Marc Zyngier 29ca4fac7d KVM: arm64: Do not change the PMU event filter after a VCPU has run ... [ Upstream commit 5177fe91e4 ] Userspace can specify which events a guest is allowed to use with the KVM_ARM_VCPU_PMU_V3_FILTER attribute. The list of allowed events can be identified by a guest from reading the PMCEID{0,1}_EL0 registers. Changing the PMU event filter after a VCPU has run can cause reads of the registers performed before the filter is changed to return different values than reads performed with the new event filter in place. The architecture defines the two registers as read-only, and this behaviour contradicts that. Keep track when the first VCPU has run and deny changes to the PMU event filter to prevent this from happening. Signed-off-by: Marc Zyngier <maz@kernel.org> [ Alexandru E: Added commit message, updated ioctl documentation ] Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20220127161759.53553-2-alexandru.elisei@arm.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-04-13 19:27:13 +02:00
..
ABI	f2fs: don't get FREEZE lock in f2fs_evict_inode in frozen fs	2022-04-08 13:58:40 +02:00
PCI	…
RCU	Merge branches 'doc.2021.11.30c', 'exp.2021.12.07a', 'fastnohz.2021.11.30c', 'fixes.2021.11.30c', 'nocb.2021.12.09a', 'nolibc.2021.11.30c', 'tasks.2021.12.09a', 'torture.2021.12.07a' and 'torturescript.2021.11.30c' into HEAD	2021-12-09 11:38:09 -08:00
accounting	- A bunch of fixes: forced idle time accounting, utilization values	2022-01-23 17:35:27 +02:00
admin-guide	docs: sysctl/kernel: add missing bit to panic_print	2022-04-08 13:59:03 +02:00
arc	docs: ARC: Improve readability	2021-12-10 14:28:01 -07:00
arm	Documentation: arm: marvell: Extend Avanta list	2022-01-27 11:22:34 -07:00
arm64	KVM: arm64: Workaround Cortex-A510's single-step and PAC trap errata	2022-02-03 09:22:30 +00:00
block	docs: block: remove queue-sysfs.rst	2022-01-09 18:59:10 -07:00
bpf	bpf, docs: Fully document the JMP mode modifiers	2022-01-05 13:11:26 -08:00
cdrom	…
core-api	Reinstate some of "swiotlb: rework "fix info leak with DMA_FROM_DEVICE""	2022-04-08 13:58:59 +02:00
cpu-freq	cpufreq: Reintroduce ready() callback	2022-02-09 13:18:49 +05:30
crypto	…
dev-tools	linux-kselftest-kunit-fixes-5.17-rc4	2022-02-10 15:39:59 -08:00
devicetree	dt-bindings: pinctrl: pinctrl-microchip-sgpio: Fix example	2022-04-08 13:59:02 +02:00
doc-guide	docs: discourage use of list tables	2022-01-07 09:33:13 -07:00
driver-api	cxl/core/port: Rename bus.c to port.c	2022-04-08 13:58:07 +02:00
fault-injection	…
fb	…
features	ARM: 9158/1: leave it to core code to manage thread_info::cpu	2021-12-17 11:34:31 +00:00
filesystems	netfs, cachefiles: Add a method to query presence of data in the cache	2022-02-01 10:29:18 -06:00
firmware-guide	Device properties framework updates for 5.17-rc1	2022-01-10 20:48:19 -08:00
firmware_class	…
fpga	…
gpu	Revert "fbcon: Disable accelerated scrolling"	2022-02-02 15:15:11 +01:00
hid	…
hwmon	hwmon/pmbus: (ir38064) Add support for IR38060, IR38164 IR38263	2021-12-26 15:02:07 -08:00
i2c	Docs: Fixes link to I2C specification	2021-12-31 14:39:28 +01:00
ia64	…
ide	…
iio	…
infiniband	…
input	…
isdn	…
kbuild	doc: kbuild: fix default in `imply` table	2022-01-08 18:28:21 +09:00
kernel-hacking	docs: fix typo in Documentation/kernel-hacking/locking.rst	2022-01-27 11:22:33 -07:00
leds	…
litmus-tests	…
livepatch	Documentation: livepatch: Add livepatch API page	2021-12-23 11:35:53 +01:00
locking	Documentation/locking/locktypes: Update migrate_disable() bits.	2021-11-30 15:40:31 +01:00
m68k	…
maintainer	…
mhi	…
mips	…
misc-devices	…
netlabel	…
networking	This isn't a hugely busy cycle for documentation, but a few significant	2022-01-11 10:00:04 -08:00
nios2	…
nvdimm	…
openrisc	…
parisc	…
pcmcia	…
power	Merge branches 'pm-opp', 'pm-devfreq' and 'powercap'	2022-01-10 18:00:31 +01:00
powerpc	…
process	Documentation: update stable tree link	2022-04-08 13:57:17 +02:00
riscv	riscv: Move KASAN mapping next to the kernel mapping	2022-01-19 17:54:04 -08:00
s390	…
scheduler	docs/scheduler: fix typo and warning in sched-bwc	2021-12-06 12:15:49 -07:00
scsi	…
security	docs: fix 'make htmldocs' warning in SCTP.rst	2022-04-08 13:58:59 +02:00
sh	…
sound	ALSA: hda/realtek: Add alc256-samsung-headphone fixup	2022-04-08 13:58:46 +02:00
sparc	…
sphinx	docs: sphinx/requirements: Limit jinja2<3.1	2022-04-08 13:57:14 +02:00
sphinx-static	docs: add support for RTD dark mode	2021-12-10 14:05:55 -07:00
spi	spi: pxa2xx: Get rid of unused enable_loopback member	2021-11-29 12:20:00 +00:00
staging	Three small documentation fixes.	2022-01-22 09:02:57 +02:00
target	…
timers	rcu: Remove the RCU_FAST_NO_HZ Kconfig option	2021-11-30 17:24:47 -08:00
tools	Tracing fixes for 5.17:	2022-02-26 12:10:17 -08:00
trace	Three small documentation fixes.	2022-01-22 09:02:57 +02:00
translations	cpufreq: Reintroduce ready() callback	2022-02-09 13:18:49 +05:30
tty	Documentation: add TTY chapter	2021-11-26 16:27:43 +01:00
usb	docs: ABI: fixed req_number desc in UAC1	2021-12-30 12:10:44 +01:00
userspace-api	xen: update missing ioctl magic numers documentation	2022-02-03 08:24:34 +01:00
virt	KVM: arm64: Do not change the PMU event filter after a VCPU has run	2022-04-13 19:27:13 +02:00
vm	docs/vm: Fix typo in *harden*	2022-01-27 11:22:34 -07:00
w1	…
watchdog	…
x86	x86/sgx: Fix minor documentation issues	2021-11-17 06:36:09 -08:00
xtensa	…
.gitignore	…
COPYING-logo	…
Changes	…
CodingStyle	…
Kconfig	…
Makefile	docs: address some text issues with css/theme support	2021-12-16 15:54:12 -07:00
SubmittingPatches	…
arch.rst	docs: Add documentation for ARC processors	2021-11-29 14:53:11 -07:00
asm-annotations.rst	…
atomic_bitops.txt	…
atomic_t.txt	…
conf.py	docs: add support for RTD dark mode	2021-12-10 14:05:55 -07:00
docutils.conf	…
dontdiff	…
index.rst	docs: Hook the RTLA documents into the kernel docs build	2022-01-27 11:20:39 -07:00
logo.gif	…
memory-barriers.txt	asm-generic: introduce io_stop_wc() and add implementation for ARM64	2021-12-22 10:44:53 +00:00
watch_queue.rst	…