Akihiko Odaki 64074ca8ca KVM: arm64: PMU: Fix SET_ONE_REG for vPMC regs ... Reload the perf event when setting the vPMU counter (vPMC) registers (PMCCNTR_EL0 and PMEVCNTR<n>_EL0). This is a change corresponding to commit 9228b26194 ("KVM: arm64: PMU: Fix GET_ONE_REG for vPMC regs to return the current value") but for SET_ONE_REG. Values of vPMC registers are saved in sysreg files on certain occasions. These saved values don't represent the current values of the vPMC registers if the perf events for the vPMCs count events after the save. The current values of those registers are the sum of the sysreg file value and the current perf event counter value. But, when userspace writes those registers (using KVM_SET_ONE_REG), KVM only updates the sysreg file value and leaves the current perf event counter value as is. It is also important to keep the correct state even if userspace writes them after first run, specifically when debugging Windows on QEMU with GDB; QEMU tries to write back all visible registers when resuming the VM execution with GDB, corrupting the PMU state. Windows always uses the PMU so this can cause adverse effects on that particular OS. Fix this by releasing the current perf event and trigger recreating one with KVM_REQ_RELOAD_PMU. Fixes: 051ff581ce ("arm64: KVM: Add access handler for event counter register") Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20250315-pmc-v5-3-ecee87dab216@daynix.com Signed-off-by: Oliver Upton <oliver.upton@linux.dev>		2025-03-17 10:45:21 -07:00
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acpi
asm-generic	arm64 fixes for -rc5	2025-03-01 13:44:51 -08:00
clocksource
crypto
cxl
drm	drm: Fix DSC BPP increment decoding	2025-02-13 10:20:30 +02:00
dt-bindings	dt-bindings: clock: qcom: Add CAMCC clocks for QCS8300	2025-02-02 20:59:04 -06:00
hyperv
keys
kunit
kvm	KVM: arm64: PMU: Fix SET_ONE_REG for vPMC regs	2025-03-17 10:45:21 -07:00
linux	arm64 fixes for -rc5	2025-03-01 13:44:51 -08:00
math-emu
media
memory
misc
net	Including fixes from bluetooth. We didn't get netfilter or wireless PRs	2025-02-27 09:32:42 -08:00
pcmcia
ras
rdma
rv
scsi
soc
sound	ASoC: cs35l56: Prevent races when soft-resetting using SPI control	2025-02-25 15:06:58 +00:00
target
trace	Including fixes from bluetooth. We didn't get netfilter or wireless PRs	2025-02-27 09:32:42 -08:00
uapi	Landlock fix for v6.14-rc5	2025-02-26 11:55:44 -08:00
ufs	scsi: ufs: core: Fix use-after free in init error and remove paths	2025-02-03 17:20:01 -05:00
vdso
video
xen