger.kernel.org
T: git git://git.linaro.org/people/ulf.hansson/mmc.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc.git
S: Maintained
F: Documentation/devicetree/bindings/mmc/
F: drivers/mmc/
@ -8508,11 +8526,10 @@ F: Documentation/devicetree/bindings/net/wireless/
F: drivers/net/wireless/
NETXEN (1/10) GbE SUPPORT
M: Manish Chopra <manish.chopra@qlogic.com>
M: Sony Chacko <sony.chacko@qlogic.com>
M: Rajesh Borundia <rajesh.borundia@qlogic.com>
M: Manish Chopra <manish.chopra@cavium.com>
M: Rahul Verma <rahul.verma@cavium.com>
M: Dept-GELinuxNICDev@cavium.com
L: netdev@vger.kernel.org
W: http://www.qlogic.com
S: Supported
F: drivers/net/ethernet/qlogic/netxen/
@ -9299,7 +9316,7 @@ S: Maintained
F: drivers/pci/host/*designware*
PCI DRIVER FOR SYNOPSYS PROTOTYPING DEVICE
M: Joao Pinto <jpinto@synopsys.com>
M: Jose Abreu <Jose.Abreu@synopsys.com>
L: linux-pci@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/pci/designware-pcie.txt
@ -9888,33 +9905,32 @@ F: Documentation/scsi/LICENSE.qla4xxx
F: drivers/scsi/qla4xxx/
QLOGIC QLA3XXX NETWORK DRIVER
M: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
M: Ron Mercer <ron.mercer@qlogic.com>
M: linux-driver@qlogic.com
M: Dept-GELinuxNICDev@cavium.com
L: netdev@vger.kernel.org
S: Supported
F: Documentation/networking/LICENSE.qla3xxx
F: drivers/net/ethernet/qlogic/qla3xxx.*
QLOGIC QLCNIC (1/10)Gb ETHERNET DRIVER
M: Dept-GELinuxNICDev@qlogic.com
M: Harish Patil <harish.patil@cavium.com>
M: Manish Chopra <manish.chopra@cavium.com>
M: Dept-GELinuxNICDev@cavium.com
L: netdev@vger.kernel.org
S: Supported
F: drivers/net/ethernet/qlogic/qlcnic/
QLOGIC QLGE 10Gb ETHERNET DRIVER
M: Harish Patil <harish.patil@qlogic.com>
M: Sudarsana Kalluru <sudarsana.kalluru@qlogic.com>
M: Dept-GELinuxNICDev@qlogic.com
M: linux-driver@qlogic.com
M: Harish Patil <harish.patil@cavium.com>
M: Manish Chopra <manish.chopra@cavium.com>
M: Dept-GELinuxNICDev@cavium.com
L: netdev@vger.kernel.org
S: Supported
F: drivers/net/ethernet/qlogic/qlge/
QLOGIC QL4xxx ETHERNET DRIVER
M: Yuval Mintz <Yuval.Mintz@qlogic.com>
M: Ariel Elior <Ariel.Elior@qlogic.com>
M: everest-linux-l2@qlogic.com
M: Yuval Mintz <Yuval.Mintz@cavium.com>
M: Ariel Elior <Ariel.Elior@cavium.com>
M: everest-linux-l2@cavium.com
L: netdev@vger.kernel.org
S: Supported
F: drivers/net/ethernet/qlogic/qed/
@ -11392,6 +11408,17 @@ W: http://www.st.com/spear
S: Maintained
F: drivers/clk/spear/
SPI NOR SUBSYSTEM
M: Cyrille Pitchen <cyrille.pitchen@atmel.com>
M: Marek Vasut <marek.vasut@gmail.com>
L: linux-mtd@lists.infradead.org
W: http://www.linux-mtd.infradead.org/
Q: http://patchwork.ozlabs.org/project/linux-mtd/list/
T: git git://github.com/spi-nor/linux.git
S: Maintained
F: drivers/mtd/spi-nor/
F: include/linux/mtd/spi-nor.h
SPI SUBSYSTEM
M: Mark Brown <broonie@kernel.org>
L: linux-spi@vger.kernel.org
@ -12771,6 +12798,7 @@ F: include/uapi/linux/virtio_console.h
VIRTIO CORE, NET AND BLOCK DRIVERS
M: "Michael S. Tsirkin" <mst@redhat.com>
M: Jason Wang <jasowang@redhat.com>
L: virtualization@lists.linux-foundation.org
S: Maintained
F: Documentation/devicetree/bindings/virtio/
@ -12801,6 +12829,7 @@ F: include/uapi/linux/virtio_gpu.h
VIRTIO HOST (VHOST)
M: "Michael S. Tsirkin" <mst@redhat.com>
M: Jason Wang <jasowang@redhat.com>
L: kvm@vger.kernel.org
L: virtualization@lists.linux-foundation.org
L: netdev@vger.kernel.org

2
Makefile
View file

@ -1,7 +1,7 @@
VERSION = 4
PATCHLEVEL = 9
SUBLEVEL = 0
EXTRAVERSION = -rc1
EXTRAVERSION = -rc4
NAME = Psychotic Stoned Sheep
# *DOCUMENTATION*

27
arch/arc/Kconfig
View file

@ -41,6 +41,8 @@ config ARC
select PERF_USE_VMALLOC
select HAVE_DEBUG_STACKOVERFLOW
select HAVE_GENERIC_DMA_COHERENT
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_LZMA
config MIGHT_HAVE_PCI
bool
@ -186,14 +188,6 @@ if SMP
config ARC_HAS_COH_CACHES
def_bool n
config ARC_MCIP
bool "ARConnect Multicore IP (MCIP) Support "
depends on ISA_ARCV2
help
This IP block enables SMP in ARC-HS38 cores.
It provides for cross-core interrupts, multi-core debug
hardware semaphores, shared memory,....
config NR_CPUS
int "Maximum number of CPUs (2-4096)"
range 2 4096
@ -211,6 +205,15 @@ config ARC_SMP_HALT_ON_RESET
endif #SMP
config ARC_MCIP
bool "ARConnect Multicore IP (MCIP) Support "
depends on ISA_ARCV2
default y if SMP
help
This IP block enables SMP in ARC-HS38 cores.
It provides for cross-core interrupts, multi-core debug
hardware semaphores, shared memory,....
menuconfig ARC_CACHE
bool "Enable Cache Support"
default y
@ -537,14 +540,6 @@ config ARC_DBG_TLB_PARANOIA
bool "Paranoia Checks in Low Level TLB Handlers"
default n
config ARC_DBG_TLB_MISS_COUNT
bool "Profile TLB Misses"
default n
select DEBUG_FS
help
Counts number of I and D TLB Misses and exports them via Debugfs
The counters can be cleared via Debugfs as well
endif
config ARC_UBOOT_SUPPORT

3
arch/arc/Makefile
View file

@ -50,9 +50,6 @@ atleast_gcc44 := $(call cc-ifversion, -ge, 0404, y)
cflags-$(atleast_gcc44) += -fsection-anchors
cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock
cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape
ifdef CONFIG_ISA_ARCV2
ifndef CONFIG_ARC_HAS_LL64

16
arch/arc/boot/Makefile
View file

@ -14,9 +14,15 @@ UIMAGE_ENTRYADDR = $(LINUX_START_TEXT)
suffix-y := bin
suffix-$(CONFIG_KERNEL_GZIP) := gz
suffix-$(CONFIG_KERNEL_LZMA) := lzma
targets += uImage uImage.bin uImage.gz
extra-y += vmlinux.bin vmlinux.bin.gz
targets += uImage
targets += uImage.bin
targets += uImage.gz
targets += uImage.lzma
extra-y += vmlinux.bin
extra-y += vmlinux.bin.gz
extra-y += vmlinux.bin.lzma
$(obj)/vmlinux.bin: vmlinux FORCE
$(call if_changed,objcopy)
@ -24,12 +30,18 @@ $(obj)/vmlinux.bin: vmlinux FORCE
$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
$(call if_changed,gzip)
$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
$(call if_changed,lzma)
$(obj)/uImage.bin: $(obj)/vmlinux.bin FORCE
$(call if_changed,uimage,none)
$(obj)/uImage.gz: $(obj)/vmlinux.bin.gz FORCE
$(call if_changed,uimage,gzip)
$(obj)/uImage.lzma: $(obj)/vmlinux.bin.lzma FORCE
$(call if_changed,uimage,lzma)
$(obj)/uImage: $(obj)/uImage.$(suffix-y)
@ln -sf $(notdir $<) $@
@echo ' Image $@ is ready'

3
arch/arc/include/asm/arcregs.h
View file

@ -349,10 +349,11 @@ struct cpuinfo_arc {
struct cpuinfo_arc_bpu bpu;
struct bcr_identity core;
struct bcr_isa isa;
const char *details, *name;
unsigned int vec_base;
struct cpuinfo_arc_ccm iccm, dccm;
struct {
unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, pad1:3,
unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, swape:1, pad1:2,
fpu_sp:1, fpu_dp:1, pad2:6,
debug:1, ap:1, smart:1, rtt:1, pad3:4,
timer0:1, timer1:1, rtc:1, gfrc:1, pad4:4;

2
arch/arc/include/asm/cache.h
View file

@ -53,7 +53,7 @@ extern void arc_cache_init(void);
extern char *arc_cache_mumbojumbo(int cpu_id, char *buf, int len);
extern void read_decode_cache_bcr(void);
extern int ioc_exists;
extern int ioc_enable;
extern unsigned long perip_base, perip_end;
#endif /* !__ASSEMBLY__ */

2
arch/arc/include/asm/elf.h
View file

@ -54,7 +54,7 @@ extern int elf_check_arch(const struct elf32_hdr *);
* the loader. We need to make sure that it is out of the way of the program
* that it will "exec", and that there is sufficient room for the brk.
*/
#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
#define ELF_ET_DYN_BASE (2UL * TASK_SIZE / 3)
/*
* When the program starts, a1 contains a pointer to a function to be

16
arch/arc/include/asm/mcip.h
View file

@ -55,6 +55,22 @@ struct mcip_cmd {
#define IDU_M_DISTRI_DEST 0x2
};
struct mcip_bcr {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad3:8,
idu:1, llm:1, num_cores:6,
iocoh:1, gfrc:1, dbg:1, pad2:1,
msg:1, sem:1, ipi:1, pad:1,
ver:8;
#else
unsigned int ver:8,
pad:1, ipi:1, sem:1, msg:1,
pad2:1, dbg:1, gfrc:1, iocoh:1,
num_cores:6, llm:1, idu:1,
pad3:8;
#endif
};
/*
* MCIP programming model
*

1
arch/arc/include/asm/module.h
View file

@ -18,6 +18,7 @@
struct mod_arch_specific {
void *unw_info;
int unw_sec_idx;
const char *secstr;
};
#endif

6
arch/arc/include/asm/setup.h
View file

@ -27,11 +27,6 @@ struct id_to_str {
const char *str;
};
struct cpuinfo_data {
struct id_to_str info;
int up_range;
};
extern int root_mountflags, end_mem;
void setup_processor(void);
@ -43,5 +38,6 @@ void __init setup_arch_memory(void);
#define IS_USED_RUN(v) ((v) ? "" : "(not used) ")
#define IS_USED_CFG(cfg) IS_USED_RUN(IS_ENABLED(cfg))
#define IS_AVAIL2(v, s, cfg) IS_AVAIL1(v, s), IS_AVAIL1(v, IS_USED_CFG(cfg))
#define IS_AVAIL3(v, v2, s) IS_AVAIL1(v, s), IS_AVAIL1(v, IS_DISABLED_RUN(v2))
#endif /* __ASMARC_SETUP_H */

1
arch/arc/include/asm/syscalls.h
View file

@ -17,6 +17,7 @@ int sys_clone_wrapper(int, int, int, int, int);
int sys_cacheflush(uint32_t, uint32_t uint32_t);
int sys_arc_settls(void *);
int sys_arc_gettls(void);
int sys_arc_usr_cmpxchg(int *, int, int);
#include <asm-generic/syscalls.h>

9
arch/arc/include/uapi/asm/unistd.h
View file

@ -27,18 +27,19 @@
#define NR_syscalls __NR_syscalls
/* Generic syscall (fs/filesystems.c - lost in asm-generic/unistd.h */
#define __NR_sysfs (__NR_arch_specific_syscall + 3)
/* ARC specific syscall */
#define __NR_cacheflush (__NR_arch_specific_syscall + 0)
#define __NR_arc_settls (__NR_arch_specific_syscall + 1)
#define __NR_arc_gettls (__NR_arch_specific_syscall + 2)
#define __NR_arc_usr_cmpxchg (__NR_arch_specific_syscall + 4)
__SYSCALL(__NR_cacheflush, sys_cacheflush)
__SYSCALL(__NR_arc_settls, sys_arc_settls)
__SYSCALL(__NR_arc_gettls, sys_arc_gettls)
/* Generic syscall (fs/filesystems.c - lost in asm-generic/unistd.h */
#define __NR_sysfs (__NR_arch_specific_syscall + 3)
__SYSCALL(__NR_arc_usr_cmpxchg, sys_arc_usr_cmpxchg)
__SYSCALL(__NR_sysfs, sys_sysfs)
#undef __SYSCALL

31
arch/arc/kernel/mcip.c
View file

@ -15,11 +15,12 @@
#include <asm/mcip.h>
#include <asm/setup.h>
static char smp_cpuinfo_buf[128];
static int idu_detected;
static DEFINE_RAW_SPINLOCK(mcip_lock);
#ifdef CONFIG_SMP
static char smp_cpuinfo_buf[128];
static void mcip_setup_per_cpu(int cpu)
{
smp_ipi_irq_setup(cpu, IPI_IRQ);
@ -86,21 +87,7 @@ static void mcip_ipi_clear(int irq)
static void mcip_probe_n_setup(void)
{
struct mcip_bcr {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad3:8,
idu:1, llm:1, num_cores:6,
iocoh:1, gfrc:1, dbg:1, pad2:1,
msg:1, sem:1, ipi:1, pad:1,
ver:8;
#else
unsigned int ver:8,
pad:1, ipi:1, sem:1, msg:1,
pad2:1, dbg:1, gfrc:1, iocoh:1,
num_cores:6, llm:1, idu:1,
pad3:8;
#endif
} mp;
struct mcip_bcr mp;
READ_BCR(ARC_REG_MCIP_BCR, mp);
@ -114,7 +101,6 @@ static void mcip_probe_n_setup(void)
IS_AVAIL1(mp.gfrc, "GFRC"));
cpuinfo_arc700[0].extn.gfrc = mp.gfrc;
idu_detected = mp.idu;
if (mp.dbg) {
__mcip_cmd_data(CMD_DEBUG_SET_SELECT, 0, 0xf);
@ -130,6 +116,8 @@ struct plat_smp_ops plat_smp_ops = {
.ipi_clear = mcip_ipi_clear,
};
#endif
/***************************************************************************
* ARCv2 Interrupt Distribution Unit (IDU)
*
@ -295,8 +283,11 @@ idu_of_init(struct device_node *intc, struct device_node *parent)
/* Read IDU BCR to confirm nr_irqs */
int nr_irqs = of_irq_count(intc);
int i, irq;
struct mcip_bcr mp;
if (!idu_detected)
READ_BCR(ARC_REG_MCIP_BCR, mp);
if (!mp.idu)
panic("IDU not detected, but DeviceTree using it");
pr_info("MCIP: IDU referenced from Devicetree %d irqs\n", nr_irqs);

51
arch/arc/kernel/module.c
View file

@ -30,17 +30,9 @@ int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
char *secstr, struct module *mod)
{
#ifdef CONFIG_ARC_DW2_UNWIND
int i;
mod->arch.unw_sec_idx = 0;
mod->arch.unw_info = NULL;
for (i = 1; i < hdr->e_shnum; i++) {
if (strcmp(secstr+sechdrs[i].sh_name, ".eh_frame") == 0) {
mod->arch.unw_sec_idx = i;
break;
}
}
mod->arch.secstr = secstr;
#endif
return 0;
}
@ -59,29 +51,33 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
unsigned int relsec, /* sec index for relo sec */
struct module *module)
{
int i, n;
int i, n, relo_type;
Elf32_Rela *rel_entry = (void *)sechdrs[relsec].sh_addr;
Elf32_Sym *sym_entry, *sym_sec;
Elf32_Addr relocation;
Elf32_Addr location;
Elf32_Addr sec_to_patch;
int relo_type;
Elf32_Addr relocation, location, tgt_addr;
unsigned int tgtsec;
sec_to_patch = sechdrs[sechdrs[relsec].sh_info].sh_addr;
/*
* @relsec has relocations e.g. .rela.init.text
* @tgtsec is section to patch e.g. .init.text
*/
tgtsec = sechdrs[relsec].sh_info;
tgt_addr = sechdrs[tgtsec].sh_addr;
sym_sec = (Elf32_Sym *) sechdrs[symindex].sh_addr;
n = sechdrs[relsec].sh_size / sizeof(*rel_entry);
pr_debug("\n========== Module Sym reloc ===========================\n");
pr_debug("Section to fixup %x\n", sec_to_patch);
pr_debug("\nSection to fixup %s @%x\n",
module->arch.secstr + sechdrs[tgtsec].sh_name, tgt_addr);
pr_debug("=========================================================\n");
pr_debug("rela->r_off | rela->addend | sym->st_value | ADDR | VALUE\n");
pr_debug("r_off\tr_add\tst_value ADDRESS VALUE\n");
pr_debug("=========================================================\n");
/* Loop thru entries in relocation section */
for (i = 0; i < n; i++) {
const char *s;
/* This is where to make the change */
location = sec_to_patch + rel_entry[i].r_offset;
location = tgt_addr + rel_entry[i].r_offset;
/* This is the symbol it is referring to. Note that all
undefined symbols have been resolved. */
@ -89,10 +85,15 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
relocation = sym_entry->st_value + rel_entry[i].r_addend;
pr_debug("\t%x\t\t%x\t\t%x %x %x [%s]\n",
rel_entry[i].r_offset, rel_entry[i].r_addend,
sym_entry->st_value, location, relocation,
strtab + sym_entry->st_name);
if (sym_entry->st_name == 0 && ELF_ST_TYPE (sym_entry->st_info) == STT_SECTION) {
s = module->arch.secstr + sechdrs[sym_entry->st_shndx].sh_name;
} else {
s = strtab + sym_entry->st_name;
}
pr_debug(" %x\t%x\t%x %x %x [%s]\n",
rel_entry[i].r_offset, rel_entry[i].r_addend,
sym_entry->st_value, location, relocation, s);
/* This assumes modules are built with -mlong-calls
* so any branches/jumps are absolute 32 bit jmps
@ -111,6 +112,10 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
goto relo_err;
}
if (strcmp(module->arch.secstr+sechdrs[tgtsec].sh_name, ".eh_frame") == 0)
module->arch.unw_sec_idx = tgtsec;
return 0;
relo_err:

33
arch/arc/kernel/process.c
View file

@ -41,6 +41,39 @@ SYSCALL_DEFINE0(arc_gettls)
return task_thread_info(current)->thr_ptr;
}
SYSCALL_DEFINE3(arc_usr_cmpxchg, int *, uaddr, int, expected, int, new)
{
int uval;
int ret;
/*
* This is only for old cores lacking LLOCK/SCOND, which by defintion
* can't possibly be SMP. Thus doesn't need to be SMP safe.
* And this also helps reduce the overhead for serializing in
* the UP case
*/
WARN_ON_ONCE(IS_ENABLED(CONFIG_SMP));
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
return -EFAULT;
preempt_disable();
ret = __get_user(uval, uaddr);
if (ret)
goto done;
if (uval != expected)
ret = -EAGAIN;
else
ret = __put_user(new, uaddr);
done:
preempt_enable();
return ret;
}
void arch_cpu_idle(void)
{
/* sleep, but enable all interrupts before committing */

115
arch/arc/kernel/setup.c
View file

@ -40,6 +40,29 @@ struct task_struct *_current_task[NR_CPUS]; /* For stack switching */
struct cpuinfo_arc cpuinfo_arc700[NR_CPUS];
static const struct id_to_str arc_cpu_rel[] = {
#ifdef CONFIG_ISA_ARCOMPACT
{ 0x34, "R4.10"},
{ 0x35, "R4.11"},
#else
{ 0x51, "R2.0" },
{ 0x52, "R2.1" },
{ 0x53, "R3.0" },
#endif
{ 0x00, NULL }
};
static const struct id_to_str arc_cpu_nm[] = {
#ifdef CONFIG_ISA_ARCOMPACT
{ 0x20, "ARC 600" },
{ 0x30, "ARC 770" }, /* 750 identified seperately */
#else
{ 0x40, "ARC EM" },
{ 0x50, "ARC HS38" },
#endif
{ 0x00, "Unknown" }
};
static void read_decode_ccm_bcr(struct cpuinfo_arc *cpu)
{
if (is_isa_arcompact()) {
@ -92,11 +115,26 @@ static void read_arc_build_cfg_regs(void)
struct bcr_timer timer;
struct bcr_generic bcr;
struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()];
const struct id_to_str *tbl;
FIX_PTR(cpu);
READ_BCR(AUX_IDENTITY, cpu->core);
READ_BCR(ARC_REG_ISA_CFG_BCR, cpu->isa);
for (tbl = &arc_cpu_rel[0]; tbl->id != 0; tbl++) {
if (cpu->core.family == tbl->id) {
cpu->details = tbl->str;
break;
}
}
for (tbl = &arc_cpu_nm[0]; tbl->id != 0; tbl++) {
if ((cpu->core.family & 0xF0) == tbl->id)
break;
}
cpu->name = tbl->str;
READ_BCR(ARC_REG_TIMERS_BCR, timer);
cpu->extn.timer0 = timer.t0;
cpu->extn.timer1 = timer.t1;
@ -111,6 +149,9 @@ static void read_arc_build_cfg_regs(void)
cpu->extn.swap = read_aux_reg(ARC_REG_SWAP_BCR) ? 1 : 0; /* 1,3 */
cpu->extn.crc = read_aux_reg(ARC_REG_CRC_BCR) ? 1 : 0;
cpu->extn.minmax = read_aux_reg(ARC_REG_MIXMAX_BCR) > 1 ? 1 : 0; /* 2 */
cpu->extn.swape = (cpu->core.family >= 0x34) ? 1 :
IS_ENABLED(CONFIG_ARC_HAS_SWAPE);
READ_BCR(ARC_REG_XY_MEM_BCR, cpu->extn_xymem);
/* Read CCM BCRs for boot reporting even if not enabled in Kconfig */
@ -160,64 +201,38 @@ static void read_arc_build_cfg_regs(void)
cpu->extn.rtt = bcr.ver ? 1 : 0;
cpu->extn.debug = cpu->extn.ap | cpu->extn.smart | cpu->extn.rtt;
/* some hacks for lack of feature BCR info in old ARC700 cores */
if (is_isa_arcompact()) {
if (!cpu->isa.ver) /* ISA BCR absent, use Kconfig info */
cpu->isa.atomic = IS_ENABLED(CONFIG_ARC_HAS_LLSC);
else
cpu->isa.atomic = cpu->isa.atomic1;
cpu->isa.be = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN);
/* there's no direct way to distinguish 750 vs. 770 */
if (unlikely(cpu->core.family < 0x34 || cpu->mmu.ver < 3))
cpu->name = "ARC750";
}
}
static const struct cpuinfo_data arc_cpu_tbl[] = {
#ifdef CONFIG_ISA_ARCOMPACT
{ {0x20, "ARC 600" }, 0x2F},
{ {0x30, "ARC 700" }, 0x33},
{ {0x34, "ARC 700 R4.10"}, 0x34},
{ {0x35, "ARC 700 R4.11"}, 0x35},
#else
{ {0x50, "ARC HS38 R2.0"}, 0x51},
{ {0x52, "ARC HS38 R2.1"}, 0x52},
{ {0x53, "ARC HS38 R3.0"}, 0x53},
#endif
{ {0x00, NULL } }
};
static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
{
struct cpuinfo_arc *cpu = &cpuinfo_arc700[cpu_id];
struct bcr_identity *core = &cpu->core;
const struct cpuinfo_data *tbl;
char *isa_nm;
int i, be, atomic;
int n = 0;
int i, n = 0;
FIX_PTR(cpu);
if (is_isa_arcompact()) {
isa_nm = "ARCompact";
be = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN);
atomic = cpu->isa.atomic1;
if (!cpu->isa.ver) /* ISA BCR absent, use Kconfig info */
atomic = IS_ENABLED(CONFIG_ARC_HAS_LLSC);
} else {
isa_nm = "ARCv2";
be = cpu->isa.be;
atomic = cpu->isa.atomic;
}
n += scnprintf(buf + n, len - n,
"\nIDENTITY\t: ARCVER [%#02x] ARCNUM [%#02x] CHIPID [%#4x]\n",
core->family, core->cpu_id, core->chip_id);
for (tbl = &arc_cpu_tbl[0]; tbl->info.id != 0; tbl++) {
if ((core->family >= tbl->info.id) &&
(core->family <= tbl->up_range)) {
n += scnprintf(buf + n, len - n,
"processor [%d]\t: %s (%s ISA) %s\n",
cpu_id, tbl->info.str, isa_nm,
IS_AVAIL1(be, "[Big-Endian]"));
break;
}
}
if (tbl->info.id == 0)
n += scnprintf(buf + n, len - n, "UNKNOWN ARC Processor\n");
n += scnprintf(buf + n, len - n, "processor [%d]\t: %s %s (%s ISA) %s\n",
cpu_id, cpu->name, cpu->details,
is_isa_arcompact() ? "ARCompact" : "ARCv2",
IS_AVAIL1(cpu->isa.be, "[Big-Endian]"));
n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s\nISA Extn\t: ",
IS_AVAIL1(cpu->extn.timer0, "Timer0 "),
@ -226,7 +241,7 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
CONFIG_ARC_HAS_RTC));
n += i = scnprintf(buf + n, len - n, "%s%s%s%s%s",
IS_AVAIL2(atomic, "atomic ", CONFIG_ARC_HAS_LLSC),
IS_AVAIL2(cpu->isa.atomic, "atomic ", CONFIG_ARC_HAS_LLSC),
IS_AVAIL2(cpu->isa.ldd, "ll64 ", CONFIG_ARC_HAS_LL64),
IS_AVAIL1(cpu->isa.unalign, "unalign (not used)"));
@ -253,7 +268,7 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
IS_AVAIL1(cpu->extn.swap, "swap "),
IS_AVAIL1(cpu->extn.minmax, "minmax "),
IS_AVAIL1(cpu->extn.crc, "crc "),
IS_AVAIL2(1, "swape", CONFIG_ARC_HAS_SWAPE));
IS_AVAIL2(cpu->extn.swape, "swape", CONFIG_ARC_HAS_SWAPE));
if (cpu->bpu.ver)
n += scnprintf(buf + n, len - n,
@ -272,9 +287,7 @@ static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len)
FIX_PTR(cpu);
n += scnprintf(buf + n, len - n,
"Vector Table\t: %#x\nPeripherals\t: %#lx:%#lx\n",
cpu->vec_base, perip_base, perip_end);
n += scnprintf(buf + n, len - n, "Vector Table\t: %#x\n", cpu->vec_base);
if (cpu->extn.fpu_sp || cpu->extn.fpu_dp)
n += scnprintf(buf + n, len - n, "FPU\t\t: %s%s\n",
@ -507,7 +520,7 @@ static void *c_start(struct seq_file *m, loff_t *pos)
* way to pass it w/o having to kmalloc/free a 2 byte string.
* Encode cpu-id as 0xFFcccc, which is decoded by show routine.
*/
return *pos < num_possible_cpus() ? cpu_to_ptr(*pos) : NULL;
return *pos < nr_cpu_ids ? cpu_to_ptr(*pos) : NULL;
}
static void *c_next(struct seq_file *m, void *v, loff_t *pos)

110
arch/arc/kernel/troubleshoot.c
View file

@ -237,113 +237,3 @@ void show_kernel_fault_diag(const char *str, struct pt_regs *regs,
if (!user_mode(regs))
show_stacktrace(current, regs);
}
#ifdef CONFIG_DEBUG_FS
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/mount.h>
#include <linux/pagemap.h>
#include <linux/init.h>
#include <linux/namei.h>
#include <linux/debugfs.h>
static struct dentry *test_dentry;
static struct dentry *test_dir;
static struct dentry *test_u32_dentry;
static u32 clr_on_read = 1;
#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
u32 numitlb, numdtlb, num_pte_not_present;
static int fill_display_data(char *kbuf)
{
size_t num = 0;
num += sprintf(kbuf + num, "I-TLB Miss %x\n", numitlb);
num += sprintf(kbuf + num, "D-TLB Miss %x\n", numdtlb);
num += sprintf(kbuf + num, "PTE not present %x\n", num_pte_not_present);
if (clr_on_read)
numitlb = numdtlb = num_pte_not_present = 0;
return num;
}
static int tlb_stats_open(struct inode *inode, struct file *file)
{
file->private_data = (void *)__get_free_page(GFP_KERNEL);
return 0;
}
/* called on user read(): display the counters */
static ssize_t tlb_stats_output(struct file *file, /* file descriptor */
char __user *user_buf, /* user buffer */
size_t len, /* length of buffer */
loff_t *offset) /* offset in the file */
{
size_t num;
char *kbuf = (char *)file->private_data;
/* All of the data can he shoved in one iteration */
if (*offset != 0)
return 0;
num = fill_display_data(kbuf);
/* simple_read_from_buffer() is helper for copy to user space
It copies up to @2 (num) bytes from kernel buffer @4 (kbuf) at offset
@3 (offset) into the user space address starting at @1 (user_buf).
@5 (len) is max size of user buffer
*/
return simple_read_from_buffer(user_buf, num, offset, kbuf, len);
}
/* called on user write : clears the counters */
static ssize_t tlb_stats_clear(struct file *file, const char __user *user_buf,
size_t length, loff_t *offset)
{
numitlb = numdtlb = num_pte_not_present = 0;
return length;
}
static int tlb_stats_close(struct inode *inode, struct file *file)
{
free_page((unsigned long)(file->private_data));
return 0;
}
static const struct file_operations tlb_stats_file_ops = {
.read = tlb_stats_output,
.write = tlb_stats_clear,
.open = tlb_stats_open,
.release = tlb_stats_close
};
#endif
static int __init arc_debugfs_init(void)
{
test_dir = debugfs_create_dir("arc", NULL);
#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
test_dentry = debugfs_create_file("tlb_stats", 0444, test_dir, NULL,
&tlb_stats_file_ops);
#endif
test_u32_dentry =
debugfs_create_u32("clr_on_read", 0444, test_dir, &clr_on_read);
return 0;
}
module_init(arc_debugfs_init);
static void __exit arc_debugfs_exit(void)
{
debugfs_remove(test_u32_dentry);
debugfs_remove(test_dentry);
debugfs_remove(test_dir);
}
module_exit(arc_debugfs_exit);
#endif

19
arch/arc/mm/cache.c
View file

@ -22,8 +22,8 @@
#include <asm/setup.h>
static int l2_line_sz;
int ioc_exists;
volatile int slc_enable = 1, ioc_enable = 1;
static int ioc_exists;
int slc_enable = 1, ioc_enable = 1;
unsigned long perip_base = ARC_UNCACHED_ADDR_SPACE; /* legacy value for boot */
unsigned long perip_end = 0xFFFFFFFF; /* legacy value */
@ -53,18 +53,15 @@ char *arc_cache_mumbojumbo(int c, char *buf, int len)
PR_CACHE(&cpuinfo_arc700[c].icache, CONFIG_ARC_HAS_ICACHE, "I-Cache");
PR_CACHE(&cpuinfo_arc700[c].dcache, CONFIG_ARC_HAS_DCACHE, "D-Cache");
if (!is_isa_arcv2())
return buf;
p = &cpuinfo_arc700[c].slc;
if (p->ver)
n += scnprintf(buf + n, len - n,
"SLC\t\t: %uK, %uB Line%s\n",
p->sz_k, p->line_len, IS_USED_RUN(slc_enable));
if (ioc_exists)
n += scnprintf(buf + n, len - n, "IOC\t\t:%s\n",
IS_DISABLED_RUN(ioc_enable));
n += scnprintf(buf + n, len - n, "Peripherals\t: %#lx%s%s\n",
perip_base,
IS_AVAIL3(ioc_exists, ioc_enable, ", IO-Coherency "));
return buf;
}
@ -113,8 +110,10 @@ static void read_decode_cache_bcr_arcv2(int cpu)
}
READ_BCR(ARC_REG_CLUSTER_BCR, cbcr);
if (cbcr.c && ioc_enable)
if (cbcr.c)
ioc_exists = 1;
else
ioc_enable = 0;
/* HS 2.0 didn't have AUX_VOL */
if (cpuinfo_arc700[cpu].core.family > 0x51) {
@ -1002,7 +1001,7 @@ void arc_cache_init(void)
read_aux_reg(ARC_REG_SLC_CTRL) | SLC_CTRL_DISABLE);
}
if (is_isa_arcv2() && ioc_exists) {
if (is_isa_arcv2() && ioc_enable) {
/* IO coherency base - 0x8z */
write_aux_reg(ARC_REG_IO_COH_AP0_BASE, 0x80000);
/* IO coherency aperture size - 512Mb: 0x8z-0xAz */

4
arch/arc/mm/dma.c
View file

@ -45,7 +45,7 @@ static void *arc_dma_alloc(struct device *dev, size_t size,
* -For coherent data, Read/Write to buffers terminate early in cache
* (vs. always going to memory - thus are faster)
*/
if ((is_isa_arcv2() && ioc_exists) ||
if ((is_isa_arcv2() && ioc_enable) ||
(attrs & DMA_ATTR_NON_CONSISTENT))
need_coh = 0;
@ -97,7 +97,7 @@ static void arc_dma_free(struct device *dev, size_t size, void *vaddr,
int is_non_coh = 1;
is_non_coh = (attrs & DMA_ATTR_NON_CONSISTENT) ||
(is_isa_arcv2() && ioc_exists);
(is_isa_arcv2() && ioc_enable);
if (PageHighMem(page) || !is_non_coh)
iounmap((void __force __iomem *)vaddr);

6
arch/arc/mm/tlb.c
View file

@ -793,16 +793,16 @@ char *arc_mmu_mumbojumbo(int cpu_id, char *buf, int len)
char super_pg[64] = "";
if (p_mmu->s_pg_sz_m)
scnprintf(super_pg, 64, "%dM Super Page%s, ",
scnprintf(super_pg, 64, "%dM Super Page %s",
p_mmu->s_pg_sz_m,
IS_USED_CFG(CONFIG_TRANSPARENT_HUGEPAGE));
n += scnprintf(buf + n, len - n,
"MMU [v%x]\t: %dk PAGE, %sJTLB %d (%dx%d), uDTLB %d, uITLB %d %s%s\n",
"MMU [v%x]\t: %dk PAGE, %sJTLB %d (%dx%d), uDTLB %d, uITLB %d%s%s\n",
p_mmu->ver, p_mmu->pg_sz_k, super_pg,
p_mmu->sets * p_mmu->ways, p_mmu->sets, p_mmu->ways,
p_mmu->u_dtlb, p_mmu->u_itlb,
IS_AVAIL2(p_mmu->pae, "PAE40 ", CONFIG_ARC_HAS_PAE40));
IS_AVAIL2(p_mmu->pae, ", PAE40 ", CONFIG_ARC_HAS_PAE40));
return buf;
}

21
arch/arc/mm/tlbex.S
View file

@ -237,15 +237,6 @@ ex_saved_reg1:
2:
#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
and.f 0, r0, _PAGE_PRESENT
bz 1f
ld r3, [num_pte_not_present]
add r3, r3, 1
st r3, [num_pte_not_present]
1:
#endif
.endm
;-----------------------------------------------------------------
@ -309,12 +300,6 @@ ENTRY(EV_TLBMissI)
TLBMISS_FREEUP_REGS
#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
ld r0, [@numitlb]
add r0, r0, 1
st r0, [@numitlb]
#endif
;----------------------------------------------------------------
; Get the PTE corresponding to V-addr accessed, r2 is setup with EFA
LOAD_FAULT_PTE
@ -349,12 +334,6 @@ ENTRY(EV_TLBMissD)
TLBMISS_FREEUP_REGS
#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
ld r0, [@numdtlb]
add r0, r0, 1
st r0, [@numdtlb]
#endif
;----------------------------------------------------------------
; Get the PTE corresponding to V-addr accessed
; If PTE exists, it will setup, r0 = PTE, r1 = Ptr to PTE, r2 = EFA

15
arch/arm/boot/dts/ste-snowball.dts
View file

@ -239,14 +239,25 @@ sdi0_per1@80126000 {
arm,primecell-periphid = <0x10480180>;
max-frequency = <100000000>;
bus-width = <4>;
cap-sd-highspeed;
cap-mmc-highspeed;
sd-uhs-sdr12;
sd-uhs-sdr25;
/* All direction control is used */
st,sig-dir-cmd;
st,sig-dir-dat0;
st,sig-dir-dat2;
st,sig-dir-dat31;
st,sig-pin-fbclk;
full-pwr-cycle;
vmmc-supply = <&ab8500_ldo_aux3_reg>;
vqmmc-supply = <&vmmci>;
pinctrl-names = "default", "sleep";
pinctrl-0 = <&sdi0_default_mode>;
pinctrl-1 = <&sdi0_sleep_mode>;
cd-gpios = <&gpio6 26 GPIO_ACTIVE_LOW>; // 218
/* GPIO218 MMC_CD */
cd-gpios = <&gpio6 26 GPIO_ACTIVE_LOW>;
status = "okay";
};
@ -549,7 +560,7 @@ snowball_cfg2 {
/* VMMCI level-shifter enable */
snowball_cfg3 {
pins = "GPIO217_AH12";
ste,config = <&gpio_out_lo>;
ste,config = <&gpio_out_hi>;
};
/* VMMCI level-shifter voltage select */
snowball_cfg4 {

4
arch/arm/boot/dts/uniphier-pro5.dtsi
View file

@ -184,11 +184,11 @@ &refclk {
};
&mio_clk {
compatible = "socionext,uniphier-pro5-mio-clock";
compatible = "socionext,uniphier-pro5-sd-clock";
};
&mio_rst {
compatible = "socionext,uniphier-pro5-mio-reset";
compatible = "socionext,uniphier-pro5-sd-reset";
};
&peri_clk {

4
arch/arm/boot/dts/uniphier-pxs2.dtsi
View file

@ -197,11 +197,11 @@ &refclk {
};
&mio_clk {
compatible = "socionext,uniphier-pxs2-mio-clock";
compatible = "socionext,uniphier-pxs2-sd-clock";
};
&mio_rst {
compatible = "socionext,uniphier-pxs2-mio-reset";
compatible = "socionext,uniphier-pxs2-sd-reset";
};
&peri_clk {

2
arch/arm/boot/dts/vf500.dtsi
View file

@ -70,7 +70,7 @@ intc: interrupt-controller@40002000 {
global_timer: timer@40002200 {
compatible = "arm,cortex-a9-global-timer";
reg = <0x40002200 0x20>;
interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
interrupts = <GIC_PPI 11 IRQ_TYPE_EDGE_RISING>;
interrupt-parent = <&intc>;
clocks = <&clks VF610_CLK_PLATFORM_BUS>;
};

1
arch/arm/configs/multi_v7_defconfig
View file

@ -850,6 +850,7 @@ CONFIG_PWM_SUN4I=y
CONFIG_PWM_TEGRA=y
CONFIG_PWM_VT8500=y
CONFIG_PHY_HIX5HD2_SATA=y
CONFIG_E1000E=y
CONFIG_PWM_STI=y
CONFIG_PWM_BCM2835=y
CONFIG_PWM_BRCMSTB=m

2
arch/arm/include/asm/unistd.h
View file

@ -19,7 +19,7 @@
* This may need to be greater than __NR_last_syscall+1 in order to
* account for the padding in the syscall table
*/
#define __NR_syscalls (396)
#define __NR_syscalls (400)
#define __ARCH_WANT_STAT64
#define __ARCH_WANT_SYS_GETHOSTNAME

3
arch/arm/include/uapi/asm/unistd.h
View file

@ -420,6 +420,9 @@
#define __NR_copy_file_range (__NR_SYSCALL_BASE+391)
#define __NR_preadv2 (__NR_SYSCALL_BASE+392)
#define __NR_pwritev2 (__NR_SYSCALL_BASE+393)
#define __NR_pkey_mprotect (__NR_SYSCALL_BASE+394)
#define __NR_pkey_alloc (__NR_SYSCALL_BASE+395)
#define __NR_pkey_free (__NR_SYSCALL_BASE+396)
/*
* The following SWIs are ARM private.

3
arch/arm/kernel/calls.S
View file

@ -403,6 +403,9 @@
CALL(sys_copy_file_range)
CALL(sys_preadv2)
CALL(sys_pwritev2)
CALL(sys_pkey_mprotect)
/* 395 */ CALL(sys_pkey_alloc)
CALL(sys_pkey_free)
#ifndef syscalls_counted
.equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
#define syscalls_counted

7
arch/arm/kvm/arm.c
View file

@ -1312,6 +1312,13 @@ static int init_hyp_mode(void)
goto out_err;
}
err = create_hyp_mappings(kvm_ksym_ref(__bss_start),
kvm_ksym_ref(__bss_stop), PAGE_HYP_RO);
if (err) {
kvm_err("Cannot map bss section\n");
goto out_err;
}
/*
* Map the Hyp stack pages
*/

17
arch/arm/mach-imx/gpc.c
View file

@ -408,7 +408,7 @@ static struct genpd_onecell_data imx_gpc_onecell_data = {
static int imx_gpc_genpd_init(struct device *dev, struct regulator *pu_reg)
{
struct clk *clk;
int i;
int i, ret;
imx6q_pu_domain.reg = pu_reg;
@ -430,13 +430,22 @@ static int imx_gpc_genpd_init(struct device *dev, struct regulator *pu_reg)
if (!IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS))
return 0;
pm_genpd_init(&imx6q_pu_domain.base, NULL, false);
return of_genpd_add_provider_onecell(dev->of_node,
&imx_gpc_onecell_data);
for (i = 0; i < ARRAY_SIZE(imx_gpc_domains); i++)
pm_genpd_init(imx_gpc_domains[i], NULL, false);
ret = of_genpd_add_provider_onecell(dev->of_node,
&imx_gpc_onecell_data);
if (ret)
goto power_off;
return 0;
power_off:
imx6q_pm_pu_power_off(&imx6q_pu_domain.base);
clk_err:
while (i--)
clk_put(imx6q_pu_domain.clk[i]);
imx6q_pu_domain.reg = NULL;
return -EINVAL;
}

2
arch/arm/mach-imx/mach-imx6q.c
View file

@ -173,7 +173,7 @@ static void __init imx6q_enet_phy_init(void)
ksz9021rn_phy_fixup);
phy_register_fixup_for_uid(PHY_ID_KSZ9031, MICREL_PHY_ID_MASK,
ksz9031rn_phy_fixup);
phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff,
phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffef,
ar8031_phy_fixup);
phy_register_fixup_for_uid(PHY_ID_AR8035, 0xffffffef,
ar8035_phy_fixup);

4
arch/arm/mach-mvebu/Kconfig
View file

@ -23,6 +23,7 @@ config MACH_MVEBU_V7
select CACHE_L2X0
select ARM_CPU_SUSPEND
select MACH_MVEBU_ANY
select MVEBU_CLK_COREDIV
config MACH_ARMADA_370
bool "Marvell Armada 370 boards"
@ -32,7 +33,6 @@ config MACH_ARMADA_370
select CPU_PJ4B
select MACH_MVEBU_V7
select PINCTRL_ARMADA_370
select MVEBU_CLK_COREDIV
help
Say 'Y' here if you want your kernel to support boards based
on the Marvell Armada 370 SoC with device tree.
@ -50,7 +50,6 @@ config MACH_ARMADA_375
select HAVE_SMP
select MACH_MVEBU_V7
select PINCTRL_ARMADA_375
select MVEBU_CLK_COREDIV
help
Say 'Y' here if you want your kernel to support boards based
on the Marvell Armada 375 SoC with device tree.
@ -68,7 +67,6 @@ config MACH_ARMADA_38X
select HAVE_SMP
select MACH_MVEBU_V7
select PINCTRL_ARMADA_38X
select MVEBU_CLK_COREDIV
help
Say 'Y' here if you want your kernel to support boards based
on the Marvell Armada 380/385 SoC with device tree.

1
arch/arm/mach-uniphier/Kconfig
View file

@ -1,6 +1,7 @@
config ARCH_UNIPHIER
bool "Socionext UniPhier SoCs"
depends on ARCH_MULTI_V7
select ARCH_HAS_RESET_CONTROLLER
select ARM_AMBA
select ARM_GLOBAL_TIMER
select ARM_GIC

34
arch/arm/mm/abort-lv4t.S
View file

@ -7,7 +7,7 @@
* : r4 = aborted context pc
* : r5 = aborted context psr
*
* Returns : r4-r5, r10-r11, r13 preserved
* Returns : r4-r5, r9-r11, r13 preserved
*
* Purpose : obtain information about current aborted instruction.
* Note: we read user space. This means we might cause a data
@ -48,7 +48,10 @@ ENTRY(v4t_late_abort)
/* c */ b do_DataAbort @ ldc rd, [rn], #m @ Same as ldr rd, [rn], #m
/* d */ b do_DataAbort @ ldc rd, [rn, #m]
/* e */ b .data_unknown
/* f */
/* f */ b .data_unknown
.data_unknown_r9:
ldr r9, [sp], #4
.data_unknown: @ Part of jumptable
mov r0, r4
mov r1, r8
@ -57,6 +60,7 @@ ENTRY(v4t_late_abort)
.data_arm_ldmstm:
tst r8, #1 << 21 @ check writeback bit
beq do_DataAbort @ no writeback -> no fixup
str r9, [sp, #-4]!
mov r7, #0x11
orr r7, r7, #0x1100
and r6, r8, r7
@ -75,12 +79,14 @@ ENTRY(v4t_late_abort)
subne r7, r7, r6, lsl #2 @ Undo increment
addeq r7, r7, r6, lsl #2 @ Undo decrement
str r7, [r2, r9, lsr #14] @ Put register 'Rn'
ldr r9, [sp], #4
b do_DataAbort
.data_arm_lateldrhpre:
tst r8, #1 << 21 @ Check writeback bit
beq do_DataAbort @ No writeback -> no fixup
.data_arm_lateldrhpost:
str r9, [sp, #-4]!
and r9, r8, #0x00f @ get Rm / low nibble of immediate value
tst r8, #1 << 22 @ if (immediate offset)
andne r6, r8, #0xf00 @ { immediate high nibble
@ -93,6 +99,7 @@ ENTRY(v4t_late_abort)
subne r7, r7, r6 @ Undo incrmenet
addeq r7, r7, r6 @ Undo decrement
str r7, [r2, r9, lsr #14] @ Put register 'Rn'
ldr r9, [sp], #4
b do_DataAbort
.data_arm_lateldrpreconst:
@ -101,12 +108,14 @@ ENTRY(v4t_late_abort)
.data_arm_lateldrpostconst:
movs r6, r8, lsl #20 @ Get offset
beq do_DataAbort @ zero -> no fixup
str r9, [sp, #-4]!
and r9, r8, #15 << 16 @ Extract 'n' from instruction
ldr r7, [r2, r9, lsr #14] @ Get register 'Rn'
tst r8, #1 << 23 @ Check U bit
subne r7, r7, r6, lsr #20 @ Undo increment
addeq r7, r7, r6, lsr #20 @ Undo decrement
str r7, [r2, r9, lsr #14] @ Put register 'Rn'
ldr r9, [sp], #4
b do_DataAbort
.data_arm_lateldrprereg:
@ -115,6 +124,7 @@ ENTRY(v4t_late_abort)
.data_arm_lateldrpostreg:
and r7, r8, #15 @ Extract 'm' from instruction
ldr r6, [r2, r7, lsl #2] @ Get register 'Rm'
str r9, [sp, #-4]!
mov r9, r8, lsr #7 @ get shift count
ands r9, r9, #31
and r7, r8, #0x70 @ get shift type
@ -126,33 +136,33 @@ ENTRY(v4t_late_abort)
b .data_arm_apply_r6_and_rn
b .data_arm_apply_r6_and_rn @ 1: LSL #0
nop
b .data_unknown @ 2: MUL?
b .data_unknown_r9 @ 2: MUL?
nop
b .data_unknown @ 3: MUL?
b .data_unknown_r9 @ 3: MUL?
nop
mov r6, r6, lsr r9 @ 4: LSR #!0
b .data_arm_apply_r6_and_rn
mov r6, r6, lsr #32 @ 5: LSR #32
b .data_arm_apply_r6_and_rn
b .data_unknown @ 6: MUL?
b .data_unknown_r9 @ 6: MUL?
nop
b .data_unknown @ 7: MUL?
b .data_unknown_r9 @ 7: MUL?
nop
mov r6, r6, asr r9 @ 8: ASR #!0
b .data_arm_apply_r6_and_rn
mov r6, r6, asr #32 @ 9: ASR #32
b .data_arm_apply_r6_and_rn
b .data_unknown @ A: MUL?
b .data_unknown_r9 @ A: MUL?
nop
b .data_unknown @ B: MUL?
b .data_unknown_r9 @ B: MUL?
nop
mov r6, r6, ror r9 @ C: ROR #!0
b .data_arm_apply_r6_and_rn
mov r6, r6, rrx @ D: RRX
b .data_arm_apply_r6_and_rn
b .data_unknown @ E: MUL?
b .data_unknown_r9 @ E: MUL?
nop
b .data_unknown @ F: MUL?
b .data_unknown_r9 @ F: MUL?
.data_thumb_abort:
ldrh r8, [r4] @ read instruction
@ -190,6 +200,7 @@ ENTRY(v4t_late_abort)
.data_thumb_pushpop:
tst r8, #1 << 10
beq .data_unknown
str r9, [sp, #-4]!
and r6, r8, #0x55 @ hweight8(r8) + R bit
and r9, r8, #0xaa
add r6, r6, r9, lsr #1
@ -204,9 +215,11 @@ ENTRY(v4t_late_abort)
addeq r7, r7, r6, lsl #2 @ increment SP if PUSH
subne r7, r7, r6, lsl #2 @ decrement SP if POP
str r7, [r2, #13 << 2]
ldr r9, [sp], #4
b do_DataAbort
.data_thumb_ldmstm:
str r9, [sp, #-4]!
and r6, r8, #0x55 @ hweight8(r8)
and r9, r8, #0xaa
add r6, r6, r9, lsr #1
@ -219,4 +232,5 @@ ENTRY(v4t_late_abort)
and r6, r6, #15 @ number of regs to transfer
sub r7, r7, r6, lsl #2 @ always decrement
str r7, [r2, r9, lsr #6]
ldr r9, [sp], #4
b do_DataAbort

2
arch/arm64/Kconfig
View file

@ -915,7 +915,7 @@ config RANDOMIZE_BASE
config RANDOMIZE_MODULE_REGION_FULL
bool "Randomize the module region independently from the core kernel"
depends on RANDOMIZE_BASE
depends on RANDOMIZE_BASE && !DYNAMIC_FTRACE
default y
help
Randomizes the location of the module region without considering the

1
arch/arm64/Kconfig.platforms
View file

@ -190,6 +190,7 @@ config ARCH_THUNDER
config ARCH_UNIPHIER
bool "Socionext UniPhier SoC Family"
select ARCH_HAS_RESET_CONTROLLER
select PINCTRL
help
This enables support for Socionext UniPhier SoC family.

2
arch/arm64/Makefile
View file

@ -15,7 +15,7 @@ CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET)
GZFLAGS :=-9
ifneq ($(CONFIG_RELOCATABLE),)
LDFLAGS_vmlinux += -pie -Bsymbolic
LDFLAGS_vmlinux += -pie -shared -Bsymbolic
endif
ifeq ($(CONFIG_ARM64_ERRATUM_843419),y)

2
arch/arm64/boot/dts/broadcom/ns2-svk.dts
View file

@ -164,6 +164,8 @@ nandcs@0 {
nand-ecc-mode = "hw";
nand-ecc-strength = <8>;
nand-ecc-step-size = <512>;
nand-bus-width = <16>;
brcm,nand-oob-sector-size = <16>;
#address-cells = <1>;
#size-cells = <1>;
};

1
arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi
View file

@ -123,6 +123,7 @@ timer {
<1 14 0xf08>, /* Physical Non-Secure PPI */
<1 11 0xf08>, /* Virtual PPI */
<1 10 0xf08>; /* Hypervisor PPI */
fsl,erratum-a008585;
};
pmu {

1
arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi
View file

@ -195,6 +195,7 @@ timer {
<1 14 4>, /* Physical Non-Secure PPI, active-low */
<1 11 4>, /* Virtual PPI, active-low */
<1 10 4>; /* Hypervisor PPI, active-low */
fsl,erratum-a008585;
};
pmu {

2
arch/arm64/boot/dts/marvell/armada-cp110-master.dtsi
View file

@ -131,7 +131,7 @@ cpm_spi0: spi@700600 {
#address-cells = <0x1>;
#size-cells = <0x0>;
cell-index = <1>;
clocks = <&cpm_syscon0 0 3>;
clocks = <&cpm_syscon0 1 21>;
status = "disabled";
};

3
arch/arm64/boot/dts/rockchip/rk3368-geekbox.dts
View file

@ -116,7 +116,6 @@ &emmc {
cap-mmc-highspeed;
clock-frequency = <150000000>;
disable-wp;
keep-power-in-suspend;
non-removable;
num-slots = <1>;
vmmc-supply = <&vcc_io>;
@ -258,8 +257,6 @@ vcc18_lcd: LDO_REG8 {
};
vcc_sd: SWITCH_REG1 {
regulator-always-on;
regulator-boot-on;
regulator-name = "vcc_sd";
};

4
arch/arm64/boot/dts/rockchip/rk3368-orion-r68-meta.dts
View file

@ -152,8 +152,6 @@ vcc_sd: vcc-sd-regulator {
gpio = <&gpio3 11 GPIO_ACTIVE_LOW>;
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
regulator-boot-on;
vin-supply = <&vcc_io>;
};
@ -201,7 +199,6 @@ &emmc {
bus-width = <8>;
cap-mmc-highspeed;
disable-wp;
keep-power-in-suspend;
mmc-pwrseq = <&emmc_pwrseq>;
mmc-hs200-1_2v;
mmc-hs200-1_8v;
@ -350,7 +347,6 @@ &sdmmc {
clock-freq-min-max = <400000 50000000>;
cap-sd-highspeed;
card-detect-delay = <200>;
keep-power-in-suspend;
num-slots = <1>;
pinctrl-names = "default";
pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_bus4>;

12
arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
View file

@ -257,18 +257,18 @@ smpctrl@59800000 {
reg = <0x59801000 0x400>;
};
mioctrl@59810000 {
compatible = "socionext,uniphier-mioctrl",
sdctrl@59810000 {
compatible = "socionext,uniphier-ld20-sdctrl",
"simple-mfd", "syscon";
reg = <0x59810000 0x800>;
mio_clk: clock {
compatible = "socionext,uniphier-ld20-mio-clock";
sd_clk: clock {
compatible = "socionext,uniphier-ld20-sd-clock";
#clock-cells = <1>;
};
mio_rst: reset {
compatible = "socionext,uniphier-ld20-mio-reset";
sd_rst: reset {
compatible = "socionext,uniphier-ld20-sd-reset";
#reset-cells = <1>;
};
};

2
arch/arm64/include/asm/alternative.h
View file

@ -1,7 +1,7 @@
#ifndef __ASM_ALTERNATIVE_H
#define __ASM_ALTERNATIVE_H
#include <asm/cpufeature.h>
#include <asm/cpucaps.h>
#include <asm/insn.h>
#ifndef __ASSEMBLY__

40
arch/arm64/include/asm/cpucaps.h Normal file
View file

@ -0,0 +1,40 @@
/*
* arch/arm64/include/asm/cpucaps.h
*
* Copyright (C) 2016 ARM Ltd.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ASM_CPUCAPS_H
#define __ASM_CPUCAPS_H
#define ARM64_WORKAROUND_CLEAN_CACHE 0
#define ARM64_WORKAROUND_DEVICE_LOAD_ACQUIRE 1
#define ARM64_WORKAROUND_845719 2
#define ARM64_HAS_SYSREG_GIC_CPUIF 3
#define ARM64_HAS_PAN 4
#define ARM64_HAS_LSE_ATOMICS 5
#define ARM64_WORKAROUND_CAVIUM_23154 6
#define ARM64_WORKAROUND_834220 7
#define ARM64_HAS_NO_HW_PREFETCH 8
#define ARM64_HAS_UAO 9
#define ARM64_ALT_PAN_NOT_UAO 10
#define ARM64_HAS_VIRT_HOST_EXTN 11
#define ARM64_WORKAROUND_CAVIUM_27456 12
#define ARM64_HAS_32BIT_EL0 13
#define ARM64_HYP_OFFSET_LOW 14
#define ARM64_MISMATCHED_CACHE_LINE_SIZE 15
#define ARM64_NCAPS 16
#endif /* __ASM_CPUCAPS_H */

22
arch/arm64/include/asm/cpufeature.h
View file

@ -11,6 +11,7 @@
#include <linux/jump_label.h>
#include <asm/cpucaps.h>
#include <asm/hwcap.h>
#include <asm/sysreg.h>
@ -24,25 +25,6 @@
#define MAX_CPU_FEATURES (8 * sizeof(elf_hwcap))
#define cpu_feature(x) ilog2(HWCAP_ ## x)
#define ARM64_WORKAROUND_CLEAN_CACHE 0
#define ARM64_WORKAROUND_DEVICE_LOAD_ACQUIRE 1
#define ARM64_WORKAROUND_845719 2
#define ARM64_HAS_SYSREG_GIC_CPUIF 3
#define ARM64_HAS_PAN 4
#define ARM64_HAS_LSE_ATOMICS 5
#define ARM64_WORKAROUND_CAVIUM_23154 6
#define ARM64_WORKAROUND_834220 7
#define ARM64_HAS_NO_HW_PREFETCH 8
#define ARM64_HAS_UAO 9
#define ARM64_ALT_PAN_NOT_UAO 10
#define ARM64_HAS_VIRT_HOST_EXTN 11
#define ARM64_WORKAROUND_CAVIUM_27456 12
#define ARM64_HAS_32BIT_EL0 13
#define ARM64_HYP_OFFSET_LOW 14
#define ARM64_MISMATCHED_CACHE_LINE_SIZE 15
#define ARM64_NCAPS 16
#ifndef __ASSEMBLY__
#include <linux/kernel.h>
@ -94,7 +76,7 @@ struct arm64_cpu_capabilities {
u16 capability;
int def_scope; /* default scope */
bool (*matches)(const struct arm64_cpu_capabilities *caps, int scope);
void (*enable)(void *); /* Called on all active CPUs */
int (*enable)(void *); /* Called on all active CPUs */
union {
struct { /* To be used for erratum handling only */
u32 midr_model;

3
arch/arm64/include/asm/exec.h
View file

@ -18,6 +18,9 @@
#ifndef __ASM_EXEC_H
#define __ASM_EXEC_H
#include <linux/sched.h>
extern unsigned long arch_align_stack(unsigned long sp);
void uao_thread_switch(struct task_struct *next);
#endif /* __ASM_EXEC_H */

11
arch/arm64/include/asm/kvm_emulate.h
View file

@ -178,11 +178,6 @@ static inline bool kvm_vcpu_dabt_isvalid(const struct kvm_vcpu *vcpu)
return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_ISV);
}
static inline bool kvm_vcpu_dabt_iswrite(const struct kvm_vcpu *vcpu)
{
return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_WNR);
}
static inline bool kvm_vcpu_dabt_issext(const struct kvm_vcpu *vcpu)
{
return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_SSE);
@ -203,6 +198,12 @@ static inline bool kvm_vcpu_dabt_iss1tw(const struct kvm_vcpu *vcpu)
return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_S1PTW);
}
static inline bool kvm_vcpu_dabt_iswrite(const struct kvm_vcpu *vcpu)
{
return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_WNR) ||
kvm_vcpu_dabt_iss1tw(vcpu); /* AF/DBM update */
}
static inline bool kvm_vcpu_dabt_is_cm(const struct kvm_vcpu *vcpu)
{
return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_CM);

1
arch/arm64/include/asm/lse.h
View file

@ -5,7 +5,6 @@
#include <linux/stringify.h>
#include <asm/alternative.h>
#include <asm/cpufeature.h>
#ifdef __ASSEMBLER__

2
arch/arm64/include/asm/memory.h
View file

@ -217,7 +217,7 @@ static inline void *phys_to_virt(phys_addr_t x)
#define _virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#else
#define __virt_to_pgoff(kaddr) (((u64)(kaddr) & ~PAGE_OFFSET) / PAGE_SIZE * sizeof(struct page))
#define __page_to_voff(kaddr) (((u64)(page) & ~VMEMMAP_START) * PAGE_SIZE / sizeof(struct page))
#define __page_to_voff(page) (((u64)(page) & ~VMEMMAP_START) * PAGE_SIZE / sizeof(struct page))
#define page_to_virt(page) ((void *)((__page_to_voff(page)) | PAGE_OFFSET))
#define virt_to_page(vaddr) ((struct page *)((__virt_to_pgoff(vaddr)) | VMEMMAP_START))

5
arch/arm64/include/asm/module.h
View file

@ -17,6 +17,7 @@
#define __ASM_MODULE_H
#include <asm-generic/module.h>
#include <asm/memory.h>
#define MODULE_ARCH_VERMAGIC "aarch64"
@ -32,6 +33,10 @@ u64 module_emit_plt_entry(struct module *mod, const Elf64_Rela *rela,
Elf64_Sym *sym);
#ifdef CONFIG_RANDOMIZE_BASE
#ifdef CONFIG_MODVERSIONS
#define ARCH_RELOCATES_KCRCTAB
#define reloc_start (kimage_vaddr - KIMAGE_VADDR)
#endif
extern u64 module_alloc_base;
#else
#define module_alloc_base ((u64)_etext - MODULES_VSIZE)

120
arch/arm64/include/asm/percpu.h
View file

@ -44,48 +44,44 @@ static inline unsigned long __percpu_##op(void *ptr, \
\
switch (size) { \
case 1: \
do { \
asm ("//__per_cpu_" #op "_1\n" \
"ldxrb %w[ret], %[ptr]\n" \
asm ("//__per_cpu_" #op "_1\n" \
"1: ldxrb %w[ret], %[ptr]\n" \
#asm_op " %w[ret], %w[ret], %w[val]\n" \
"stxrb %w[loop], %w[ret], %[ptr]\n" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u8 *)ptr) \
: [val] "Ir" (val)); \
} while (loop); \
" stxrb %w[loop], %w[ret], %[ptr]\n" \
" cbnz %w[loop], 1b" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u8 *)ptr) \
: [val] "Ir" (val)); \
break; \
case 2: \
do { \
asm ("//__per_cpu_" #op "_2\n" \
"ldxrh %w[ret], %[ptr]\n" \
asm ("//__per_cpu_" #op "_2\n" \
"1: ldxrh %w[ret], %[ptr]\n" \
#asm_op " %w[ret], %w[ret], %w[val]\n" \
"stxrh %w[loop], %w[ret], %[ptr]\n" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u16 *)ptr) \
: [val] "Ir" (val)); \
} while (loop); \
" stxrh %w[loop], %w[ret], %[ptr]\n" \
" cbnz %w[loop], 1b" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u16 *)ptr) \
: [val] "Ir" (val)); \
break; \
case 4: \
do { \
asm ("//__per_cpu_" #op "_4\n" \
"ldxr %w[ret], %[ptr]\n" \
asm ("//__per_cpu_" #op "_4\n" \
"1: ldxr %w[ret], %[ptr]\n" \
#asm_op " %w[ret], %w[ret], %w[val]\n" \
"stxr %w[loop], %w[ret], %[ptr]\n" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u32 *)ptr) \
: [val] "Ir" (val)); \
} while (loop); \
" stxr %w[loop], %w[ret], %[ptr]\n" \
" cbnz %w[loop], 1b" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u32 *)ptr) \
: [val] "Ir" (val)); \
break; \
case 8: \
do { \
asm ("//__per_cpu_" #op "_8\n" \
"ldxr %[ret], %[ptr]\n" \
asm ("//__per_cpu_" #op "_8\n" \
"1: ldxr %[ret], %[ptr]\n" \
#asm_op " %[ret], %[ret], %[val]\n" \
"stxr %w[loop], %[ret], %[ptr]\n" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u64 *)ptr) \
: [val] "Ir" (val)); \
} while (loop); \
" stxr %w[loop], %[ret], %[ptr]\n" \
" cbnz %w[loop], 1b" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u64 *)ptr) \
: [val] "Ir" (val)); \
break; \
default: \
BUILD_BUG(); \
@ -150,44 +146,40 @@ static inline unsigned long __percpu_xchg(void *ptr, unsigned long val,
switch (size) {
case 1:
do {
asm ("//__percpu_xchg_1\n"
"ldxrb %w[ret], %[ptr]\n"
"stxrb %w[loop], %w[val], %[ptr]\n"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u8 *)ptr)
: [val] "r" (val));
} while (loop);
asm ("//__percpu_xchg_1\n"
"1: ldxrb %w[ret], %[ptr]\n"
" stxrb %w[loop], %w[val], %[ptr]\n"
" cbnz %w[loop], 1b"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u8 *)ptr)
: [val] "r" (val));
break;
case 2:
do {
asm ("//__percpu_xchg_2\n"
"ldxrh %w[ret], %[ptr]\n"
"stxrh %w[loop], %w[val], %[ptr]\n"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u16 *)ptr)
: [val] "r" (val));
} while (loop);
asm ("//__percpu_xchg_2\n"
"1: ldxrh %w[ret], %[ptr]\n"
" stxrh %w[loop], %w[val], %[ptr]\n"
" cbnz %w[loop], 1b"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u16 *)ptr)
: [val] "r" (val));
break;
case 4:
do {
asm ("//__percpu_xchg_4\n"
"ldxr %w[ret], %[ptr]\n"
"stxr %w[loop], %w[val], %[ptr]\n"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u32 *)ptr)
: [val] "r" (val));
} while (loop);
asm ("//__percpu_xchg_4\n"
"1: ldxr %w[ret], %[ptr]\n"
" stxr %w[loop], %w[val], %[ptr]\n"
" cbnz %w[loop], 1b"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u32 *)ptr)
: [val] "r" (val));
break;
case 8:
do {
asm ("//__percpu_xchg_8\n"
"ldxr %[ret], %[ptr]\n"
"stxr %w[loop], %[val], %[ptr]\n"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u64 *)ptr)
: [val] "r" (val));
} while (loop);
asm ("//__percpu_xchg_8\n"
"1: ldxr %[ret], %[ptr]\n"
" stxr %w[loop], %[val], %[ptr]\n"
" cbnz %w[loop], 1b"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u64 *)ptr)
: [val] "r" (val));
break;
default:
BUILD_BUG();

6
arch/arm64/include/asm/processor.h
View file

@ -188,8 +188,8 @@ static inline void spin_lock_prefetch(const void *ptr)
#endif
void cpu_enable_pan(void *__unused);
void cpu_enable_uao(void *__unused);
void cpu_enable_cache_maint_trap(void *__unused);
int cpu_enable_pan(void *__unused);
int cpu_enable_uao(void *__unused);
int cpu_enable_cache_maint_trap(void *__unused);
#endif /* __ASM_PROCESSOR_H */

2
arch/arm64/include/asm/sysreg.h
View file

@ -286,7 +286,7 @@ asm(
#define write_sysreg_s(v, r) do { \
u64 __val = (u64)v; \
asm volatile("msr_s " __stringify(r) ", %0" : : "rZ" (__val)); \
asm volatile("msr_s " __stringify(r) ", %x0" : : "rZ" (__val)); \
} while (0)
static inline void config_sctlr_el1(u32 clear, u32 set)

8
arch/arm64/include/asm/uaccess.h
View file

@ -21,6 +21,7 @@
/*
* User space memory access functions
*/
#include <linux/bitops.h>
#include <linux/kasan-checks.h>
#include <linux/string.h>
#include <linux/thread_info.h>
@ -102,6 +103,13 @@ static inline void set_fs(mm_segment_t fs)
flag; \
})
/*
* When dealing with data aborts or instruction traps we may end up with
* a tagged userland pointer. Clear the tag to get a sane pointer to pass
* on to access_ok(), for instance.
*/
#define untagged_addr(addr) sign_extend64(addr, 55)
#define access_ok(type, addr, size) __range_ok(addr, size)
#define user_addr_max get_fs

36
arch/arm64/kernel/armv8_deprecated.c
View file

@ -280,35 +280,43 @@ static void __init register_insn_emulation_sysctl(struct ctl_table *table)
/*
* Error-checking SWP macros implemented using ldxr{b}/stxr{b}
*/
#define __user_swpX_asm(data, addr, res, temp, B) \
/* Arbitrary constant to ensure forward-progress of the LL/SC loop */
#define __SWP_LL_SC_LOOPS 4
#define __user_swpX_asm(data, addr, res, temp, temp2, B) \
__asm__ __volatile__( \
" mov %w3, %w7\n" \
ALTERNATIVE("nop", SET_PSTATE_PAN(0), ARM64_HAS_PAN, \
CONFIG_ARM64_PAN) \
"0: ldxr"B" %w2, [%3]\n" \
"1: stxr"B" %w0, %w1, [%3]\n" \
"0: ldxr"B" %w2, [%4]\n" \
"1: stxr"B" %w0, %w1, [%4]\n" \
" cbz %w0, 2f\n" \
" mov %w0, %w4\n" \
" sub %w3, %w3, #1\n" \
" cbnz %w3, 0b\n" \
" mov %w0, %w5\n" \
" b 3f\n" \
"2:\n" \
" mov %w1, %w2\n" \
"3:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
"4: mov %w0, %w5\n" \
"4: mov %w0, %w6\n" \
" b 3b\n" \
" .popsection" \
_ASM_EXTABLE(0b, 4b) \
_ASM_EXTABLE(1b, 4b) \
ALTERNATIVE("nop", SET_PSTATE_PAN(1), ARM64_HAS_PAN, \
CONFIG_ARM64_PAN) \
: "=&r" (res), "+r" (data), "=&r" (temp) \
: "r" (addr), "i" (-EAGAIN), "i" (-EFAULT) \
: "=&r" (res), "+r" (data), "=&r" (temp), "=&r" (temp2) \
: "r" (addr), "i" (-EAGAIN), "i" (-EFAULT), \
"i" (__SWP_LL_SC_LOOPS) \
: "memory")
#define __user_swp_asm(data, addr, res, temp) \
__user_swpX_asm(data, addr, res, temp, "")
#define __user_swpb_asm(data, addr, res, temp) \
__user_swpX_asm(data, addr, res, temp, "b")
#define __user_swp_asm(data, addr, res, temp, temp2) \
__user_swpX_asm(data, addr, res, temp, temp2, "")
#define __user_swpb_asm(data, addr, res, temp, temp2) \
__user_swpX_asm(data, addr, res, temp, temp2, "b")
/*
* Bit 22 of the instruction encoding distinguishes between
@ -328,12 +336,12 @@ static int emulate_swpX(unsigned int address, unsigned int *data,
}
while (1) {
unsigned long temp;
unsigned long temp, temp2;
if (type == TYPE_SWPB)
__user_swpb_asm(*data, address, res, temp);
__user_swpb_asm(*data, address, res, temp, temp2);
else
__user_swp_asm(*data, address, res, temp);
__user_swp_asm(*data, address, res, temp, temp2);
if (likely(res != -EAGAIN) || signal_pending(current))
break;

3
arch/arm64/kernel/cpu_errata.c
View file

@ -39,10 +39,11 @@ has_mismatched_cache_line_size(const struct arm64_cpu_capabilities *entry,
(arm64_ftr_reg_ctrel0.sys_val & arm64_ftr_reg_ctrel0.strict_mask);
}
static void cpu_enable_trap_ctr_access(void *__unused)
static int cpu_enable_trap_ctr_access(void *__unused)
{
/* Clear SCTLR_EL1.UCT */
config_sctlr_el1(SCTLR_EL1_UCT, 0);
return 0;
}
#define MIDR_RANGE(model, min, max) \

10
arch/arm64/kernel/cpufeature.c
View file

@ -19,7 +19,9 @@
#define pr_fmt(fmt) "CPU features: " fmt
#include <linux/bsearch.h>
#include <linux/cpumask.h>
#include <linux/sort.h>
#include <linux/stop_machine.h>
#include <linux/types.h>
#include <asm/cpu.h>
#include <asm/cpufeature.h>
@ -941,7 +943,13 @@ void __init enable_cpu_capabilities(const struct arm64_cpu_capabilities *caps)
{
for (; caps->matches; caps++)
if (caps->enable && cpus_have_cap(caps->capability))
on_each_cpu(caps->enable, NULL, true);
/*
* Use stop_machine() as it schedules the work allowing
* us to modify PSTATE, instead of on_each_cpu() which
* uses an IPI, giving us a PSTATE that disappears when
* we return.
*/
stop_machine(caps->enable, NULL, cpu_online_mask);
}
/*

3
arch/arm64/kernel/head.S
View file

@ -586,8 +586,9 @@ CPU_LE( movk x0, #0x30d0, lsl #16 ) // Clear EE and E0E on LE systems
b.lt 4f // Skip if no PMU present
mrs x0, pmcr_el0 // Disable debug access traps
ubfx x0, x0, #11, #5 // to EL2 and allow access to
msr mdcr_el2, x0 // all PMU counters from EL1
4:
csel x0, xzr, x0, lt // all PMU counters from EL1
msr mdcr_el2, x0 // (if they exist)
/* Stage-2 translation */
msr vttbr_el2, xzr

18
arch/arm64/kernel/process.c
View file

@ -49,6 +49,7 @@
#include <asm/alternative.h>
#include <asm/compat.h>
#include <asm/cacheflush.h>
#include <asm/exec.h>
#include <asm/fpsimd.h>
#include <asm/mmu_context.h>
#include <asm/processor.h>
@ -186,10 +187,19 @@ void __show_regs(struct pt_regs *regs)
printk("pc : [<%016llx>] lr : [<%016llx>] pstate: %08llx\n",
regs->pc, lr, regs->pstate);
printk("sp : %016llx\n", sp);
for (i = top_reg; i >= 0; i--) {
i = top_reg;
while (i >= 0) {
printk("x%-2d: %016llx ", i, regs->regs[i]);
if (i % 2 == 0)
printk("\n");
i--;
if (i % 2 == 0) {
pr_cont("x%-2d: %016llx ", i, regs->regs[i]);
i--;
}
pr_cont("\n");
}
printk("\n");
}
@ -301,7 +311,7 @@ static void tls_thread_switch(struct task_struct *next)
}
/* Restore the UAO state depending on next's addr_limit */
static void uao_thread_switch(struct task_struct *next)
void uao_thread_switch(struct task_struct *next)
{
if (IS_ENABLED(CONFIG_ARM64_UAO)) {
if (task_thread_info(next)->addr_limit == KERNEL_DS)

1
arch/arm64/kernel/smp.c
View file

@ -544,6 +544,7 @@ acpi_map_gic_cpu_interface(struct acpi_madt_generic_interrupt *processor)
return;
}
bootcpu_valid = true;
early_map_cpu_to_node(0, acpi_numa_get_nid(0, hwid));
return;
}

11
arch/arm64/kernel/suspend.c
View file

@ -1,8 +1,11 @@
#include <linux/ftrace.h>
#include <linux/percpu.h>
#include <linux/slab.h>
#include <asm/alternative.h>
#include <asm/cacheflush.h>
#include <asm/cpufeature.h>
#include <asm/debug-monitors.h>
#include <asm/exec.h>
#include <asm/pgtable.h>
#include <asm/memory.h>
#include <asm/mmu_context.h>
@ -49,6 +52,14 @@ void notrace __cpu_suspend_exit(void)
*/
set_my_cpu_offset(per_cpu_offset(cpu));
/*
* PSTATE was not saved over suspend/resume, re-enable any detected
* features that might not have been set correctly.
*/
asm(ALTERNATIVE("nop", SET_PSTATE_PAN(1), ARM64_HAS_PAN,
CONFIG_ARM64_PAN));
uao_thread_switch(current);
/*
* Restore HW breakpoint registers to sane values
* before debug exceptions are possibly reenabled

30
arch/arm64/kernel/traps.c
View file

@ -428,24 +428,28 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs)
force_signal_inject(SIGILL, ILL_ILLOPC, regs, 0);
}
void cpu_enable_cache_maint_trap(void *__unused)
int cpu_enable_cache_maint_trap(void *__unused)
{
config_sctlr_el1(SCTLR_EL1_UCI, 0);
return 0;
}
#define __user_cache_maint(insn, address, res) \
asm volatile ( \
"1: " insn ", %1\n" \
" mov %w0, #0\n" \
"2:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
"3: mov %w0, %w2\n" \
" b 2b\n" \
" .popsection\n" \
_ASM_EXTABLE(1b, 3b) \
: "=r" (res) \
: "r" (address), "i" (-EFAULT) )
if (untagged_addr(address) >= user_addr_max()) \
res = -EFAULT; \
else \
asm volatile ( \
"1: " insn ", %1\n" \
" mov %w0, #0\n" \
"2:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
"3: mov %w0, %w2\n" \
" b 2b\n" \
" .popsection\n" \
_ASM_EXTABLE(1b, 3b) \
: "=r" (res) \
: "r" (address), "i" (-EFAULT) )
static void user_cache_maint_handler(unsigned int esr, struct pt_regs *regs)
{

15
arch/arm64/mm/fault.c
View file

@ -29,7 +29,9 @@
#include <linux/sched.h>
#include <linux/highmem.h>
#include <linux/perf_event.h>
#include <linux/preempt.h>
#include <asm/bug.h>
#include <asm/cpufeature.h>
#include <asm/exception.h>
#include <asm/debug-monitors.h>
@ -670,9 +672,17 @@ asmlinkage int __exception do_debug_exception(unsigned long addr,
NOKPROBE_SYMBOL(do_debug_exception);
#ifdef CONFIG_ARM64_PAN
void cpu_enable_pan(void *__unused)
int cpu_enable_pan(void *__unused)
{
/*
* We modify PSTATE. This won't work from irq context as the PSTATE
* is discarded once we return from the exception.
*/
WARN_ON_ONCE(in_interrupt());
config_sctlr_el1(SCTLR_EL1_SPAN, 0);
asm(SET_PSTATE_PAN(1));
return 0;
}
#endif /* CONFIG_ARM64_PAN */
@ -683,8 +693,9 @@ void cpu_enable_pan(void *__unused)
* We need to enable the feature at runtime (instead of adding it to
* PSR_MODE_EL1h) as the feature may not be implemented by the cpu.
*/
void cpu_enable_uao(void *__unused)
int cpu_enable_uao(void *__unused)
{
asm(SET_PSTATE_UAO(1));
return 0;
}
#endif /* CONFIG_ARM64_UAO */

26
arch/arm64/mm/init.c
View file

@ -421,35 +421,35 @@ void __init mem_init(void)
pr_notice("Virtual kernel memory layout:\n");
#ifdef CONFIG_KASAN
pr_cont(" kasan : 0x%16lx - 0x%16lx (%6ld GB)\n",
pr_notice(" kasan : 0x%16lx - 0x%16lx (%6ld GB)\n",
MLG(KASAN_SHADOW_START, KASAN_SHADOW_END));
#endif
pr_cont(" modules : 0x%16lx - 0x%16lx (%6ld MB)\n",
pr_notice(" modules : 0x%16lx - 0x%16lx (%6ld MB)\n",
MLM(MODULES_VADDR, MODULES_END));
pr_cont(" vmalloc : 0x%16lx - 0x%16lx (%6ld GB)\n",
pr_notice(" vmalloc : 0x%16lx - 0x%16lx (%6ld GB)\n",
MLG(VMALLOC_START, VMALLOC_END));
pr_cont(" .text : 0x%p" " - 0x%p" " (%6ld KB)\n",
pr_notice(" .text : 0x%p" " - 0x%p" " (%6ld KB)\n",
MLK_ROUNDUP(_text, _etext));
pr_cont(" .rodata : 0x%p" " - 0x%p" " (%6ld KB)\n",
pr_notice(" .rodata : 0x%p" " - 0x%p" " (%6ld KB)\n",
MLK_ROUNDUP(__start_rodata, __init_begin));
pr_cont(" .init : 0x%p" " - 0x%p" " (%6ld KB)\n",
pr_notice(" .init : 0x%p" " - 0x%p" " (%6ld KB)\n",
MLK_ROUNDUP(__init_begin, __init_end));
pr_cont(" .data : 0x%p" " - 0x%p" " (%6ld KB)\n",
pr_notice(" .data : 0x%p" " - 0x%p" " (%6ld KB)\n",
MLK_ROUNDUP(_sdata, _edata));
pr_cont(" .bss : 0x%p" " - 0x%p" " (%6ld KB)\n",
pr_notice(" .bss : 0x%p" " - 0x%p" " (%6ld KB)\n",
MLK_ROUNDUP(__bss_start, __bss_stop));
pr_cont(" fixed : 0x%16lx - 0x%16lx (%6ld KB)\n",
pr_notice(" fixed : 0x%16lx - 0x%16lx (%6ld KB)\n",
MLK(FIXADDR_START, FIXADDR_TOP));
pr_cont(" PCI I/O : 0x%16lx - 0x%16lx (%6ld MB)\n",
pr_notice(" PCI I/O : 0x%16lx - 0x%16lx (%6ld MB)\n",
MLM(PCI_IO_START, PCI_IO_END));
#ifdef CONFIG_SPARSEMEM_VMEMMAP
pr_cont(" vmemmap : 0x%16lx - 0x%16lx (%6ld GB maximum)\n",
pr_notice(" vmemmap : 0x%16lx - 0x%16lx (%6ld GB maximum)\n",
MLG(VMEMMAP_START, VMEMMAP_START + VMEMMAP_SIZE));
pr_cont(" 0x%16lx - 0x%16lx (%6ld MB actual)\n",
pr_notice(" 0x%16lx - 0x%16lx (%6ld MB actual)\n",
MLM((unsigned long)phys_to_page(memblock_start_of_DRAM()),
(unsigned long)virt_to_page(high_memory)));
#endif
pr_cont(" memory : 0x%16lx - 0x%16lx (%6ld MB)\n",
pr_notice(" memory : 0x%16lx - 0x%16lx (%6ld MB)\n",
MLM(__phys_to_virt(memblock_start_of_DRAM()),
(unsigned long)high_memory));

9
arch/arm64/mm/numa.c
View file

@ -147,7 +147,7 @@ static int __init early_cpu_to_node(int cpu)
static int __init pcpu_cpu_distance(unsigned int from, unsigned int to)
{
return node_distance(from, to);
return node_distance(early_cpu_to_node(from), early_cpu_to_node(to));
}
static void * __init pcpu_fc_alloc(unsigned int cpu, size_t size,
@ -223,8 +223,11 @@ static void __init setup_node_data(int nid, u64 start_pfn, u64 end_pfn)
void *nd;
int tnid;
pr_info("Initmem setup node %d [mem %#010Lx-%#010Lx]\n",
nid, start_pfn << PAGE_SHIFT, (end_pfn << PAGE_SHIFT) - 1);
if (start_pfn < end_pfn)
pr_info("Initmem setup node %d [mem %#010Lx-%#010Lx]\n", nid,
start_pfn << PAGE_SHIFT, (end_pfn << PAGE_SHIFT) - 1);
else
pr_info("Initmem setup node %d [<memory-less node>]\n", nid);
nd_pa = memblock_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid);
nd = __va(nd_pa);

2
arch/cris/arch-v32/drivers/cryptocop.c
View file

@ -3149,7 +3149,7 @@ static void print_dma_descriptors(struct cryptocop_int_operation *iop)
printk("print_dma_descriptors start\n");
printk("iop:\n");
printk("\tsid: 0x%lld\n", iop->sid);
printk("\tsid: 0x%llx\n", iop->sid);
printk("\tcdesc_out: 0x%p\n", iop->cdesc_out);
printk("\tcdesc_in: 0x%p\n", iop->cdesc_in);

4
arch/h8300/include/asm/thread_info.h
View file

@ -31,7 +31,6 @@ struct thread_info {
int cpu; /* cpu we're on */
int preempt_count; /* 0 => preemptable, <0 => BUG */
mm_segment_t addr_limit;
struct restart_block restart_block;
};
/*
@ -44,9 +43,6 @@ struct thread_info {
.cpu = 0, \
.preempt_count = INIT_PREEMPT_COUNT, \
.addr_limit = KERNEL_DS, \
.restart_block = { \
.fn = do_no_restart_syscall, \
}, \
}
#define init_thread_info (init_thread_union.thread_info)

2
arch/h8300/kernel/signal.c
View file

@ -79,7 +79,7 @@ restore_sigcontext(struct sigcontext *usc, int *pd0)
unsigned int er0;
/* Always make any pending restarted system calls return -EINTR */
current_thread_info()->restart_block.fn = do_no_restart_syscall;
current->restart_block.fn = do_no_restart_syscall;
/* restore passed registers */
#define COPY(r) do { err |= get_user(regs->r, &usc->sc_##r); } while (0)

2
arch/mips/Makefile
View file

@ -263,7 +263,7 @@ KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
VMLINUX_ENTRY_ADDRESS=$(entry-y) \
PLATFORM=$(platform-y)
PLATFORM="$(platform-y)"
ifdef CONFIG_32BIT
bootvars-y += ADDR_BITS=32
endif

3
arch/mips/boot/dts/mti/malta.dts
View file

@ -84,12 +84,13 @@ board-config@3e0000 {
fpga_regs: system-controller@1f000000 {
compatible = "mti,malta-fpga", "syscon", "simple-mfd";
reg = <0x1f000000 0x1000>;
native-endian;
reboot {
compatible = "syscon-reboot";
regmap = <&fpga_regs>;
offset = <0x500>;
mask = <0x4d>;
mask = <0x42>;
};
};

16
arch/mips/generic/init.c
View file

@ -29,10 +29,20 @@ static __initdata const struct mips_machine *mach;
static __initdata const void *mach_match_data;
void __init prom_init(void)
{
plat_get_fdt();
BUG_ON(!fdt);
}
void __init *plat_get_fdt(void)
{
const struct mips_machine *check_mach;
const struct of_device_id *match;
if (fdt)
/* Already set up */
return (void *)fdt;
if ((fw_arg0 == -2) && !fdt_check_header((void *)fw_arg1)) {
/*
* We booted using the UHI boot protocol, so we have been
@ -75,12 +85,6 @@ void __init prom_init(void)
/* Retrieve the machine's FDT */
fdt = mach->fdt;
}
BUG_ON(!fdt);
}
void __init *plat_get_fdt(void)
{
return (void *)fdt;
}

13
arch/mips/include/asm/fpu_emulator.h
View file

@ -63,6 +63,8 @@ do { \
extern int fpu_emulator_cop1Handler(struct pt_regs *xcp,
struct mips_fpu_struct *ctx, int has_fpu,
void *__user *fault_addr);
void force_fcr31_sig(unsigned long fcr31, void __user *fault_addr,
struct task_struct *tsk);
int process_fpemu_return(int sig, void __user *fault_addr,
unsigned long fcr31);
int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
@ -81,4 +83,15 @@ static inline void fpu_emulator_init_fpu(void)
set_fpr64(&t->thread.fpu.fpr[i], 0, SIGNALLING_NAN);
}
/*
* Mask the FCSR Cause bits according to the Enable bits, observing
* that Unimplemented is always enabled.
*/
static inline unsigned long mask_fcr31_x(unsigned long fcr31)
{
return fcr31 & (FPU_CSR_UNI_X |
((fcr31 & FPU_CSR_ALL_E) <<
(ffs(FPU_CSR_ALL_X) - ffs(FPU_CSR_ALL_E))));
}
#endif /* _ASM_FPU_EMULATOR_H */

7
arch/mips/include/asm/kvm_host.h
View file

@ -293,7 +293,10 @@ struct kvm_vcpu_arch {
/* Host KSEG0 address of the EI/DI offset */
void *kseg0_commpage;
u32 io_gpr; /* GPR used as IO source/target */
/* Resume PC after MMIO completion */
unsigned long io_pc;
/* GPR used as IO source/target */
u32 io_gpr;
struct hrtimer comparecount_timer;
/* Count timer control KVM register */
@ -315,8 +318,6 @@ struct kvm_vcpu_arch {
/* Bitmask of pending exceptions to be cleared */
unsigned long pending_exceptions_clr;
u32 pending_load_cause;
/* Save/Restore the entryhi register when are are preempted/scheduled back in */
unsigned long preempt_entryhi;

18
arch/mips/include/asm/switch_to.h
View file

@ -75,6 +75,22 @@ do { if (cpu_has_rw_llb) { \
} \
} while (0)
/*
* Check FCSR for any unmasked exceptions pending set with `ptrace',
* clear them and send a signal.
*/
#define __sanitize_fcr31(next) \
do { \
unsigned long fcr31 = mask_fcr31_x(next->thread.fpu.fcr31); \
void __user *pc; \
\
if (unlikely(fcr31)) { \
pc = (void __user *)task_pt_regs(next)->cp0_epc; \
next->thread.fpu.fcr31 &= ~fcr31; \
force_fcr31_sig(fcr31, pc, next); \
} \
} while (0)
/*
* For newly created kernel threads switch_to() will return to
* ret_from_kernel_thread, newly created user threads to ret_from_fork.
@ -85,6 +101,8 @@ do { if (cpu_has_rw_llb) { \
do { \
__mips_mt_fpaff_switch_to(prev); \
lose_fpu_inatomic(1, prev); \
if (tsk_used_math(next)) \
__sanitize_fcr31(next); \
if (cpu_has_dsp) { \
__save_dsp(prev); \
__restore_dsp(next); \

11
arch/mips/kernel/mips-cpc.c
View file

@ -21,6 +21,11 @@ static DEFINE_PER_CPU_ALIGNED(spinlock_t, cpc_core_lock);
static DEFINE_PER_CPU_ALIGNED(unsigned long, cpc_core_lock_flags);
phys_addr_t __weak mips_cpc_default_phys_base(void)
{
return 0;
}
/**
* mips_cpc_phys_base - retrieve the physical base address of the CPC
*
@ -43,8 +48,12 @@ static phys_addr_t mips_cpc_phys_base(void)
if (cpc_base & CM_GCR_CPC_BASE_CPCEN_MSK)
return cpc_base & CM_GCR_CPC_BASE_CPCBASE_MSK;
/* Otherwise, give it the default address & enable it */
/* Otherwise, use the default address */
cpc_base = mips_cpc_default_phys_base();
if (!cpc_base)
return cpc_base;
/* Enable the CPC, mapped at the default address */
write_gcr_cpc_base(cpc_base | CM_GCR_CPC_BASE_CPCEN_MSK);
return cpc_base;
}

10
arch/mips/kernel/mips-r2-to-r6-emul.c
View file

@ -899,7 +899,7 @@ static inline int mipsr2_find_op_func(struct pt_regs *regs, u32 inst,
* mipsr2_decoder: Decode and emulate a MIPS R2 instruction
* @regs: Process register set
* @inst: Instruction to decode and emulate
* @fcr31: Floating Point Control and Status Register returned
* @fcr31: Floating Point Control and Status Register Cause bits returned
*/
int mipsr2_decoder(struct pt_regs *regs, u32 inst, unsigned long *fcr31)
{
@ -1172,13 +1172,13 @@ int mipsr2_decoder(struct pt_regs *regs, u32 inst, unsigned long *fcr31)
err = fpu_emulator_cop1Handler(regs, &current->thread.fpu, 0,
&fault_addr);
*fcr31 = current->thread.fpu.fcr31;
/*
* We can't allow the emulated instruction to leave any of
* the cause bits set in $fcr31.
* We can't allow the emulated instruction to leave any
* enabled Cause bits set in $fcr31.
*/
current->thread.fpu.fcr31 &= ~FPU_CSR_ALL_X;
*fcr31 = res = mask_fcr31_x(current->thread.fpu.fcr31);
current->thread.fpu.fcr31 &= ~res;
/*
* this is a tricky issue - lose_fpu() uses LL/SC atomics

8
arch/mips/kernel/ptrace.c
View file

@ -79,16 +79,15 @@ void ptrace_disable(struct task_struct *child)
}
/*
* Poke at FCSR according to its mask. Don't set the cause bits as
* this is currently not handled correctly in FP context restoration
* and will cause an oops if a corresponding enable bit is set.
* Poke at FCSR according to its mask. Set the Cause bits even
* if a corresponding Enable bit is set. This will be noticed at
* the time the thread is switched to and SIGFPE thrown accordingly.
*/
static void ptrace_setfcr31(struct task_struct *child, u32 value)
{
u32 fcr31;
u32 mask;
value &= ~FPU_CSR_ALL_X;
fcr31 = child->thread.fpu.fcr31;
mask = boot_cpu_data.fpu_msk31;
child->thread.fpu.fcr31 = (value & ~mask) | (fcr31 & mask);
@ -817,6 +816,7 @@ long arch_ptrace(struct task_struct *child, long request,
break;
#endif
case FPC_CSR:
init_fp_ctx(child);
ptrace_setfcr31(child, data);
break;
case DSP_BASE ... DSP_BASE + 5: {

138
arch/mips/kernel/r2300_fpu.S
View file

@ -19,108 +19,86 @@
#include <asm/regdef.h>
#define EX(a,b) \
9: a,##b; \
.section __ex_table,"a"; \
PTR 9b,fault; \
.previous
#define EX2(a,b) \
9: a,##b; \
.section __ex_table,"a"; \
PTR 9b,bad_stack; \
PTR 9b+4,bad_stack; \
.previous
.set noreorder
.set mips1
/* Save floating point context */
/**
* _save_fp_context() - save FP context from the FPU
* @a0 - pointer to fpregs field of sigcontext
* @a1 - pointer to fpc_csr field of sigcontext
*
* Save FP context, including the 32 FP data registers and the FP
* control & status register, from the FPU to signal context.
*/
LEAF(_save_fp_context)
.set push
SET_HARDFLOAT
li v0, 0 # assume success
cfc1 t1,fcr31
EX(swc1 $f0,(SC_FPREGS+0)(a0))
EX(swc1 $f1,(SC_FPREGS+8)(a0))
EX(swc1 $f2,(SC_FPREGS+16)(a0))
EX(swc1 $f3,(SC_FPREGS+24)(a0))
EX(swc1 $f4,(SC_FPREGS+32)(a0))
EX(swc1 $f5,(SC_FPREGS+40)(a0))
EX(swc1 $f6,(SC_FPREGS+48)(a0))
EX(swc1 $f7,(SC_FPREGS+56)(a0))
EX(swc1 $f8,(SC_FPREGS+64)(a0))
EX(swc1 $f9,(SC_FPREGS+72)(a0))
EX(swc1 $f10,(SC_FPREGS+80)(a0))
EX(swc1 $f11,(SC_FPREGS+88)(a0))
EX(swc1 $f12,(SC_FPREGS+96)(a0))
EX(swc1 $f13,(SC_FPREGS+104)(a0))
EX(swc1 $f14,(SC_FPREGS+112)(a0))
EX(swc1 $f15,(SC_FPREGS+120)(a0))
EX(swc1 $f16,(SC_FPREGS+128)(a0))
EX(swc1 $f17,(SC_FPREGS+136)(a0))
EX(swc1 $f18,(SC_FPREGS+144)(a0))
EX(swc1 $f19,(SC_FPREGS+152)(a0))
EX(swc1 $f20,(SC_FPREGS+160)(a0))
EX(swc1 $f21,(SC_FPREGS+168)(a0))
EX(swc1 $f22,(SC_FPREGS+176)(a0))
EX(swc1 $f23,(SC_FPREGS+184)(a0))
EX(swc1 $f24,(SC_FPREGS+192)(a0))
EX(swc1 $f25,(SC_FPREGS+200)(a0))
EX(swc1 $f26,(SC_FPREGS+208)(a0))
EX(swc1 $f27,(SC_FPREGS+216)(a0))
EX(swc1 $f28,(SC_FPREGS+224)(a0))
EX(swc1 $f29,(SC_FPREGS+232)(a0))
EX(swc1 $f30,(SC_FPREGS+240)(a0))
EX(swc1 $f31,(SC_FPREGS+248)(a0))
EX(sw t1,(SC_FPC_CSR)(a0))
cfc1 t0,$0 # implementation/version
cfc1 t1, fcr31
EX2(s.d $f0, 0(a0))
EX2(s.d $f2, 16(a0))
EX2(s.d $f4, 32(a0))
EX2(s.d $f6, 48(a0))
EX2(s.d $f8, 64(a0))
EX2(s.d $f10, 80(a0))
EX2(s.d $f12, 96(a0))
EX2(s.d $f14, 112(a0))
EX2(s.d $f16, 128(a0))
EX2(s.d $f18, 144(a0))
EX2(s.d $f20, 160(a0))
EX2(s.d $f22, 176(a0))
EX2(s.d $f24, 192(a0))
EX2(s.d $f26, 208(a0))
EX2(s.d $f28, 224(a0))
EX2(s.d $f30, 240(a0))
jr ra
EX(sw t1, (a1))
.set pop
.set nomacro
EX(sw t0,(SC_FPC_EIR)(a0))
.set macro
END(_save_fp_context)
/*
* Restore FPU state:
* - fp gp registers
* - cp1 status/control register
/**
* _restore_fp_context() - restore FP context to the FPU
* @a0 - pointer to fpregs field of sigcontext
* @a1 - pointer to fpc_csr field of sigcontext
*
* We base the decision which registers to restore from the signal stack
* frame on the current content of c0_status, not on the content of the
* stack frame which might have been changed by the user.
* Restore FP context, including the 32 FP data registers and the FP
* control & status register, from signal context to the FPU.
*/
LEAF(_restore_fp_context)
.set push
SET_HARDFLOAT
li v0, 0 # assume success
EX(lw t0,(SC_FPC_CSR)(a0))
EX(lwc1 $f0,(SC_FPREGS+0)(a0))
EX(lwc1 $f1,(SC_FPREGS+8)(a0))
EX(lwc1 $f2,(SC_FPREGS+16)(a0))
EX(lwc1 $f3,(SC_FPREGS+24)(a0))
EX(lwc1 $f4,(SC_FPREGS+32)(a0))
EX(lwc1 $f5,(SC_FPREGS+40)(a0))
EX(lwc1 $f6,(SC_FPREGS+48)(a0))
EX(lwc1 $f7,(SC_FPREGS+56)(a0))
EX(lwc1 $f8,(SC_FPREGS+64)(a0))
EX(lwc1 $f9,(SC_FPREGS+72)(a0))
EX(lwc1 $f10,(SC_FPREGS+80)(a0))
EX(lwc1 $f11,(SC_FPREGS+88)(a0))
EX(lwc1 $f12,(SC_FPREGS+96)(a0))
EX(lwc1 $f13,(SC_FPREGS+104)(a0))
EX(lwc1 $f14,(SC_FPREGS+112)(a0))
EX(lwc1 $f15,(SC_FPREGS+120)(a0))
EX(lwc1 $f16,(SC_FPREGS+128)(a0))
EX(lwc1 $f17,(SC_FPREGS+136)(a0))
EX(lwc1 $f18,(SC_FPREGS+144)(a0))
EX(lwc1 $f19,(SC_FPREGS+152)(a0))
EX(lwc1 $f20,(SC_FPREGS+160)(a0))
EX(lwc1 $f21,(SC_FPREGS+168)(a0))
EX(lwc1 $f22,(SC_FPREGS+176)(a0))
EX(lwc1 $f23,(SC_FPREGS+184)(a0))
EX(lwc1 $f24,(SC_FPREGS+192)(a0))
EX(lwc1 $f25,(SC_FPREGS+200)(a0))
EX(lwc1 $f26,(SC_FPREGS+208)(a0))
EX(lwc1 $f27,(SC_FPREGS+216)(a0))
EX(lwc1 $f28,(SC_FPREGS+224)(a0))
EX(lwc1 $f29,(SC_FPREGS+232)(a0))
EX(lwc1 $f30,(SC_FPREGS+240)(a0))
EX(lwc1 $f31,(SC_FPREGS+248)(a0))
EX(lw t0, (a1))
EX2(l.d $f0, 0(a0))
EX2(l.d $f2, 16(a0))
EX2(l.d $f4, 32(a0))
EX2(l.d $f6, 48(a0))
EX2(l.d $f8, 64(a0))
EX2(l.d $f10, 80(a0))
EX2(l.d $f12, 96(a0))
EX2(l.d $f14, 112(a0))
EX2(l.d $f16, 128(a0))
EX2(l.d $f18, 144(a0))
EX2(l.d $f20, 160(a0))
EX2(l.d $f22, 176(a0))
EX2(l.d $f24, 192(a0))
EX2(l.d $f26, 208(a0))
EX2(l.d $f28, 224(a0))
EX2(l.d $f30, 240(a0))
jr ra
ctc1 t0,fcr31
ctc1 t0, fcr31
.set pop
END(_restore_fp_context)
.set reorder

89
arch/mips/kernel/r6000_fpu.S
View file

@ -21,7 +21,14 @@
.set push
SET_HARDFLOAT
/* Save floating point context */
/**
* _save_fp_context() - save FP context from the FPU
* @a0 - pointer to fpregs field of sigcontext
* @a1 - pointer to fpc_csr field of sigcontext
*
* Save FP context, including the 32 FP data registers and the FP
* control & status register, from the FPU to signal context.
*/
LEAF(_save_fp_context)
mfc0 t0,CP0_STATUS
sll t0,t0,2
@ -30,59 +37,59 @@
cfc1 t1,fcr31
/* Store the 16 double precision registers */
sdc1 $f0,(SC_FPREGS+0)(a0)
sdc1 $f2,(SC_FPREGS+16)(a0)
sdc1 $f4,(SC_FPREGS+32)(a0)
sdc1 $f6,(SC_FPREGS+48)(a0)
sdc1 $f8,(SC_FPREGS+64)(a0)
sdc1 $f10,(SC_FPREGS+80)(a0)
sdc1 $f12,(SC_FPREGS+96)(a0)
sdc1 $f14,(SC_FPREGS+112)(a0)
sdc1 $f16,(SC_FPREGS+128)(a0)
sdc1 $f18,(SC_FPREGS+144)(a0)
sdc1 $f20,(SC_FPREGS+160)(a0)
sdc1 $f22,(SC_FPREGS+176)(a0)
sdc1 $f24,(SC_FPREGS+192)(a0)
sdc1 $f26,(SC_FPREGS+208)(a0)
sdc1 $f28,(SC_FPREGS+224)(a0)
sdc1 $f30,(SC_FPREGS+240)(a0)
sdc1 $f0,0(a0)
sdc1 $f2,16(a0)
sdc1 $f4,32(a0)
sdc1 $f6,48(a0)
sdc1 $f8,64(a0)
sdc1 $f10,80(a0)
sdc1 $f12,96(a0)
sdc1 $f14,112(a0)
sdc1 $f16,128(a0)
sdc1 $f18,144(a0)
sdc1 $f20,160(a0)
sdc1 $f22,176(a0)
sdc1 $f24,192(a0)
sdc1 $f26,208(a0)
sdc1 $f28,224(a0)
sdc1 $f30,240(a0)
jr ra
sw t0,SC_FPC_CSR(a0)
sw t0,(a1)
1: jr ra
nop
END(_save_fp_context)
/* Restore FPU state:
* - fp gp registers
* - cp1 status/control register
/**
* _restore_fp_context() - restore FP context to the FPU
* @a0 - pointer to fpregs field of sigcontext
* @a1 - pointer to fpc_csr field of sigcontext
*
* We base the decision which registers to restore from the signal stack
* frame on the current content of c0_status, not on the content of the
* stack frame which might have been changed by the user.
* Restore FP context, including the 32 FP data registers and the FP
* control & status register, from signal context to the FPU.
*/
LEAF(_restore_fp_context)
mfc0 t0,CP0_STATUS
sll t0,t0,2
bgez t0,1f
lw t0,SC_FPC_CSR(a0)
lw t0,(a1)
/* Restore the 16 double precision registers */
ldc1 $f0,(SC_FPREGS+0)(a0)
ldc1 $f2,(SC_FPREGS+16)(a0)
ldc1 $f4,(SC_FPREGS+32)(a0)
ldc1 $f6,(SC_FPREGS+48)(a0)
ldc1 $f8,(SC_FPREGS+64)(a0)
ldc1 $f10,(SC_FPREGS+80)(a0)
ldc1 $f12,(SC_FPREGS+96)(a0)
ldc1 $f14,(SC_FPREGS+112)(a0)
ldc1 $f16,(SC_FPREGS+128)(a0)
ldc1 $f18,(SC_FPREGS+144)(a0)
ldc1 $f20,(SC_FPREGS+160)(a0)
ldc1 $f22,(SC_FPREGS+176)(a0)
ldc1 $f24,(SC_FPREGS+192)(a0)
ldc1 $f26,(SC_FPREGS+208)(a0)
ldc1 $f28,(SC_FPREGS+224)(a0)
ldc1 $f30,(SC_FPREGS+240)(a0)
ldc1 $f0,0(a0)
ldc1 $f2,16(a0)
ldc1 $f4,32(a0)
ldc1 $f6,48(a0)
ldc1 $f8,64(a0)
ldc1 $f10,80(a0)
ldc1 $f12,96(a0)
ldc1 $f14,112(a0)
ldc1 $f16,128(a0)
ldc1 $f18,144(a0)
ldc1 $f20,160(a0)
ldc1 $f22,176(a0)
ldc1 $f24,192(a0)
ldc1 $f26,208(a0)
ldc1 $f28,224(a0)
ldc1 $f30,240(a0)
jr ra
ctc1 t0,fcr31
1: jr ra

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