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17511 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Peter Zijlstra
|
cabdc3a847 |
sched,x86: Don't use cluster topology for x86 hybrid CPUs
For x86 hybrid CPUs like Alder Lake, the order of CPU selection should
be based strictly on CPU priority. Don't include cluster topology for
hybrid CPUs to avoid interference with such CPU selection order.
On Alder Lake, the Atom CPU cluster has more capacity (4 Atom CPUs) vs
Big core cluster (2 hyperthread CPUs). This could potentially bias CPU
selection towards Atom over Big Core, when Big core CPU has higher
priority.
Fixes:
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Michael Sterritt
|
1d5379d047 |
x86/sev: Fix SEV-ES INS/OUTS instructions for word, dword, and qword
Properly type the operands being passed to __put_user()/__get_user().
Otherwise, these routines truncate data for dependent instructions
(e.g., INSW) and only read/write one byte.
This has been tested by sending a string with REP OUTSW to a port and
then reading it back in with REP INSW on the same port.
Previous behavior was to only send and receive the first char of the
size. For example, word operations for "abcd" would only read/write
"ac". With change, the full string is now written and read back.
Fixes:
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Feng Tang
|
b50db7095f |
x86/tsc: Disable clocksource watchdog for TSC on qualified platorms
There are cases that the TSC clocksource is wrongly judged as unstable by
the clocksource watchdog mechanism which tries to validate the TSC against
HPET, PM_TIMER or jiffies. While there is hardly a general reliable way to
check the validity of a watchdog, Thomas Gleixner proposed [1]:
"I'm inclined to lift that requirement when the CPU has:
1) X86_FEATURE_CONSTANT_TSC
2) X86_FEATURE_NONSTOP_TSC
3) X86_FEATURE_NONSTOP_TSC_S3
4) X86_FEATURE_TSC_ADJUST
5) At max. 4 sockets
After two decades of horrors we're finally at a point where TSC seems
to be halfway reliable and less abused by BIOS tinkerers. TSC_ADJUST
was really key as we can now detect even small modifications reliably
and the important point is that we can cure them as well (not pretty
but better than all other options)."
As feature #3 X86_FEATURE_NONSTOP_TSC_S3 only exists on several generations
of Atom processorz, and is always coupled with X86_FEATURE_CONSTANT_TSC
and X86_FEATURE_NONSTOP_TSC, skip checking it, and also be more defensive
to use maximal 2 sockets.
The check is done inside tsc_init() before registering 'tsc-early' and
'tsc' clocksources, as there were cases that both of them had been
wrongly judged as unreliable.
For more background of tsc/watchdog, there is a good summary in [2]
[tglx} Update vs. jiffies:
On systems where the only remaining clocksource aside of TSC is jiffies
there is no way to make this work because that creates a circular
dependency. Jiffies accuracy depends on not missing a periodic timer
interrupt, which is not guaranteed. That could be detected by TSC, but as
TSC is not trusted this cannot be compensated. The consequence is a
circulus vitiosus which results in shutting down TSC and falling back to
the jiffies clocksource which is even more unreliable.
[1]. https://lore.kernel.org/lkml/87eekfk8bd.fsf@nanos.tec.linutronix.de/
[2]. https://lore.kernel.org/lkml/87a6pimt1f.ffs@nanos.tec.linutronix.de/
[ tglx: Refine comment and amend changelog ]
Fixes:
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Feng Tang
|
c7719e7934 |
x86/tsc: Add a timer to make sure TSC_adjust is always checked
The TSC_ADJUST register is checked every time a CPU enters idle state, but
Thomas Gleixner mentioned there is still a caveat that a system won't enter
idle [1], either because it's too busy or configured purposely to not enter
idle.
Setup a periodic timer (every 10 minutes) to make sure the check is
happening on a regular base.
[1] https://lore.kernel.org/lkml/875z286xtk.fsf@nanos.tec.linutronix.de/
Fixes:
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Marco Elver
|
52d0b8b187 |
x86/fpu/signal: Initialize sw_bytes in save_xstate_epilog()
save_sw_bytes() did not fully initialize sw_bytes, which caused KMSAN
to report an infoleak (see below).
Initialize sw_bytes explicitly to avoid this.
KMSAN report follows:
=====================================================
BUG: KMSAN: kernel-infoleak in instrument_copy_to_user ./include/linux/instrumented.h:121
BUG: KMSAN: kernel-infoleak in __copy_to_user ./include/linux/uaccess.h:154
BUG: KMSAN: kernel-infoleak in save_xstate_epilog+0x2df/0x510 arch/x86/kernel/fpu/signal.c:127
instrument_copy_to_user ./include/linux/instrumented.h:121
__copy_to_user ./include/linux/uaccess.h:154
save_xstate_epilog+0x2df/0x510 arch/x86/kernel/fpu/signal.c:127
copy_fpstate_to_sigframe+0x861/0xb60 arch/x86/kernel/fpu/signal.c:245
get_sigframe+0x656/0x7e0 arch/x86/kernel/signal.c:296
__setup_rt_frame+0x14d/0x2a60 arch/x86/kernel/signal.c:471
setup_rt_frame arch/x86/kernel/signal.c:781
handle_signal arch/x86/kernel/signal.c:825
arch_do_signal_or_restart+0x417/0xdd0 arch/x86/kernel/signal.c:870
handle_signal_work kernel/entry/common.c:149
exit_to_user_mode_loop+0x1f6/0x490 kernel/entry/common.c:173
exit_to_user_mode_prepare kernel/entry/common.c:208
__syscall_exit_to_user_mode_work kernel/entry/common.c:290
syscall_exit_to_user_mode+0x7e/0xc0 kernel/entry/common.c:302
do_syscall_64+0x60/0xd0 arch/x86/entry/common.c:88
entry_SYSCALL_64_after_hwframe+0x44/0xae ??:?
Local variable sw_bytes created at:
save_xstate_epilog+0x80/0x510 arch/x86/kernel/fpu/signal.c:121
copy_fpstate_to_sigframe+0x861/0xb60 arch/x86/kernel/fpu/signal.c:245
Bytes 20-47 of 48 are uninitialized
Memory access of size 48 starts at ffff8880801d3a18
Data copied to user address 00007ffd90e2ef50
=====================================================
Link: https://lore.kernel.org/all/CAG_fn=V9T6OKPonSjsi9PmWB0hMHFC=yawozdft8i1-MSxrv=w@mail.gmail.com/
Fixes:
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Borislav Petkov
|
c0f2077baa |
x86/boot: Mark prepare_command_line() __init
Fix: WARNING: modpost: vmlinux.o(.text.unlikely+0x64d0): Section mismatch in reference \ from the function prepare_command_line() to the variable .init.data:command_line The function prepare_command_line() references the variable __initdata command_line. This is often because prepare_command_line lacks a __initdata annotation or the annotation of command_line is wrong. Apparently some toolchains do different inlining decisions. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/YZySgpmBcNNM2qca@zn.tnic |
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Linus Torvalds
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40c93d7fff |
Two X86 fixes:
- Move the command line preparation and the early command line parsing
earlier so that the command line parameters which affect
early_reserve_memory(), e.g. efi=nosftreserve, are taken into
account. This was broken when the invocation of early_reserve_memory()
was moved recently.
- Use an atomic type for the SGX page accounting, which is read and
written lockless, to plug various race conditions related to it.
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Merge tag 'x86-urgent-2021-11-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
- Move the command line preparation and the early command line parsing
earlier so that the command line parameters which affect
early_reserve_memory(), e.g. efi=nosftreserve, are taken into
account. This was broken when the invocation of
early_reserve_memory() was moved recently.
- Use an atomic type for the SGX page accounting, which is read and
written locklessly, to plug various race conditions related to it.
* tag 'x86-urgent-2021-11-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sgx: Fix free page accounting
x86/boot: Pull up cmdline preparation and early param parsing
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Linus Torvalds
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7af959b5d5 |
Merge branch 'SA_IMMUTABLE-fixes-for-v5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull exit-vs-signal handling fixes from Eric Biederman: "This is a small set of changes where debuggers were no longer able to intercept synchronous SIGTRAP and SIGSEGV, introduced by the exit cleanups. This is essentially the change you suggested with all of i's dotted and the t's crossed so that ptrace can intercept all of the cases it has been able to intercept the past, and all of the cases that made it to exit without giving ptrace a chance still don't give ptrace a chance" * 'SA_IMMUTABLE-fixes-for-v5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: signal: Replace force_fatal_sig with force_exit_sig when in doubt signal: Don't always set SA_IMMUTABLE for forced signals |
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Peter Zijlstra
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0dc636b3b7 |
x86: Pin task-stack in __get_wchan()
When commit |
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Eric W. Biederman
|
fcb116bc43 |
signal: Replace force_fatal_sig with force_exit_sig when in doubt
Recently to prevent issues with SECCOMP_RET_KILL and similar signals being changed before they are delivered SA_IMMUTABLE was added. Unfortunately this broke debuggers[1][2] which reasonably expect to be able to trap synchronous SIGTRAP and SIGSEGV even when the target process is not configured to handle those signals. Add force_exit_sig and use it instead of force_fatal_sig where historically the code has directly called do_exit. This has the implementation benefits of going through the signal exit path (including generating core dumps) without the danger of allowing userspace to ignore or change these signals. This avoids userspace regressions as older kernels exited with do_exit which debuggers also can not intercept. In the future is should be possible to improve the quality of implementation of the kernel by changing some of these force_exit_sig calls to force_fatal_sig. That can be done where it matters on a case-by-case basis with careful analysis. Reported-by: Kyle Huey <me@kylehuey.com> Reported-by: kernel test robot <oliver.sang@intel.com> [1] https://lkml.kernel.org/r/CAP045AoMY4xf8aC_4QU_-j7obuEPYgTcnQQP3Yxk=2X90jtpjw@mail.gmail.com [2] https://lkml.kernel.org/r/20211117150258.GB5403@xsang-OptiPlex-9020 Fixes: |
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Reinette Chatre
|
ac5d272a0a |
x86/sgx: Fix free page accounting
The SGX driver maintains a single global free page counter,
sgx_nr_free_pages, that reflects the number of free pages available
across all NUMA nodes. Correspondingly, a list of free pages is
associated with each NUMA node and sgx_nr_free_pages is updated
every time a page is added or removed from any of the free page
lists. The main usage of sgx_nr_free_pages is by the reclaimer
that runs when it (sgx_nr_free_pages) goes below a watermark
to ensure that there are always some free pages available to, for
example, support efficient page faults.
With sgx_nr_free_pages accessed and modified from a few places
it is essential to ensure that these accesses are done safely but
this is not the case. sgx_nr_free_pages is read without any
protection and updated with inconsistent protection by any one
of the spin locks associated with the individual NUMA nodes.
For example:
CPU_A CPU_B
----- -----
spin_lock(&nodeA->lock); spin_lock(&nodeB->lock);
... ...
sgx_nr_free_pages--; /* NOT SAFE */ sgx_nr_free_pages--;
spin_unlock(&nodeA->lock); spin_unlock(&nodeB->lock);
Since sgx_nr_free_pages may be protected by different spin locks
while being modified from different CPUs, the following scenario
is possible:
CPU_A CPU_B
----- -----
{sgx_nr_free_pages = 100}
spin_lock(&nodeA->lock); spin_lock(&nodeB->lock);
sgx_nr_free_pages--; sgx_nr_free_pages--;
/* LOAD sgx_nr_free_pages = 100 */ /* LOAD sgx_nr_free_pages = 100 */
/* sgx_nr_free_pages-- */ /* sgx_nr_free_pages-- */
/* STORE sgx_nr_free_pages = 99 */ /* STORE sgx_nr_free_pages = 99 */
spin_unlock(&nodeA->lock); spin_unlock(&nodeB->lock);
In the above scenario, sgx_nr_free_pages is decremented from two CPUs
but instead of sgx_nr_free_pages ending with a value that is two less
than it started with, it was only decremented by one while the number
of free pages were actually reduced by two. The consequence of
sgx_nr_free_pages not being protected is that its value may not
accurately reflect the actual number of free pages on the system,
impacting the availability of free pages in support of many flows.
The problematic scenario is when the reclaimer does not run because it
believes there to be sufficient free pages while any attempt to allocate
a page fails because there are no free pages available. In the SGX driver
the reclaimer's watermark is only 32 pages so after encountering the
above example scenario 32 times a user space hang is possible when there
are no more free pages because of repeated page faults caused by no
free pages made available.
The following flow was encountered:
asm_exc_page_fault
...
sgx_vma_fault()
sgx_encl_load_page()
sgx_encl_eldu() // Encrypted page needs to be loaded from backing
// storage into newly allocated SGX memory page
sgx_alloc_epc_page() // Allocate a page of SGX memory
__sgx_alloc_epc_page() // Fails, no free SGX memory
...
if (sgx_should_reclaim(SGX_NR_LOW_PAGES)) // Wake reclaimer
wake_up(&ksgxd_waitq);
return -EBUSY; // Return -EBUSY giving reclaimer time to run
return -EBUSY;
return -EBUSY;
return VM_FAULT_NOPAGE;
The reclaimer is triggered in above flow with the following code:
static bool sgx_should_reclaim(unsigned long watermark)
{
return sgx_nr_free_pages < watermark &&
!list_empty(&sgx_active_page_list);
}
In the problematic scenario there were no free pages available yet the
value of sgx_nr_free_pages was above the watermark. The allocation of
SGX memory thus always failed because of a lack of free pages while no
free pages were made available because the reclaimer is never started
because of sgx_nr_free_pages' incorrect value. The consequence was that
user space kept encountering VM_FAULT_NOPAGE that caused the same
address to be accessed repeatedly with the same result.
Change the global free page counter to an atomic type that
ensures simultaneous updates are done safely. While doing so, move
the updating of the variable outside of the spin lock critical
section to which it does not belong.
Cc: stable@vger.kernel.org
Fixes:
|
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Sean Christopherson
|
f3e613e72f |
x86/hyperv: Move required MSRs check to initial platform probing
Explicitly check for MSR_HYPERCALL and MSR_VP_INDEX support when probing for running as a Hyper-V guest instead of waiting until hyperv_init() to detect the bogus configuration. Add messages to give the admin a heads up that they are likely running on a broken virtual machine setup. At best, silently disabling Hyper-V is confusing and difficult to debug, e.g. the kernel _says_ it's using all these fancy Hyper-V features, but always falls back to the native versions. At worst, the half baked setup will crash/hang the kernel. Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Link: https://lore.kernel.org/r/20211104182239.1302956-3-seanjc@google.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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Borislav Petkov
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8d48bf8206 |
x86/boot: Pull up cmdline preparation and early param parsing
Dan reports that Anjaneya Chagam can no longer use the efi=nosoftreserve
kernel command line parameter to suppress "soft reservation" behavior.
This is due to the fact that the following call-chain happens at boot:
early_reserve_memory
|-> efi_memblock_x86_reserve_range
|-> efi_fake_memmap_early
which does
if (!efi_soft_reserve_enabled())
return;
and that would have set EFI_MEM_NO_SOFT_RESERVE after having parsed
"nosoftreserve".
However, parse_early_param() gets called *after* it, leading to the boot
cmdline not being taken into account.
Therefore, carve out the command line preparation into a separate
function which does the early param parsing too. So that it all goes
together.
And then call that function before early_reserve_memory() so that the
params would have been parsed by then.
Fixes:
|
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Linus Torvalds
|
218cc8b860 |
A single fix for static calls to make the trampoline patching more robust
by placing explicit signature bytes after the call trampoline to prevent patching random other jumps like the CFI jump table entries. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmGRDKsTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoZeNEADEFTbUJKd8812O9vkY9we1GDAtH7bY z6sYkh0/rPvYjdPfHuwqW8tUAl+CO2ne2X8FRPKgEdRLg44BY4HaMHmujdbGh3fh zpqynUBPoOIgtWxAPGdF+JxjrKlzjFd+WwjG3qBXOF3pjKgCc5knyjTucsl6ced3 wF293rSYrIJ6uRv2TTNbM5hWJdC0arWbdMFnwQTxeZR54WLpu7Wfm+CCK41w0fAU nrfSsv73WEwpmAZNh04wsZsf7h6yCO7dCrIJD/3mpJtrUVBZXuZAKDzUzJPvHJal T8LcKwxZQAgPv0ubmOCrolj98Qp6PAPSdDJbzNsCJUYEbBqaB2inJ0PeHcZPspy9 YyW00EHXD2UKm/GNF/DIlhoiNxOSh8Wn4b6H5ZRML50bS7jsMp8YVbticWEjItL6 N4/61c45/uPILBS+Lysj0aqyj4TvagiuffJFWjw3YAQ+Gp/pzlJwRNjrw7/4DxAx KdpM881IKCR8UowBz3gIiA9FrJv2dGMqq31Rs1fjuauxkIX0gV3c64tAIRWrVscT k6GKGvHSis5cT97K3yhmNH0BUND+Skeku8G/SnTkefvcB85aU/7HBkLLJpw0w84F F6PTCaCJOEHrl3ADkilsi3z0sKWrph6aAzDEgp6Q6cmo9ulFAGw0bjuJb59xsvVK flIvTLUY3n76FA== =dgiF -----END PGP SIGNATURE----- Merge tag 'locking-urgent-2021-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 static call update from Thomas Gleixner: "A single fix for static calls to make the trampoline patching more robust by placing explicit signature bytes after the call trampoline to prevent patching random other jumps like the CFI jump table entries" * tag 'locking-urgent-2021-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: static_call,x86: Robustify trampoline patching |
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Linus Torvalds
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fc661f2dcb |
- Avoid touching ~100 config files in order to be able to select
the preemption model - clear cluster CPU masks too, on the CPU unplug path - prevent use-after-free in cfs - Prevent a race condition when updating CPU cache domains - Factor out common shared part of smp_prepare_cpus() into a common helper which can be called by both baremetal and Xen, in order to fix a booting of Xen PV guests -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmGQ8HcACgkQEsHwGGHe VUouoA//WAZ/dZu7IiM06JhZWswa2yNsdU8qQHys81lEqstaBqiWuZdg1qJTVIir 2d0aN0keiPcsLyAsp1UJ2g/K/7D5vSJWDzsHKfEAToiAm8Tntai2LlSocWWfeSQm 10grDHWpEHbj0hTHTA6HYOr2WbY4/LnR4cdL0WobIzivIrRTx49d0XUOUfWLP5KX 60uM6dSjwpJrQUnvzk+bhGiHVmutFrEJy+UU/0o+nxkdhwraNiSbLi0007BGRCof 6dokRRvLLR09dl1LMG51gVjQch4j/lCx6EWWUhYOFeV3I3gibSCNkmu7dpmMCBTR QWO01cR9gyFN4xQ2is4I36M5L0/8T+sbGvvXIXNDT/XWr0/p+g6p2mx0cd2XiYIr ZthGRcxxV/KGmxfPaygKS9tpQseMEIrdd6VjAnGfZ3OS6CtUvYt8d0B2Soj8FALQ N9fMXDIEP3uUZim8UvCT6HBKlj9LR5uI5n+dAQ6uzsenO9WqeGeldc/N26/+osdN vo4lNYTqiXJPhJvunYW5t4j5JnUa3grDHioAPWaQRJlWtEZBGKs9SXTcweg/KURb mNfe1RfSlGJt28RD3E18gXeSS7xWdKgpcVX1rmW/9tUjX04NNDWjq4sAzOj7c+Ir 4sr78XgCY0pUxFaFYxvQWFUy7wcm0zAczo1RGUhcDTf1edDEvjo= =s2MX -----END PGP SIGNATURE----- Merge tag 'sched_urgent_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fixes from Borislav Petkov: - Avoid touching ~100 config files in order to be able to select the preemption model - clear cluster CPU masks too, on the CPU unplug path - prevent use-after-free in cfs - Prevent a race condition when updating CPU cache domains - Factor out common shared part of smp_prepare_cpus() into a common helper which can be called by both baremetal and Xen, in order to fix a booting of Xen PV guests * tag 'sched_urgent_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: preempt: Restore preemption model selection configs arch_topology: Fix missing clear cluster_cpumask in remove_cpu_topology() sched/fair: Prevent dead task groups from regaining cfs_rq's sched/core: Mitigate race cpus_share_cache()/update_top_cache_domain() x86/smp: Factor out parts of native_smp_prepare_cpus() |
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Linus Torvalds
|
1654e95ee3 |
- Add the model number of a new, Raptor Lake CPU, to intel-family.h
- Do not log spurious corrected MCEs on SKL too, due to an erratum - Clarify the path of paravirt ops patches upstream - Add an optimization to avoid writing out AMX components to sigframes when former are in init state -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmGQ3CgACgkQEsHwGGHe VUoLAA/+NXRvcBHYkLaByT9f4OI6B79HzyguIBSfipYiw8ir0H7uEdV5FUCCUgCz egBRVFpOsXWt1teeuu6ViO+WBHncUxG/ryZ0ka35lri/3kuVYnugZExWDs4MrGR5 vehRXehOxYNRaYc3oLYjubSbxqF1nWz3WWfGfhiBKk0jT/S1T9tX6lsRXlKsJCgj M4x5aqBWP8HTbFQfqjdHwagNitmSKzgjZvMcC4UWcql33ZCycbjvRdrAzBtw7WRI UBvgxWVmeMoagu5fqEOoph1oSoFxWuFrweFUjnxJmT6uZrTsfF7BVgXkxdG6eYUy 2Xogcd4bPDBiRgbs0vPEog1tyyrKHOQ6p1pvksySKMPq6ULcSZ6hBpEZRpgr6Y9u 0jB3P6weQgCckx5Hd+iwvX1a+GvEuHSEqAE+j160wFyrsBS5Cir3P1WqthWaPd5I 3nH3h955PokUHPUioUhdf+8cfuP6h6K0nz1gdYI8GR8+fJHhEceT+pLLeyIxj/VM yr+bq+V7D6Cg62w3z3s9Dzg2XKpxStu1R9L1N/K8MtIGf6Uc7paL6xR27XxhmBp5 Y6bGZw0mxxFhp6AEsFWo3rwLL9Dl5DmFcfgUHHpPK5VP0pVWp48Uapx2Hi2/JzAo c1o4UkPQa/EZJBPTklmGkS1JNp/2TsEL4Fw7sew+j7DWtsJpCfk= =Ge2T -----END PGP SIGNATURE----- Merge tag 'x86_urgent_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Borislav Petkov: - Add the model number of a new, Raptor Lake CPU, to intel-family.h - Do not log spurious corrected MCEs on SKL too, due to an erratum - Clarify the path of paravirt ops patches upstream - Add an optimization to avoid writing out AMX components to sigframes when former are in init state * tag 'x86_urgent_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu: Add Raptor Lake to Intel family x86/mce: Add errata workaround for Skylake SKX37 MAINTAINERS: Add some information to PARAVIRT_OPS entry x86/fpu: Optimize out sigframe xfeatures when in init state |
||
|
Linus Torvalds
|
4d6fe79fde |
New x86 features:
* Guest API and guest kernel support for SEV live migration
* SEV and SEV-ES intra-host migration
Bugfixes and cleanups for x86:
* Fix misuse of gfn-to-pfn cache when recording guest steal time / preempted status
* Fix selftests on APICv machines
* Fix sparse warnings
* Fix detection of KVM features in CPUID
* Cleanups for bogus writes to MSR_KVM_PV_EOI_EN
* Fixes and cleanups for MSR bitmap handling
* Cleanups for INVPCID
* Make x86 KVM_SOFT_MAX_VCPUS consistent with other architectures
Bugfixes for ARM:
* Fix finalization of host stage2 mappings
* Tighten the return value of kvm_vcpu_preferred_target()
* Make sure the extraction of ESR_ELx.EC is limited to architected bits
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull more kvm updates from Paolo Bonzini:
"New x86 features:
- Guest API and guest kernel support for SEV live migration
- SEV and SEV-ES intra-host migration
Bugfixes and cleanups for x86:
- Fix misuse of gfn-to-pfn cache when recording guest steal time /
preempted status
- Fix selftests on APICv machines
- Fix sparse warnings
- Fix detection of KVM features in CPUID
- Cleanups for bogus writes to MSR_KVM_PV_EOI_EN
- Fixes and cleanups for MSR bitmap handling
- Cleanups for INVPCID
- Make x86 KVM_SOFT_MAX_VCPUS consistent with other architectures
Bugfixes for ARM:
- Fix finalization of host stage2 mappings
- Tighten the return value of kvm_vcpu_preferred_target()
- Make sure the extraction of ESR_ELx.EC is limited to architected
bits"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (34 commits)
KVM: SEV: unify cgroup cleanup code for svm_vm_migrate_from
KVM: x86: move guest_pv_has out of user_access section
KVM: x86: Drop arbitrary KVM_SOFT_MAX_VCPUS
KVM: Move INVPCID type check from vmx and svm to the common kvm_handle_invpcid()
KVM: VMX: Add a helper function to retrieve the GPR index for INVPCID, INVVPID, and INVEPT
KVM: nVMX: Clean up x2APIC MSR handling for L2
KVM: VMX: Macrofy the MSR bitmap getters and setters
KVM: nVMX: Handle dynamic MSR intercept toggling
KVM: nVMX: Query current VMCS when determining if MSR bitmaps are in use
KVM: x86: Don't update vcpu->arch.pv_eoi.msr_val when a bogus value was written to MSR_KVM_PV_EOI_EN
KVM: x86: Rename kvm_lapic_enable_pv_eoi()
KVM: x86: Make sure KVM_CPUID_FEATURES really are KVM_CPUID_FEATURES
KVM: x86: Add helper to consolidate core logic of SET_CPUID{2} flows
kvm: mmu: Use fast PF path for access tracking of huge pages when possible
KVM: x86/mmu: Properly dereference rcu-protected TDP MMU sptep iterator
KVM: x86: inhibit APICv when KVM_GUESTDBG_BLOCKIRQ active
kvm: x86: Convert return type of *is_valid_rdpmc_ecx() to bool
KVM: x86: Fix recording of guest steal time / preempted status
selftest: KVM: Add intra host migration tests
selftest: KVM: Add open sev dev helper
...
|
||
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Linus Torvalds
|
d4fa09e514 |
Merge branch 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull vm86 fix from Eric Biederman: "Just the removal of an unnecessary (and incorrect) test from a BUG_ON" * 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: signal/vm86_32: Remove pointless test in BUG_ON |
||
|
Eric W. Biederman
|
c7a9b6471c |
signal/vm86_32: Remove pointless test in BUG_ON
kernel test robot <oliver.sang@intel.com> writes[1]:
>
> Greeting,
>
> FYI, we noticed the following commit (built with gcc-9):
>
> commit:
|
||
|
Dave Jones
|
e629fc1407 |
x86/mce: Add errata workaround for Skylake SKX37
Errata SKX37 is word-for-word identical to the other errata listed in
this workaround. I happened to notice this after investigating a CMCI
storm on a Skylake host. While I can't confirm this was the root cause,
spurious corrected errors does sound like a likely suspect.
Fixes:
|
||
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Paolo Bonzini
|
f5396f2d82 |
Merge branch 'kvm-5.16-fixes' into kvm-master
* Fix misuse of gfn-to-pfn cache when recording guest steal time / preempted status * Fix selftests on APICv machines * Fix sparse warnings * Fix detection of KVM features in CPUID * Cleanups for bogus writes to MSR_KVM_PV_EOI_EN * Fixes and cleanups for MSR bitmap handling * Cleanups for INVPCID * Make x86 KVM_SOFT_MAX_VCPUS consistent with other architectures |
||
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Paul Durrant
|
760849b147 |
KVM: x86: Make sure KVM_CPUID_FEATURES really are KVM_CPUID_FEATURES
Currently when kvm_update_cpuid_runtime() runs, it assumes that the
KVM_CPUID_FEATURES leaf is located at 0x40000001. This is not true,
however, if Hyper-V support is enabled. In this case the KVM leaves will
be offset.
This patch introdues as new 'kvm_cpuid_base' field into struct
kvm_vcpu_arch to track the location of the KVM leaves and function
kvm_update_kvm_cpuid_base() (called from kvm_set_cpuid()) to locate the
leaves using the 'KVMKVMKVM\0\0\0' signature (which is now given a
definition in kvm_para.h). Adjustment of KVM_CPUID_FEATURES will hence now
target the correct leaf.
NOTE: A new for_each_possible_hypervisor_cpuid_base() macro is intoduced
into processor.h to avoid having duplicate code for the iteration
over possible hypervisor base leaves.
Signed-off-by: Paul Durrant <pdurrant@amazon.com>
Message-Id: <20211105095101.5384-3-pdurrant@amazon.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
|
||
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Paolo Bonzini
|
b9ecb9a997 |
Merge branch 'kvm-guest-sev-migration' into kvm-master
Add guest api and guest kernel support for SEV live migration. Introduces a new hypercall to notify the host of changes to the page encryption status. If the page is encrypted then it must be migrated through the SEV firmware or a helper VM sharing the key. If page is not encrypted then it can be migrated normally by userspace. This new hypercall is invoked using paravirt_ops. Conflicts: sev_active() replaced by cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT). |
||
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Ashish Kalra
|
73f1b4fece |
x86/kvm: Add kexec support for SEV Live Migration.
Reset the host's shared pages list related to kernel specific page encryption status settings before we load a new kernel by kexec. We cannot reset the complete shared pages list here as we need to retain the UEFI/OVMF firmware specific settings. The host's shared pages list is maintained for the guest to keep track of all unencrypted guest memory regions, therefore we need to explicitly mark all shared pages as encrypted again before rebooting into the new guest kernel. Signed-off-by: Ashish Kalra <ashish.kalra@amd.com> Reviewed-by: Steve Rutherford <srutherford@google.com> Message-Id: <3e051424ab839ea470f88333273d7a185006754f.1629726117.git.ashish.kalra@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
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Ashish Kalra
|
f4495615d7 |
x86/kvm: Add guest support for detecting and enabling SEV Live Migration feature.
The guest support for detecting and enabling SEV Live migration
feature uses the following logic :
- kvm_init_plaform() checks if its booted under the EFI
- If not EFI,
i) if kvm_para_has_feature(KVM_FEATURE_MIGRATION_CONTROL), issue a wrmsrl()
to enable the SEV live migration support
- If EFI,
i) If kvm_para_has_feature(KVM_FEATURE_MIGRATION_CONTROL), read
the UEFI variable which indicates OVMF support for live migration
ii) the variable indicates live migration is supported, issue a wrmsrl() to
enable the SEV live migration support
The EFI live migration check is done using a late_initcall() callback.
Also, ensure that _bss_decrypted section is marked as decrypted in the
hypervisor's guest page encryption status tracking.
Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
Reviewed-by: Steve Rutherford <srutherford@google.com>
Message-Id: <b4453e4c87103ebef12217d2505ea99a1c3e0f0f.1629726117.git.ashish.kalra@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
|
||
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Brijesh Singh
|
064ce6c550 |
mm: x86: Invoke hypercall when page encryption status is changed
Invoke a hypercall when a memory region is changed from encrypted -> decrypted and vice versa. Hypervisor needs to know the page encryption status during the guest migration. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Borislav Petkov <bp@suse.de> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: x86@kernel.org Cc: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Steve Rutherford <srutherford@google.com> Reviewed-by: Venu Busireddy <venu.busireddy@oracle.com> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Signed-off-by: Ashish Kalra <ashish.kalra@amd.com> Reviewed-by: Borislav Petkov <bp@suse.de> Message-Id: <0a237d5bb08793916c7790a3e653a2cbe7485761.1629726117.git.ashish.kalra@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
Boris Ostrovsky
|
ce2612b670 |
x86/smp: Factor out parts of native_smp_prepare_cpus()
Commit |
||
|
Peter Zijlstra
|
2105a92748 |
static_call,x86: Robustify trampoline patching
Add a few signature bytes after the static call trampoline and verify those bytes match before patching the trampoline. This avoids patching random other JMPs (such as CFI jump-table entries) instead. These bytes decode as: d: 53 push %rbx e: 43 54 rex.XB push %r12 And happen to spell "SCT". Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20211030074758.GT174703@worktop.programming.kicks-ass.net |
||
|
Linus Torvalds
|
5147da902e |
Merge branch 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull exit cleanups from Eric Biederman: "While looking at some issues related to the exit path in the kernel I found several instances where the code is not using the existing abstractions properly. This set of changes introduces force_fatal_sig a way of sending a signal and not allowing it to be caught, and corrects the misuse of the existing abstractions that I found. A lot of the misuse of the existing abstractions are silly things such as doing something after calling a no return function, rolling BUG by hand, doing more work than necessary to terminate a kernel thread, or calling do_exit(SIGKILL) instead of calling force_sig(SIGKILL). In the review a deficiency in force_fatal_sig and force_sig_seccomp where ptrace or sigaction could prevent the delivery of the signal was found. I have added a change that adds SA_IMMUTABLE to change that makes it impossible to interrupt the delivery of those signals, and allows backporting to fix force_sig_seccomp And Arnd found an issue where a function passed to kthread_run had the wrong prototype, and after my cleanup was failing to build." * 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (23 commits) soc: ti: fix wkup_m3_rproc_boot_thread return type signal: Add SA_IMMUTABLE to ensure forced siganls do not get changed signal: Replace force_sigsegv(SIGSEGV) with force_fatal_sig(SIGSEGV) exit/r8188eu: Replace the macro thread_exit with a simple return 0 exit/rtl8712: Replace the macro thread_exit with a simple return 0 exit/rtl8723bs: Replace the macro thread_exit with a simple return 0 signal/x86: In emulate_vsyscall force a signal instead of calling do_exit signal/sparc32: In setup_rt_frame and setup_fram use force_fatal_sig signal/sparc32: Exit with a fatal signal when try_to_clear_window_buffer fails exit/syscall_user_dispatch: Send ordinary signals on failure signal: Implement force_fatal_sig exit/kthread: Have kernel threads return instead of calling do_exit signal/s390: Use force_sigsegv in default_trap_handler signal/vm86_32: Properly send SIGSEGV when the vm86 state cannot be saved. signal/vm86_32: Replace open coded BUG_ON with an actual BUG_ON signal/sparc: In setup_tsb_params convert open coded BUG into BUG signal/powerpc: On swapcontext failure force SIGSEGV signal/sh: Use force_sig(SIGKILL) instead of do_group_exit(SIGKILL) signal/mips: Update (_save|_restore)_fp_context to fail with -EFAULT signal/sparc32: Remove unreachable do_exit in do_sparc_fault ... |
||
|
Linus Torvalds
|
bf98ecbbae |
xen: branch for v5.16-rc1
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRTLbB6QfY48x44uB6AXGG7T9hjvgUCYYp8HgAKCRCAXGG7T9hj vmuVAP4whjbyIi4IxYEOnE6On0aD0AgUMiFa7QXrDZi6NXUQIwEAnggLFe+rEG5C Fwi/cEXSHrRgveqrgD4GYEr6l0GTxwM= =/fMa -----END PGP SIGNATURE----- Merge tag 'for-linus-5.16b-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from Juergen Gross: - a series to speed up the boot of Xen PV guests - some cleanups in Xen related code - replacement of license texts with the appropriate SPDX headers and fixing of wrong SPDX headers in Xen header files - a small series making paravirtualized interrupt masking much simpler and at the same time removing complaints of objtool - a fix for Xen ballooning hogging workqueues for too long - enablement of the Xen pciback driver for Arm - some further small fixes/enhancements * tag 'for-linus-5.16b-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (22 commits) xen/balloon: fix unused-variable warning xen/balloon: rename alloc/free_xenballooned_pages xen/balloon: add late_initcall_sync() for initial ballooning done x86/xen: remove 32-bit awareness from startup_xen xen: remove highmem remnants xen: allow pv-only hypercalls only with CONFIG_XEN_PV x86/xen: remove 32-bit pv leftovers xen-pciback: allow compiling on other archs than x86 x86/xen: switch initial pvops IRQ functions to dummy ones x86/xen: remove xen_have_vcpu_info_placement flag x86/pvh: add prototype for xen_pvh_init() xen: Fix implicit type conversion xen: fix wrong SPDX headers of Xen related headers xen/pvcalls-back: Remove redundant 'flush_workqueue()' calls x86/xen: Remove redundant irq_enter/exit() invocations xen-pciback: Fix return in pm_ctrl_init() xen/x86: restrict PV Dom0 identity mapping xen/x86: there's no highmem anymore in PV mode xen/x86: adjust handling of the L3 user vsyscall special page table xen/x86: adjust xen_set_fixmap() ... |
||
|
Linus Torvalds
|
59a2ceeef6 |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton: "87 patches. Subsystems affected by this patch series: mm (pagecache and hugetlb), procfs, misc, MAINTAINERS, lib, checkpatch, binfmt, kallsyms, ramfs, init, codafs, nilfs2, hfs, crash_dump, signals, seq_file, fork, sysvfs, kcov, gdb, resource, selftests, and ipc" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (87 commits) ipc/ipc_sysctl.c: remove fallback for !CONFIG_PROC_SYSCTL ipc: check checkpoint_restore_ns_capable() to modify C/R proc files selftests/kselftest/runner/run_one(): allow running non-executable files virtio-mem: disallow mapping virtio-mem memory via /dev/mem kernel/resource: disallow access to exclusive system RAM regions kernel/resource: clean up and optimize iomem_is_exclusive() scripts/gdb: handle split debug for vmlinux kcov: replace local_irq_save() with a local_lock_t kcov: avoid enable+disable interrupts if !in_task() kcov: allocate per-CPU memory on the relevant node Documentation/kcov: define `ip' in the example Documentation/kcov: include types.h in the example sysv: use BUILD_BUG_ON instead of runtime check kernel/fork.c: unshare(): use swap() to make code cleaner seq_file: fix passing wrong private data seq_file: move seq_escape() to a header signal: remove duplicate include in signal.h crash_dump: remove duplicate include in crash_dump.h crash_dump: fix boolreturn.cocci warning hfs/hfsplus: use WARN_ON for sanity check ... |
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|
Kefeng Wang
|
b9ad8fe7b8 |
sections: move is_kernel_inittext() into sections.h
The is_kernel_inittext() and init_kernel_text() are with same functionality, let's just keep is_kernel_inittext() and move it into sections.h, then update all the callers. Link: https://lkml.kernel.org/r/20210930071143.63410-5-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Alexander Potapenko <glider@google.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Paul Mackerras <paulus@samba.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
David Hildenbrand
|
cc5f2704c9 |
proc/vmcore: convert oldmem_pfn_is_ram callback to more generic vmcore callbacks
Let's support multiple registered callbacks, making sure that registering vmcore callbacks cannot fail. Make the callback return a bool instead of an int, handling how to deal with errors internally. Drop unused HAVE_OLDMEM_PFN_IS_RAM. We soon want to make use of this infrastructure from other drivers: virtio-mem, registering one callback for each virtio-mem device, to prevent reading unplugged virtio-mem memory. Handle it via a generic vmcore_cb structure, prepared for future extensions: for example, once we support virtio-mem on s390x where the vmcore is completely constructed in the second kernel, we want to detect and add plugged virtio-mem memory ranges to the vmcore in order for them to get dumped properly. Handle corner cases that are unexpected and shouldn't happen in sane setups: registering a callback after the vmcore has already been opened (warn only) and unregistering a callback after the vmcore has already been opened (warn and essentially read only zeroes from that point on). Link: https://lkml.kernel.org/r/20211005121430.30136-6-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Baoquan He <bhe@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Dave Young <dyoung@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com> Cc: Stefano Stabellini <sstabellini@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
0c5c62ddf8 |
pci-v5.16-changes
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Merge tag 'pci-v5.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Conserve IRQs by setting up portdrv IRQs only when there are users
(Jan Kiszka)
- Rework and simplify _OSC negotiation for control of PCIe features
(Joerg Roedel)
- Remove struct pci_dev.driver pointer since it's redundant with the
struct device.driver pointer (Uwe Kleine-König)
Resource management:
- Coalesce contiguous host bridge apertures from _CRS to accommodate
BARs that cover more than one aperture (Kai-Heng Feng)
Sysfs:
- Check CAP_SYS_ADMIN before parsing user input (Krzysztof
Wilczyński)
- Return -EINVAL consistently from "store" functions (Krzysztof
Wilczyński)
- Use sysfs_emit() in endpoint "show" functions to avoid buffer
overruns (Kunihiko Hayashi)
PCIe native device hotplug:
- Ignore Link Down/Up caused by resets during error recovery so
endpoint drivers can remain bound to the device (Lukas Wunner)
Virtualization:
- Avoid bus resets on Atheros QCA6174, where they hang the device
(Ingmar Klein)
- Work around Pericom PI7C9X2G switch packet drop erratum by using
store and forward mode instead of cut-through (Nathan Rossi)
- Avoid trying to enable AtomicOps on VFs; the PF setting applies to
all VFs (Selvin Xavier)
MSI:
- Document that /sys/bus/pci/devices/.../irq contains the legacy INTx
interrupt or the IRQ of the first MSI (not MSI-X) vector (Barry
Song)
VPD:
- Add pci_read_vpd_any() and pci_write_vpd_any() to access anywhere
in the possible VPD space; use these to simplify the cxgb3 driver
(Heiner Kallweit)
Peer-to-peer DMA:
- Add (not subtract) the bus offset when calculating DMA address
(Wang Lu)
ASPM:
- Re-enable LTR at Downstream Ports so they don't report Unsupported
Requests when reset or hot-added devices send LTR messages
(Mingchuang Qiao)
Apple PCIe controller driver:
- Add driver for Apple M1 PCIe controller (Alyssa Rosenzweig, Marc
Zyngier)
Cadence PCIe controller driver:
- Return success when probe succeeds instead of falling into error
path (Li Chen)
HiSilicon Kirin PCIe controller driver:
- Reorganize PHY logic and add support for external PHY drivers
(Mauro Carvalho Chehab)
- Support PERST# GPIOs for HiKey970 external PEX 8606 bridge (Mauro
Carvalho Chehab)
- Add Kirin 970 support (Mauro Carvalho Chehab)
- Make driver removable (Mauro Carvalho Chehab)
Intel VMD host bridge driver:
- If IOMMU supports interrupt remapping, leave VMD MSI-X remapping
enabled (Adrian Huang)
- Number each controller so we can tell them apart in
/proc/interrupts (Chunguang Xu)
- Avoid building on UML because VMD depends on x86 bare metal APIs
(Johannes Berg)
Marvell Aardvark PCIe controller driver:
- Define macros for PCI_EXP_DEVCTL_PAYLOAD_* (Pali Rohár)
- Set Max Payload Size to 512 bytes per Marvell spec (Pali Rohár)
- Downgrade PIO Response Status messages to debug level (Marek Behún)
- Preserve CRS SV (Config Request Retry Software Visibility) bit in
emulated Root Control register (Pali Rohár)
- Fix issue in configuring reference clock (Pali Rohár)
- Don't clear status bits for masked interrupts (Pali Rohár)
- Don't mask unused interrupts (Pali Rohár)
- Avoid code repetition in advk_pcie_rd_conf() (Marek Behún)
- Retry config accesses on CRS response (Pali Rohár)
- Simplify emulated Root Capabilities initialization (Pali Rohár)
- Fix several link training issues (Pali Rohár)
- Fix link-up checking via LTSSM (Pali Rohár)
- Fix reporting of Data Link Layer Link Active (Pali Rohár)
- Fix emulation of W1C bits (Marek Behún)
- Fix MSI domain .alloc() method to return zero on success (Marek
Behún)
- Read entire 16-bit MSI vector in MSI handler, not just low 8 bits
(Marek Behún)
- Clear Root Port I/O Space, Memory Space, and Bus Master Enable bits
at startup; PCI core will set those as necessary (Pali Rohár)
- When operating as a Root Port, set class code to "PCI Bridge"
instead of the default "Mass Storage Controller" (Pali Rohár)
- Add emulation for PCI_BRIDGE_CTL_BUS_RESET since aardvark doesn't
implement this per spec (Pali Rohár)
- Add emulation of option ROM BAR since aardvark doesn't implement
this per spec (Pali Rohár)
MediaTek MT7621 PCIe controller driver:
- Add MediaTek MT7621 PCIe host controller driver and DT binding
(Sergio Paracuellos)
Qualcomm PCIe controller driver:
- Add SC8180x compatible string (Bjorn Andersson)
- Add endpoint controller driver and DT binding (Manivannan
Sadhasivam)
- Restructure to use of_device_get_match_data() (Prasad Malisetty)
- Add SC7280-specific pcie_1_pipe_clk_src handling (Prasad Malisetty)
Renesas R-Car PCIe controller driver:
- Remove unnecessary includes (Geert Uytterhoeven)
Rockchip DesignWare PCIe controller driver:
- Add DT binding (Simon Xue)
Socionext UniPhier Pro5 controller driver:
- Serialize INTx masking/unmasking (Kunihiko Hayashi)
Synopsys DesignWare PCIe controller driver:
- Run dwc .host_init() method before registering MSI interrupt
handler so we can deal with pending interrupts left by bootloader
(Bjorn Andersson)
- Clean up Kconfig dependencies (Andy Shevchenko)
- Export symbols to allow more modular drivers (Luca Ceresoli)
TI DRA7xx PCIe controller driver:
- Allow host and endpoint drivers to be modules (Luca Ceresoli)
- Enable external clock if present (Luca Ceresoli)
TI J721E PCIe driver:
- Disable PHY when probe fails after initializing it (Christophe
JAILLET)
MicroSemi Switchtec management driver:
- Return error to application when command execution fails because an
out-of-band reset has cleared the device BARs, Memory Space Enable,
etc (Kelvin Cao)
- Fix MRPC error status handling issue (Kelvin Cao)
- Mask out other bits when reading of management VEP instance ID
(Kelvin Cao)
- Return EOPNOTSUPP instead of ENOTSUPP from sysfs show functions
(Kelvin Cao)
- Add check of event support (Logan Gunthorpe)
Miscellaneous:
- Remove unused pci_pool wrappers, which have been replaced by
dma_pool (Cai Huoqing)
- Use 'unsigned int' instead of bare 'unsigned' (Krzysztof
Wilczyński)
- Use kstrtobool() directly, sans strtobool() wrapper (Krzysztof
Wilczyński)
- Fix some sscanf(), sprintf() format mismatches (Krzysztof
Wilczyński)
- Update PCI subsystem information in MAINTAINERS (Krzysztof
Wilczyński)
- Correct some misspellings (Krzysztof Wilczyński)"
* tag 'pci-v5.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (137 commits)
PCI: Add ACS quirk for Pericom PI7C9X2G switches
PCI: apple: Configure RID to SID mapper on device addition
iommu/dart: Exclude MSI doorbell from PCIe device IOVA range
PCI: apple: Implement MSI support
PCI: apple: Add INTx and per-port interrupt support
PCI: kirin: Allow removing the driver
PCI: kirin: De-init the dwc driver
PCI: kirin: Disable clkreq during poweroff sequence
PCI: kirin: Move the power-off code to a common routine
PCI: kirin: Add power_off support for Kirin 960 PHY
PCI: kirin: Allow building it as a module
PCI: kirin: Add MODULE_* macros
PCI: kirin: Add Kirin 970 compatible
PCI: kirin: Support PERST# GPIOs for HiKey970 external PEX 8606 bridge
PCI: apple: Set up reference clocks when probing
PCI: apple: Add initial hardware bring-up
PCI: of: Allow matching of an interrupt-map local to a PCI device
of/irq: Allow matching of an interrupt-map local to an interrupt controller
irqdomain: Make of_phandle_args_to_fwspec() generally available
PCI: Do not enable AtomicOps on VFs
...
|
||
|
Linus Torvalds
|
512b7931ad |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton: "257 patches. Subsystems affected by this patch series: scripts, ocfs2, vfs, and mm (slab-generic, slab, slub, kconfig, dax, kasan, debug, pagecache, gup, swap, memcg, pagemap, mprotect, mremap, iomap, tracing, vmalloc, pagealloc, memory-failure, hugetlb, userfaultfd, vmscan, tools, memblock, oom-kill, hugetlbfs, migration, thp, readahead, nommu, ksm, vmstat, madvise, memory-hotplug, rmap, zsmalloc, highmem, zram, cleanups, kfence, and damon)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (257 commits) mm/damon: remove return value from before_terminate callback mm/damon: fix a few spelling mistakes in comments and a pr_debug message mm/damon: simplify stop mechanism Docs/admin-guide/mm/pagemap: wordsmith page flags descriptions Docs/admin-guide/mm/damon/start: simplify the content Docs/admin-guide/mm/damon/start: fix a wrong link Docs/admin-guide/mm/damon/start: fix wrong example commands mm/damon/dbgfs: add adaptive_targets list check before enable monitor_on mm/damon: remove unnecessary variable initialization Documentation/admin-guide/mm/damon: add a document for DAMON_RECLAIM mm/damon: introduce DAMON-based Reclamation (DAMON_RECLAIM) selftests/damon: support watermarks mm/damon/dbgfs: support watermarks mm/damon/schemes: activate schemes based on a watermarks mechanism tools/selftests/damon: update for regions prioritization of schemes mm/damon/dbgfs: support prioritization weights mm/damon/vaddr,paddr: support pageout prioritization mm/damon/schemes: prioritize regions within the quotas mm/damon/selftests: support schemes quotas mm/damon/dbgfs: support quotas of schemes ... |
||
|
Mike Rapoport
|
4421cca0a3 |
memblock: use memblock_free for freeing virtual pointers
Rename memblock_free_ptr() to memblock_free() and use memblock_free()
when freeing a virtual pointer so that memblock_free() will be a
counterpart of memblock_alloc()
The callers are updated with the below semantic patch and manual
addition of (void *) casting to pointers that are represented by
unsigned long variables.
@@
identifier vaddr;
expression size;
@@
(
- memblock_phys_free(__pa(vaddr), size);
+ memblock_free(vaddr, size);
|
- memblock_free_ptr(vaddr, size);
+ memblock_free(vaddr, size);
)
[sfr@canb.auug.org.au: fixup]
Link: https://lkml.kernel.org/r/20211018192940.3d1d532f@canb.auug.org.au
Link: https://lkml.kernel.org/r/20210930185031.18648-7-rppt@kernel.org
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Juergen Gross <jgross@suse.com>
Cc: Shahab Vahedi <Shahab.Vahedi@synopsys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Mike Rapoport
|
3ecc68349b |
memblock: rename memblock_free to memblock_phys_free
Since memblock_free() operates on a physical range, make its name
reflect it and rename it to memblock_phys_free(), so it will be a
logical counterpart to memblock_phys_alloc().
The callers are updated with the below semantic patch:
@@
expression addr;
expression size;
@@
- memblock_free(addr, size);
+ memblock_phys_free(addr, size);
Link: https://lkml.kernel.org/r/20210930185031.18648-6-rppt@kernel.org
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Juergen Gross <jgross@suse.com>
Cc: Shahab Vahedi <Shahab.Vahedi@synopsys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Linus Torvalds
|
95faf6ba65 |
Driver core changes for 5.16-rc1
Here is the big set of driver core changes for 5.16-rc1.
All of these have been in linux-next for a while now with no reported
problems.
Included in here are:
- big update and cleanup of the sysfs abi documentation files
and scripts from Mauro. We are almost at the place where we
can properly check that the running kernel's sysfs abi is
documented fully.
- firmware loader updates
- dyndbg updates
- kernfs cleanups and fixes from Christoph
- device property updates
- component fix
- other minor driver core cleanups and fixes
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the big set of driver core changes for 5.16-rc1.
All of these have been in linux-next for a while now with no reported
problems.
Included in here are:
- big update and cleanup of the sysfs abi documentation files and
scripts from Mauro. We are almost at the place where we can
properly check that the running kernel's sysfs abi is documented
fully.
- firmware loader updates
- dyndbg updates
- kernfs cleanups and fixes from Christoph
- device property updates
- component fix
- other minor driver core cleanups and fixes"
* tag 'driver-core-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (122 commits)
device property: Drop redundant NULL checks
x86/build: Tuck away built-in firmware under FW_LOADER
vmlinux.lds.h: wrap built-in firmware support under FW_LOADER
firmware_loader: move struct builtin_fw to the only place used
x86/microcode: Use the firmware_loader built-in API
firmware_loader: remove old DECLARE_BUILTIN_FIRMWARE()
firmware_loader: formalize built-in firmware API
component: do not leave master devres group open after bind
dyndbg: refine verbosity 1-4 summary-detail
gpiolib: acpi: Replace custom code with device_match_acpi_handle()
i2c: acpi: Replace custom function with device_match_acpi_handle()
driver core: Provide device_match_acpi_handle() helper
dyndbg: fix spurious vNpr_info change
dyndbg: no vpr-info on empty queries
dyndbg: vpr-info on remove-module complete, not starting
device property: Add missed header in fwnode.h
Documentation: dyndbg: Improve cli param examples
dyndbg: Remove support for ddebug_query param
dyndbg: make dyndbg a known cli param
dyndbg: show module in vpr-info in dd-exec-queries
...
|
||
|
Dave Hansen
|
30d02551ba |
x86/fpu: Optimize out sigframe xfeatures when in init state
tl;dr: AMX state is ~8k. Signal frames can have space for this
~8k and each signal entry writes out all 8k even if it is zeros.
Skip writing zeros for AMX to speed up signal delivery by about
4% overall when AMX is in its init state.
This is a user-visible change to the sigframe ABI.
== Hardware XSAVE Background ==
XSAVE state components may be tracked by the processor as being
in their initial configuration. Software can detect which
features are in this configuration by looking at the XSTATE_BV
field in an XSAVE buffer or with the XGETBV(1) instruction.
Both the XSAVE and XSAVEOPT instructions enumerate features s
being in the initial configuration via the XSTATE_BV field in the
XSAVE header, However, XSAVEOPT declines to actually write
features in their initial configuration to the buffer. XSAVE
writes the feature unconditionally, regardless of whether it is
in the initial configuration or not.
Basically, XSAVE users never need to inspect XSTATE_BV to
determine if the feature has been written to the buffer.
XSAVEOPT users *do* need to inspect XSTATE_BV. They might also
need to clear out the buffer if they want to make an isolated
change to the state, like modifying one register.
== Software Signal / XSAVE Background ==
Signal frames have historically been written with XSAVE itself.
Each state is written in its entirety, regardless of being in its
initial configuration.
In other words, the signal frame ABI uses the XSAVE behavior, not
the XSAVEOPT behavior.
== Problem ==
This means that any application which has acquired permission to
use AMX via ARCH_REQ_XCOMP_PERM will write 8k of state to the
signal frame. This 8k write will occur even when AMX was in its
initial configuration and software *knows* this because of
XSTATE_BV.
This problem also exists to a lesser degree with AVX-512 and its
2k of state. However, AVX-512 use does not require
ARCH_REQ_XCOMP_PERM and is more likely to have existing users
which would be impacted by any change in behavior.
== Solution ==
Stop writing out AMX xfeatures which are in their initial state
to the signal frame. This effectively makes the signal frame
XSAVE buffer look as if it were written with a combination of
XSAVEOPT and XSAVE behavior. Userspace which handles XSAVEOPT-
style buffers should be able to handle this naturally.
For now, include only the AMX xfeatures: XTILE and XTILEDATA in
this new behavior. These require new ABI to use anyway, which
makes their users very unlikely to be broken. This XSAVEOPT-like
behavior should be expected for all future dynamic xfeatures. It
may also be extended to legacy features like AVX-512 in the
future.
Only attempt this optimization on systems with dynamic features.
Disable dynamic feature support (XFD) if XGETBV1 is unavailable
by adding a CPUID dependency.
This has been measured to reduce the *overall* cycle cost of
signal delivery by about 4%.
Fixes:
|
||
|
Linus Torvalds
|
dcd68326d2 |
Devicetree updates for v5.16:
- Convert /reserved-memory bindings to schemas - Convert a bunch of NFC bindings to schemas - Convert bindings to schema: Xilinx USB, Freescale DDR controller, Arm CCI-400, UBlox Neo-6M, 1-Wire GPIO, MSI controller, ASpeed LPC, OMAP and Inside-Secure HWRNG, register-bit-led, OV5640, Silead GSL1680, Elan ekth3000, Marvell bluetooth, TI wlcore, TI bluetooth, ESP ESP8089, tlm,trusted-foundations, Microchip cap11xx, Ralink SoCs and boards, and TI sysc - New binding schemas for: msi-ranges, Aspeed UART routing controller, palmbus, Xylon LogiCVC display controller, Mediatek's MT7621 SDRAM memory controller, and Apple M1 PCIe host - Run schema checks for %.dtb targets - Improve build time when using DT_SCHEMA_FILES - Improve error message when dtschema is not found - Various doc reference fixes in MAINTAINERS - Convert architectures to common CPU h/w ID parsing function of_get_cpu_hwid(). - Allow for empty NUMA node IDs which may be hotplugged - Cleanup of __fdt_scan_reserved_mem() - Constify device_node parameters - Update dtc to upstream v1.6.1-19-g0a3a9d3449c8. Adds new checks 'node_name_vs_property_name' and 'interrupt_map'. - Enable dtc 'unit_address_format' warning by default - Fix unittest EXPECT text for gpio hog errors -----BEGIN PGP SIGNATURE----- iQJEBAABCgAuFiEEktVUI4SxYhzZyEuo+vtdtY28YcMFAmGBrj8QHHJvYmhAa2Vy bmVsLm9yZwAKCRD6+121jbxhw3M1D/9gpaVBqp+Q5hZZLWOjz/WkAsExZ71N/8Lh rn64XWYQNJ6R1PINkBtlooJy6wTCIMfNs3IEmkAVEXVEj1Nvu7uEZwYbb96B4dJ4 EiMv/Vz0EphoqnBvICT86XfNZduP1sZ5M11pdv2dNvwJrEvvi98VLDvSucvxorn8 sm5jsqWOAwroiCR+u8BWW3qH3sugL1BOAwraMoUbosZAo0SpNH4WBdcBz4+v8lUS 5N8Y8Q6dB6fEqdbVpzMblN2B9c/TEb1VYaeGXRUyQsIUQJajX3xnR8RDnTKLBtsS FAKGQORemLwVzBVKeZKbhlqXAJbl701LuKHRLiVerb9UGi+tk4AX9Rgg1Whrp7w4 UYi+k4Ozus1vDaKsemB1voabSgYYY+aNTRezltdtPz0a+eQJWPUt1xQB5m68cGO4 TZI+KfExxyGVa8iDgv4AWhvXqbR3+PUTUvel2xEIkRscWmMjXF/+oQXy8QYn2Aok S9750/3EUQCbKi9ZUjPLRzd5CuPP2E97i8V2WdOgRse3+H7pPg5IcEq7oQYe9A62 SnRFjPz1X5g4Hh3bRVmcAGmDzbZJrl9dULvYVdiUWiqzfmHxN7MXO9FIxv3NKVfp 6jgr5vVVi1ShDnCh3ns4mYUwQ7j72dsONyklbVBbNtGjeeZcv5MEeg9ZAoVvO+lh 9DNNSGSd2g== =dQa6 -----END PGP SIGNATURE----- Merge tag 'devicetree-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: - Convert /reserved-memory bindings to schemas - Convert a bunch of NFC bindings to schemas - Convert bindings to schema: Xilinx USB, Freescale DDR controller, Arm CCI-400, UBlox Neo-6M, 1-Wire GPIO, MSI controller, ASpeed LPC, OMAP and Inside-Secure HWRNG, register-bit-led, OV5640, Silead GSL1680, Elan ekth3000, Marvell bluetooth, TI wlcore, TI bluetooth, ESP ESP8089, tlm,trusted-foundations, Microchip cap11xx, Ralink SoCs and boards, and TI sysc - New binding schemas for: msi-ranges, Aspeed UART routing controller, palmbus, Xylon LogiCVC display controller, Mediatek's MT7621 SDRAM memory controller, and Apple M1 PCIe host - Run schema checks for %.dtb targets - Improve build time when using DT_SCHEMA_FILES - Improve error message when dtschema is not found - Various doc reference fixes in MAINTAINERS - Convert architectures to common CPU h/w ID parsing function of_get_cpu_hwid(). - Allow for empty NUMA node IDs which may be hotplugged - Cleanup of __fdt_scan_reserved_mem() - Constify device_node parameters - Update dtc to upstream v1.6.1-19-g0a3a9d3449c8. Adds new checks 'node_name_vs_property_name' and 'interrupt_map'. - Enable dtc 'unit_address_format' warning by default - Fix unittest EXPECT text for gpio hog errors * tag 'devicetree-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (97 commits) dt-bindings: net: ti,bluetooth: Document default max-speed dt-bindings: pci: rcar-pci-ep: Document r8a7795 dt-bindings: net: qcom,ipa: IPA does support up to two iommus of/fdt: Remove of_scan_flat_dt() usage for __fdt_scan_reserved_mem() of: unittest: document intentional interrupt-map provider build warning of: unittest: fix EXPECT text for gpio hog errors of/unittest: Disable new dtc node_name_vs_property_name and interrupt_map warnings scripts/dtc: Update to upstream version v1.6.1-19-g0a3a9d3449c8 dt-bindings: arm: firmware: tlm,trusted-foundations: Convert txt bindings to yaml dt-bindings: display: tilcd: Fix endpoint addressing in example dt-bindings: input: microchip,cap11xx: Convert txt bindings to yaml dt-bindings: ufs: exynos-ufs: add exynosautov9 compatible dt-bindings: ufs: exynos-ufs: add io-coherency property dt-bindings: mips: convert Ralink SoCs and boards to schema dt-bindings: display: xilinx: Fix example with psgtr dt-bindings: net: nfc: nxp,pn544: Convert txt bindings to yaml dt-bindings: Add a help message when dtschema tools are missing dt-bindings: bus: ti-sysc: Update to use yaml binding dt-bindings: sram: Allow numbers in sram region node name dt-bindings: display: Document the Xylon LogiCVC display controller ... |
||
|
Linus Torvalds
|
56d3375448 |
drm for 5.16-rc1
core: - improve dma_fence, lease and resv documentation - shmem-helpers: allocate WC pages on x86, use vmf_insert_pin - sched fixes/improvements - allow empty drm leases - add dma resv iterator - add more DP 2.0 headers - DP MST helper improvements for DP2.0 dma-buf: - avoid warnings, remove fence trace macros bridge: - new helper to get rid of panels - probe improvements for it66121 - enable DSI EOTP for anx7625 fbdev: - efifb: release runtime PM on destroy ttm: - kerneldoc switch - helper to clear all DMA mappings - pool shrinker optimizaton - remove ttm_tt_destroy_common - update ttm_move_memcpy for async use panel: - add new panel-edp driver amdgpu: - Initial DP 2.0 support - Initial USB4 DP tunnelling support - Aldebaran MCE support - Modifier support for DCC image stores for GFX 10.3 - Display rework for better FP code handling - Yellow Carp/Cyan Skillfish updates - Cyan Skillfish display support - convert vega/navi to IP discovery asic enumeration - validate IP discovery table - RAS improvements - Lots of fixes i915: - DG1 PCI IDs + LMEM discovery/placement - DG1 GuC submission by default - ADL-S PCI IDs updated + enabled by default - ADL-P (XE_LPD) fixed and updates - DG2 display fixes - PXP protected object support for Gen12 integrated - expose multi-LRC submission interface for GuC - export logical engine instance to user - Disable engine bonding on Gen12+ - PSR cleanup - PSR2 selective fetch by default - DP 2.0 prep work - VESA vendor block + MSO use of it - FBC refactor - try again to fix fast-narrow vs slow-wide eDP training - use THP when IOMMU enabled - LMEM backup/restore for suspend/resume - locking simplification - GuC major reworking - async flip VT-D workaround changes - DP link training improvements - misc display refactorings bochs: - new PCI ID rcar-du: - Non-contiguious buffer import support for rcar-du - r8a779a0 support prep omapdrm: - COMPILE_TEST fixes sti: - COMPILE_TEST fixes msm: - fence ordering improvements - eDP support in DP sub-driver - dpu irq handling cleanup - CRC support for making igt happy - NO_CONNECTOR bridge support - dsi: 14nm phy support for msm8953 - mdp5: msm8x53, sdm450, sdm632 support stm: - layer alpha + zpo support v3d: - fix Vulkan CTS failure - support multiple sync objects gud: - add R8/RGB332/RGB888 pixel formats vc4: - convert to new bridge helpers vgem: - use shmem helpers virtio: - support mapping exported vram zte: - remove obsolete driver rockchip: - use bridge attach no connector for LVDS/RGB -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmGByPYACgkQDHTzWXnE hr6fxA//cXUvTHlEtF7UJDBRAYv+9lXH39NbGYU4aLJuBNlZztCuUi5JOSyDFDH1 N9VI5biVseev2PEnCzJUubWxTqbUO7FBQTw0TyvZ4Eqn+UZMuFeo0dvdKZRAkvjV VHSUc0fm0+WSYanKUK7XK0fwG8aE6JVyYngzgKPSjifhszTdiiRsbU21iTinFhkS rgh3HEVELp+LqfoG4qzAYqFUjYqUjvCjd/hX/UkzCII8ZXKr38/4127e95443WOk +jes0gWGJe9TvSDrqo9TMx4qukcOniINFUvnzoD2RhOS+Jzr/i5rBh51Xy92g3NO Q7hy6byZdk/ZO/MXCDQ2giUOkBiqn5fQjlRGQp4iAZYw9pb3HU+/xrTq0BWVWd8o /vmzZYEKKU/sCGpxVDMZxsHV3mXIuVBvuZq6bjmSGcybgOBCiDx5F/Rum4nY2yHp lr3cuc0HP3m3f4b/HVvACO4tGd1nDDpVcon7CuhBB7HB7t6Zl9u18qc/qFw0tCTh 3sgAhno6XFXtPFcSX2KAeeg0mhKDKKrsOnq5y3bDRr05Z0jLocJk95aXEKs6em4j gbyHwNaX3CHtiCnFn2/5169+n1K7zqHBtVSGmQlmFDv55rcdx7L3Spk7tCahQeSQ ur24r+sEggm8d5Wjl+MYq6wW3oP31s04JFaeV6oCkaSp1wS+alg= =jdhH -----END PGP SIGNATURE----- Merge tag 'drm-next-2021-11-03' of git://anongit.freedesktop.org/drm/drm Pull drm updates from Dave Airlie: "Summary below. i915 starts to add support for DG2 GPUs, enables DG1 and ADL-S support by default, lots of work to enable DisplayPort 2.0 across drivers. Lots of documentation updates and fixes across the board. core: - improve dma_fence, lease and resv documentation - shmem-helpers: allocate WC pages on x86, use vmf_insert_pin - sched fixes/improvements - allow empty drm leases - add dma resv iterator - add more DP 2.0 headers - DP MST helper improvements for DP2.0 dma-buf: - avoid warnings, remove fence trace macros bridge: - new helper to get rid of panels - probe improvements for it66121 - enable DSI EOTP for anx7625 fbdev: - efifb: release runtime PM on destroy ttm: - kerneldoc switch - helper to clear all DMA mappings - pool shrinker optimizaton - remove ttm_tt_destroy_common - update ttm_move_memcpy for async use panel: - add new panel-edp driver amdgpu: - Initial DP 2.0 support - Initial USB4 DP tunnelling support - Aldebaran MCE support - Modifier support for DCC image stores for GFX 10.3 - Display rework for better FP code handling - Yellow Carp/Cyan Skillfish updates - Cyan Skillfish display support - convert vega/navi to IP discovery asic enumeration - validate IP discovery table - RAS improvements - Lots of fixes i915: - DG1 PCI IDs + LMEM discovery/placement - DG1 GuC submission by default - ADL-S PCI IDs updated + enabled by default - ADL-P (XE_LPD) fixed and updates - DG2 display fixes - PXP protected object support for Gen12 integrated - expose multi-LRC submission interface for GuC - export logical engine instance to user - Disable engine bonding on Gen12+ - PSR cleanup - PSR2 selective fetch by default - DP 2.0 prep work - VESA vendor block + MSO use of it - FBC refactor - try again to fix fast-narrow vs slow-wide eDP training - use THP when IOMMU enabled - LMEM backup/restore for suspend/resume - locking simplification - GuC major reworking - async flip VT-D workaround changes - DP link training improvements - misc display refactorings bochs: - new PCI ID rcar-du: - Non-contiguious buffer import support for rcar-du - r8a779a0 support prep omapdrm: - COMPILE_TEST fixes sti: - COMPILE_TEST fixes msm: - fence ordering improvements - eDP support in DP sub-driver - dpu irq handling cleanup - CRC support for making igt happy - NO_CONNECTOR bridge support - dsi: 14nm phy support for msm8953 - mdp5: msm8x53, sdm450, sdm632 support stm: - layer alpha + zpo support v3d: - fix Vulkan CTS failure - support multiple sync objects gud: - add R8/RGB332/RGB888 pixel formats vc4: - convert to new bridge helpers vgem: - use shmem helpers virtio: - support mapping exported vram zte: - remove obsolete driver rockchip: - use bridge attach no connector for LVDS/RGB" * tag 'drm-next-2021-11-03' of git://anongit.freedesktop.org/drm/drm: (1259 commits) drm/amdgpu/gmc6: fix DMA mask from 44 to 40 bits drm/amd/display: MST support for DPIA drm/amdgpu: Fix even more out of bound writes from debugfs drm/amdgpu/discovery: add SDMA IP instance info for soc15 parts drm/amdgpu/discovery: add UVD/VCN IP instance info for soc15 parts drm/amdgpu/UAPI: rearrange header to better align related items drm/amd/display: Enable dpia in dmub only for DCN31 B0 drm/amd/display: Fix USB4 hot plug crash issue drm/amd/display: Fix deadlock when falling back to v2 from v3 drm/amd/display: Fallback to clocks which meet requested voltage on DCN31 drm/amd/display: move FPU associated DCN301 code to DML folder drm/amd/display: fix link training regression for 1 or 2 lane drm/amd/display: add two lane settings training options drm/amd/display: decouple hw_lane_settings from dpcd_lane_settings drm/amd/display: implement decide lane settings drm/amd/display: adopt DP2.0 LT SCR revision 8 drm/amd/display: FEC configuration for dpia links in MST mode drm/amd/display: FEC configuration for dpia links drm/amd/display: Add workaround flag for EDID read on certain docks drm/amd/display: Set phy_mux_sel bit in dmub scratch register ... |
||
|
Linus Torvalds
|
c0d6586afa |
ACPI updates for 5.16-rc1
- Update the ACPICA code in the kernel to upstream revision 20210930
including the following changes:
* Fix system-wide resume issue caused by evaluating control
methods too early in the resume path (Rafael Wysocki).
* Add support for Windows 2020 _OSI string (Mario Limonciello).
* Add Generic Port Affinity type for SRAT (Alison Schofield).
* Add disassembly support for the NHLT ACPI table (Bob Moore).
- Avoid flushing caches before entering C3 type of idle states on
AMD processors (Deepak Sharma).
- Avoid enumerating CPUs that are not present and not online-capable
according to the platform firmware (Mario Limonciello).
- Add DMI-based mechanism to quirk IRQ overrides and use it for two
platforms (Hui Wang).
- Change the configuration of unused ACPI device objects to reflect
the D3cold power state after enumerating devices (Rafael Wysocki).
- Update MAINTAINERS information regarding ACPI (Rafael Wysocki).
- Fix typo in ACPI Kconfig (Masanari Iid).
- Use sysfs_emit() instead of snprintf() in some places (Qing Wang).
- Make the association of ACPI device objects with PCI devices more
straightforward and simplify the code doing that for all devices
in general (Rafael Wysocki).
- Use acpi_device_adr() in acpi_find_child_device() instead of
evaluating _ADR (Rafael Wysocki).
- Drop duplicate device IDs from PNP device IDs list (Krzysztof
Kozlowski).
- Allow acpi_idle_play_dead() to use C3 on AMD processors (Richard
Gong).
- Use ACPI_COMPANION() to simplify code in some drivers (Rafael
Wysocki).
- Check the states of all ACPI power resources during initialization
to avoid dealing with power resources in unknown states (Rafael
Wysocki).
- Fix ACPI power resource issues related to sharing wakeup power
resources (Rafael Wysocki).
- Avoid registering redundant suspend_ops (Rafael Wysocki).
- Report battery charging state as "full" if it appears to be over
the design capacity (André Almeida).
- Quirk GK45 mini PC to skip reading _PSR in the AC driver (Stefan
Schaeckeler).
- Mark apei_hest_parse() static (Christoph Hellwig).
- Relax platform response timeout to 1 second after instructing it
to inject an error (Shuai Xue).
- Make the PRM code handle memory allocation and remapping failures
more gracefully and drop some unnecessary blank lines from that
code (Aubrey Li).
- Fix spelling mistake in the ACPI documentation (Colin Ian King).
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Merge tag 'acpi-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"These update the ACPICA code in the kernel to the most recent upstream
revision, address some issues related to the ACPI power resources
management, simplify the enumeration of PCI devices having ACPI
companions, add new quirks, fix assorted problems, update the
ACPI-related information in maintainers and clean up code in several
places.
Specifics:
- Update the ACPICA code in the kernel to upstream revision 20210930
including the following changes:
- Fix system-wide resume issue caused by evaluating control
methods too early in the resume path (Rafael Wysocki).
- Add support for Windows 2020 _OSI string (Mario Limonciello).
- Add Generic Port Affinity type for SRAT (Alison Schofield).
- Add disassembly support for the NHLT ACPI table (Bob Moore).
- Avoid flushing caches before entering C3 type of idle states on AMD
processors (Deepak Sharma).
- Avoid enumerating CPUs that are not present and not online-capable
according to the platform firmware (Mario Limonciello).
- Add DMI-based mechanism to quirk IRQ overrides and use it for two
platforms (Hui Wang).
- Change the configuration of unused ACPI device objects to reflect
the D3cold power state after enumerating devices (Rafael Wysocki).
- Update MAINTAINERS information regarding ACPI (Rafael Wysocki).
- Fix typo in ACPI Kconfig (Masanari Iid).
- Use sysfs_emit() instead of snprintf() in some places (Qing Wang).
- Make the association of ACPI device objects with PCI devices more
straightforward and simplify the code doing that for all devices in
general (Rafael Wysocki).
- Use acpi_device_adr() in acpi_find_child_device() instead of
evaluating _ADR (Rafael Wysocki).
- Drop duplicate device IDs from PNP device IDs list (Krzysztof
Kozlowski).
- Allow acpi_idle_play_dead() to use C3 on AMD processors (Richard
Gong).
- Use ACPI_COMPANION() to simplify code in some drivers (Rafael
Wysocki).
- Check the states of all ACPI power resources during initialization
to avoid dealing with power resources in unknown states (Rafael
Wysocki).
- Fix ACPI power resource issues related to sharing wakeup power
resources (Rafael Wysocki).
- Avoid registering redundant suspend_ops (Rafael Wysocki).
- Report battery charging state as "full" if it appears to be over
the design capacity (André Almeida).
- Quirk GK45 mini PC to skip reading _PSR in the AC driver (Stefan
Schaeckeler).
- Mark apei_hest_parse() static (Christoph Hellwig).
- Relax platform response timeout to 1 second after instructing it to
inject an error (Shuai Xue).
- Make the PRM code handle memory allocation and remapping failures
more gracefully and drop some unnecessary blank lines from that
code (Aubrey Li).
- Fix spelling mistake in the ACPI documentation (Colin Ian King)"
* tag 'acpi-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (36 commits)
ACPI: glue: Use acpi_device_adr() in acpi_find_child_device()
perf: qcom_l2_pmu: ACPI: Use ACPI_COMPANION() directly
ACPI: APEI: mark apei_hest_parse() static
ACPI: APEI: EINJ: Relax platform response timeout to 1 second
gpio-amdpt: ACPI: Use the ACPI_COMPANION() macro directly
nouveau: ACPI: Use the ACPI_COMPANION() macro directly
ACPI: resources: Add one more Medion model in IRQ override quirk
ACPI: AC: Quirk GK45 to skip reading _PSR
ACPI: PM: sleep: Do not set suspend_ops unnecessarily
ACPI: PRM: Handle memory allocation and memory remap failure
ACPI: PRM: Remove unnecessary blank lines
ACPI: PM: Turn off wakeup power resources on _DSW/_PSW errors
ACPI: PM: Fix sharing of wakeup power resources
ACPI: PM: Turn off unused wakeup power resources
ACPI: PM: Check states of power resources during initialization
ACPI: replace snprintf() in "show" functions with sysfs_emit()
ACPI: LPSS: Use ACPI_COMPANION() directly
ACPI: scan: Release PM resources blocked by unused objects
ACPI: battery: Accept charges over the design capacity as full
ACPICA: Update version to 20210930
...
|
||
|
Linus Torvalds
|
c03098d4b9 |
gfs2: Fix mmap + page fault deadlocks
Functions gfs2_file_read_iter and gfs2_file_write_iter are both
accessing the user buffer to write to or read from while holding the
inode glock. In the most basic scenario, that buffer will not be
resident and it will be mapped to the same file. Accessing the buffer
will trigger a page fault, and gfs2 will deadlock trying to take the
same inode glock again while trying to handle that fault.
Fix that and similar, more complex scenarios by disabling page faults
while accessing user buffers. To make this work, introduce a small
amount of new infrastructure and fix some bugs that didn't trigger so
far, with page faults enabled.
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Merge tag 'gfs2-v5.15-rc5-mmap-fault' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 mmap + page fault deadlocks fixes from Andreas Gruenbacher:
"Functions gfs2_file_read_iter and gfs2_file_write_iter are both
accessing the user buffer to write to or read from while holding the
inode glock.
In the most basic deadlock scenario, that buffer will not be resident
and it will be mapped to the same file. Accessing the buffer will
trigger a page fault, and gfs2 will deadlock trying to take the same
inode glock again while trying to handle that fault.
Fix that and similar, more complex scenarios by disabling page faults
while accessing user buffers. To make this work, introduce a small
amount of new infrastructure and fix some bugs that didn't trigger so
far, with page faults enabled"
* tag 'gfs2-v5.15-rc5-mmap-fault' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
gfs2: Fix mmap + page fault deadlocks for direct I/O
iov_iter: Introduce nofault flag to disable page faults
gup: Introduce FOLL_NOFAULT flag to disable page faults
iomap: Add done_before argument to iomap_dio_rw
iomap: Support partial direct I/O on user copy failures
iomap: Fix iomap_dio_rw return value for user copies
gfs2: Fix mmap + page fault deadlocks for buffered I/O
gfs2: Eliminate ip->i_gh
gfs2: Move the inode glock locking to gfs2_file_buffered_write
gfs2: Introduce flag for glock holder auto-demotion
gfs2: Clean up function may_grant
gfs2: Add wrapper for iomap_file_buffered_write
iov_iter: Introduce fault_in_iov_iter_writeable
iov_iter: Turn iov_iter_fault_in_readable into fault_in_iov_iter_readable
gup: Turn fault_in_pages_{readable,writeable} into fault_in_{readable,writeable}
powerpc/kvm: Fix kvm_use_magic_page
iov_iter: Fix iov_iter_get_pages{,_alloc} page fault return value
|
||
|
Linus Torvalds
|
d7e0a795bf |
ARM:
* More progress on the protected VM front, now with the full
fixed feature set as well as the limitation of some hypercalls
after initialisation.
* Cleanup of the RAZ/WI sysreg handling, which was pointlessly
complicated
* Fixes for the vgic placement in the IPA space, together with a
bunch of selftests
* More memcg accounting of the memory allocated on behalf of a guest
* Timer and vgic selftests
* Workarounds for the Apple M1 broken vgic implementation
* KConfig cleanups
* New kvmarm.mode=none option, for those who really dislike us
RISC-V:
* New KVM port.
x86:
* New API to control TSC offset from userspace
* TSC scaling for nested hypervisors on SVM
* Switch masterclock protection from raw_spin_lock to seqcount
* Clean up function prototypes in the page fault code and avoid
repeated memslot lookups
* Convey the exit reason to userspace on emulation failure
* Configure time between NX page recovery iterations
* Expose Predictive Store Forwarding Disable CPUID leaf
* Allocate page tracking data structures lazily (if the i915
KVM-GT functionality is not compiled in)
* Cleanups, fixes and optimizations for the shadow MMU code
s390:
* SIGP Fixes
* initial preparations for lazy destroy of secure VMs
* storage key improvements/fixes
* Log the guest CPNC
Starting from this release, KVM-PPC patches will come from
Michael Ellerman's PPC tree.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Paolo Bonzini:
"ARM:
- More progress on the protected VM front, now with the full fixed
feature set as well as the limitation of some hypercalls after
initialisation.
- Cleanup of the RAZ/WI sysreg handling, which was pointlessly
complicated
- Fixes for the vgic placement in the IPA space, together with a
bunch of selftests
- More memcg accounting of the memory allocated on behalf of a guest
- Timer and vgic selftests
- Workarounds for the Apple M1 broken vgic implementation
- KConfig cleanups
- New kvmarm.mode=none option, for those who really dislike us
RISC-V:
- New KVM port.
x86:
- New API to control TSC offset from userspace
- TSC scaling for nested hypervisors on SVM
- Switch masterclock protection from raw_spin_lock to seqcount
- Clean up function prototypes in the page fault code and avoid
repeated memslot lookups
- Convey the exit reason to userspace on emulation failure
- Configure time between NX page recovery iterations
- Expose Predictive Store Forwarding Disable CPUID leaf
- Allocate page tracking data structures lazily (if the i915 KVM-GT
functionality is not compiled in)
- Cleanups, fixes and optimizations for the shadow MMU code
s390:
- SIGP Fixes
- initial preparations for lazy destroy of secure VMs
- storage key improvements/fixes
- Log the guest CPNC
Starting from this release, KVM-PPC patches will come from Michael
Ellerman's PPC tree"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (227 commits)
RISC-V: KVM: fix boolreturn.cocci warnings
RISC-V: KVM: remove unneeded semicolon
RISC-V: KVM: Fix GPA passed to __kvm_riscv_hfence_gvma_xyz() functions
RISC-V: KVM: Factor-out FP virtualization into separate sources
KVM: s390: add debug statement for diag 318 CPNC data
KVM: s390: pv: properly handle page flags for protected guests
KVM: s390: Fix handle_sske page fault handling
KVM: x86: SGX must obey the KVM_INTERNAL_ERROR_EMULATION protocol
KVM: x86: On emulation failure, convey the exit reason, etc. to userspace
KVM: x86: Get exit_reason as part of kvm_x86_ops.get_exit_info
KVM: x86: Clarify the kvm_run.emulation_failure structure layout
KVM: s390: Add a routine for setting userspace CPU state
KVM: s390: Simplify SIGP Set Arch handling
KVM: s390: pv: avoid stalls when making pages secure
KVM: s390: pv: avoid stalls for kvm_s390_pv_init_vm
KVM: s390: pv: avoid double free of sida page
KVM: s390: pv: add macros for UVC CC values
s390/mm: optimize reset_guest_reference_bit()
s390/mm: optimize set_guest_storage_key()
s390/mm: no need for pte_alloc_map_lock() if we know the pmd is present
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Linus Torvalds
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44261f8e28 |
hyperv-next for 5.16
-----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEIbPD0id6easf0xsudhRwX5BBoF4FAmGBMQUTHHdlaS5saXVA a2VybmVsLm9yZwAKCRB2FHBfkEGgXmE5B/9MK3Ju+tc6C8eyR3Ic4XBYHJ3voEKO M+R90gggBriDOgkz4B8vF+k0aD8wevXAUtmCSXonDzCh5H7GoyfrVZmJEVkwlioH ZMSMlFHcjGhCPIXhLbNtfo/NsAYEtT/lRM2lLGCSbdGuKabylXKujVdhuSIcRPdj Rj5innUgcAywOoxG6WzFt3JBzM33UQErCGfUF2b7Rvp9E+Zii4vIMxkMzUpnkEHH F8WMEdL0DqH5ThOs0MslNgy03pUC9wk1d5DNd9ytYHqiSQtcQZhFHw/P6dxzUFlW OptWv31PXUIsiJf4Zi9hmfjgUl+KZHeacZ2hXtidAo86VPcIjVs25OQW =40fn -----END PGP SIGNATURE----- Merge tag 'hyperv-next-signed-20211102' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull hyperv updates from Wei Liu: - Initial patch set for Hyper-V isolation VM support (Tianyu Lan) - Fix a warning on preemption (Vitaly Kuznetsov) - A bunch of misc cleanup patches * tag 'hyperv-next-signed-20211102' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: x86/hyperv: Protect set_hv_tscchange_cb() against getting preempted Drivers: hv : vmbus: Adding NULL pointer check x86/hyperv: Remove duplicate include x86/hyperv: Remove duplicated include in hv_init Drivers: hv: vmbus: Remove unused code to check for subchannels Drivers: hv: vmbus: Initialize VMbus ring buffer for Isolation VM Drivers: hv: vmbus: Add SNP support for VMbus channel initiate message x86/hyperv: Add ghcb hvcall support for SNP VM x86/hyperv: Add Write/Read MSR registers via ghcb page Drivers: hv: vmbus: Mark vmbus ring buffer visible to host in Isolation VM x86/hyperv: Add new hvcall guest address host visibility support x86/hyperv: Initialize shared memory boundary in the Isolation VM. x86/hyperv: Initialize GHCB page in Isolation VM |
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Rafael J. Wysocki
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b2ffa16a1c |
Merge branches 'acpi-x86', 'acpi-resources', 'acpi-scan' and 'acpi-misc'
Merge x86-specific ACPI updates, ACPI resources management updates, one ACPI device enumeration update and miscellaneous ACPI updates for 5.16-rc1: - Avoid flushing caches before entering C3 type of idle states on AMD processors (Deepak Sharma). - Avoid enumerating CPUs that are not present and not online-capable according to the platform firmware (Mario Limonciello). - Add DMI-based mechanism to quirk IRQ overrides and use it for two platforms (Hui Wang). - Change the configuration of unused ACPI device objects to reflect the D3cold power state after enumerating devices (Rafael Wysocki). - Update MAINTAINERS information regarding ACPI (Rafael Wysocki). - Fix typo in ACPI Kconfig (Masanari Iid). - Use sysfs_emit() instead of snprintf() in some places (Qing Wang). * acpi-x86: x86: ACPI: cstate: Optimize C3 entry on AMD CPUs x86/ACPI: Don't add CPUs that are not online capable ACPICA: Add support for MADT online enabled bit * acpi-resources: ACPI: resources: Add one more Medion model in IRQ override quirk ACPI: resources: Add DMI-based legacy IRQ override quirk * acpi-scan: ACPI: scan: Release PM resources blocked by unused objects * acpi-misc: ACPI: replace snprintf() in "show" functions with sysfs_emit() ACPI: Update information in MAINTAINERS ACPI: Kconfig: Fix a typo in Kconfig |
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Linus Torvalds
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cc0356d6a0 |
- Do not #GP on userspace use of CLI/STI but pretend it was a NOP to
keep old userspace from breaking. Adjust the corresponding iopl selftest to that. - Improve stack overflow warnings to say which stack got overflowed and raise the exception stack sizes to 2 pages since overflowing the single page of exception stack is very easy to do nowadays with all the tracing machinery enabled. With that, rip out the custom mapping of AMD SEV's too. - A bunch of changes in preparation for FGKASLR like supporting more than 64K section headers in the relocs tool, correct ORC lookup table size to cover the whole kernel .text and other adjustments. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmF/uugACgkQEsHwGGHe VUroKw//e8BJ3Aun8bg00FHxfiMGbPYcozjLGDkaoMtMDZ8WlfCUrvtqYICEr8eB UU0eRyygAPI167dre1O9JvAcbilkNTKntaU6qbu/ZVyUwS3+Jkjwsotbqn3xKtkd QDDTDNiCU+beCJ2ZbspbrPgEh13+H0MwMHUfRxZB9Scpmo6aGSEaU3g295f6GX57 VFGJ/LNov5MV1dTD7Pp/h6/Nb+R6WmflKcBzJmQxYuKyKX+g1xsSv0VSga+t+uf3 M9pUkizqTiUxzC2eLgtcEZTqqBHu810E8M76FmhKBUMilsFJT5YAJTiqyahwHXds HYarOFRgcnFuJPd29vn8UHjqeeoi6ru8GtcZYzccEc7U3ku/gXPaDJ9ffmvhs7vU pJX5Um3GiiFm0w/ZZOKDqh78wRAsCKLN+jIoyszuhkkNchZSj/jKfOgdd3EmcZst 6L6rxBA4oRHwNOgM7uVMp+jFeRe1/prR280OWWH0D4QmmuqybThOdO23Iuh/Deth W3qPUH3UQtfSWxGy2yODzJ1ciuGAr/AzJZ9zjg04e3Vl0DkEpyWtLKJiG3ClXZag Nj+3xc4xYH2Aw+M0HRaONk5XVKLpqVjuAfgU5iLQa0YSUbtrR+wCWvY8KgQNbAqK xZmzYzQ89stwVCuGKx10gPsL3jSJ3VCylMfqdHD2Ajmld1yApr0= =DOZU -----END PGP SIGNATURE----- Merge tag 'x86_core_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 core updates from Borislav Petkov: - Do not #GP on userspace use of CLI/STI but pretend it was a NOP to keep old userspace from breaking. Adjust the corresponding iopl selftest to that. - Improve stack overflow warnings to say which stack got overflowed and raise the exception stack sizes to 2 pages since overflowing the single page of exception stack is very easy to do nowadays with all the tracing machinery enabled. With that, rip out the custom mapping of AMD SEV's too. - A bunch of changes in preparation for FGKASLR like supporting more than 64K section headers in the relocs tool, correct ORC lookup table size to cover the whole kernel .text and other adjustments. * tag 'x86_core_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: selftests/x86/iopl: Adjust to the faked iopl CLI/STI usage vmlinux.lds.h: Have ORC lookup cover entire _etext - _stext x86/boot/compressed: Avoid duplicate malloc() implementations x86/boot: Allow a "silent" kaslr random byte fetch x86/tools/relocs: Support >64K section headers x86/sev: Make the #VC exception stacks part of the default stacks storage x86: Increase exception stack sizes x86/mm/64: Improve stack overflow warnings x86/iopl: Fake iopl(3) CLI/STI usage |
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Juergen Gross
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e453f872b7 |
x86/xen: switch initial pvops IRQ functions to dummy ones
The initial pvops functions handling irq flags will only ever be called before interrupts are being enabled. So switch them to be dummy functions: - xen_save_fl() can always return 0 - xen_irq_disable() is a nop - xen_irq_enable() can BUG() Add some generic paravirt functions for that purpose. Signed-off-by: Juergen Gross <jgross@suse.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Link: https://lore.kernel.org/r/20211028072748.29862-3-jgross@suse.com Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> |
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Linus Torvalds
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d2fac0afe8 |
audit/stable-5.16 PR 20211101
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Linus Torvalds
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79ef0c0014 |
Tracing updates for 5.16:
- kprobes: Restructured stack unwinder to show properly on x86 when a stack dump happens from a kretprobe callback. - Fix to bootconfig parsing - Have tracefs allow owner and group permissions by default (only denying others). There's been pressure to allow non root to tracefs in a controlled fashion, and using groups is probably the safest. - Bootconfig memory managament updates. - Bootconfig clean up to have the tools directory be less dependent on changes in the kernel tree. - Allow perf to be traced by function tracer. - Rewrite of function graph tracer to be a callback from the function tracer instead of having its own trampoline (this change will happen on an arch by arch basis, and currently only x86_64 implements it). - Allow multiple direct trampolines (bpf hooks to functions) be batched together in one synchronization. - Allow histogram triggers to add variables that can perform calculations against the event's fields. - Use the linker to determine architecture callbacks from the ftrace trampoline to allow for proper parameter prototypes and prevent warnings from the compiler. - Extend histogram triggers to key off of variables. - Have trace recursion use bit magic to determine preempt context over if branches. - Have trace recursion disable preemption as all use cases do anyway. - Added testing for verification of tracing utilities. - Various small clean ups and fixes. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYYBdxhQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qp1sAQD2oYFwaG3sx872gj/myBcHIBSKdiki Hry5csd8zYDBpgD+Poylopt5JIbeDuoYw/BedgEXmscZ8Qr7VzjAXdnv/Q4= =Loz8 -----END PGP SIGNATURE----- Merge tag 'trace-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: - kprobes: Restructured stack unwinder to show properly on x86 when a stack dump happens from a kretprobe callback. - Fix to bootconfig parsing - Have tracefs allow owner and group permissions by default (only denying others). There's been pressure to allow non root to tracefs in a controlled fashion, and using groups is probably the safest. - Bootconfig memory managament updates. - Bootconfig clean up to have the tools directory be less dependent on changes in the kernel tree. - Allow perf to be traced by function tracer. - Rewrite of function graph tracer to be a callback from the function tracer instead of having its own trampoline (this change will happen on an arch by arch basis, and currently only x86_64 implements it). - Allow multiple direct trampolines (bpf hooks to functions) be batched together in one synchronization. - Allow histogram triggers to add variables that can perform calculations against the event's fields. - Use the linker to determine architecture callbacks from the ftrace trampoline to allow for proper parameter prototypes and prevent warnings from the compiler. - Extend histogram triggers to key off of variables. - Have trace recursion use bit magic to determine preempt context over if branches. - Have trace recursion disable preemption as all use cases do anyway. - Added testing for verification of tracing utilities. - Various small clean ups and fixes. * tag 'trace-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (101 commits) tracing/histogram: Fix semicolon.cocci warnings tracing/histogram: Fix documentation inline emphasis warning tracing: Increase PERF_MAX_TRACE_SIZE to handle Sentinel1 and docker together tracing: Show size of requested perf buffer bootconfig: Initialize ret in xbc_parse_tree() ftrace: do CPU checking after preemption disabled ftrace: disable preemption when recursion locked tracing/histogram: Document expression arithmetic and constants tracing/histogram: Optimize division by a power of 2 tracing/histogram: Covert expr to const if both operands are constants tracing/histogram: Simplify handling of .sym-offset in expressions tracing: Fix operator precedence for hist triggers expression tracing: Add division and multiplication support for hist triggers tracing: Add support for creating hist trigger variables from literal selftests/ftrace: Stop tracing while reading the trace file by default MAINTAINERS: Update KPROBES and TRACING entries test_kprobes: Move it from kernel/ to lib/ docs, kprobes: Remove invalid URL and add new reference samples/kretprobes: Fix return value if register_kretprobe() failed lib/bootconfig: Fix the xbc_get_info kerneldoc ... |