AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/arch/arm64/kvm
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Alexandru Elisei 96275c8f6c KVM: arm64: Don't zero the cycle count register when PMCR_EL0.P is set 
[ Upstream commit 2a71fabf6a1bc9162a84e18d6ab991230ca4d588 ]

According to ARM DDI 0487G.a, page D13-3895, setting the PMCR_EL0.P bit to
1 has the following effect:

"Reset all event counters accessible in the current Exception level, not
including PMCCNTR_EL0, to zero."

Similar behaviour is described for AArch32 on page G8-7022. Make it so.

Fixes: c01d6a1802 ("KVM: arm64: pmu: Only handle supported event counters")
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210618105139.83795-1-alexandru.elisei@arm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:56:08 +02:00
..
hyp KVM: arm64: Fix nVHE hyp panic host context restore 2021-03-17 17:06:37 +01:00
vgic KVM: arm64: Fix KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION read 2021-05-14 09:50:05 +02:00
aarch32.c KVM: arm64: Synchronize sysreg state on injecting an AArch32 exception 2020-06-10 16:04:08 +01:00
arch_timer.c KVM: arm64: timers: Move timer registers to the sys_regs file 2020-07-07 09:28:38 +01:00
arm.c KVM: arm64: Initialize VCPU mdcr_el2 before loading it 2021-05-14 09:50:33 +02:00
debug.c KVM: arm64: Initialize VCPU mdcr_el2 before loading it 2021-05-14 09:50:33 +02:00
fpsimd.c KVM: arm64: Make struct kvm_regs userspace-only 2020-07-07 09:28:38 +01:00
guest.c KVM: arm64: Move SPSR_EL1 to the system register array 2020-07-07 09:28:38 +01:00
handle_exit.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
hypercalls.c KVM: arm64: ARM_SMCCC_ARCH_WORKAROUND_1 doesn't return SMCCC_RET_NOT_REQUIRED 2020-10-28 11:13:36 +00:00
inject_fault.c KVM: arm64: Fix inject_fault.c kernel-doc warnings 2020-09-18 16:17:22 +01:00
irq.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422 2019-06-05 17:37:15 +02:00
Kconfig KVM: arm64: Replace CONFIG_KVM_INDIRECT_VECTORS with CONFIG_RANDOMIZE_BASE 2020-09-29 16:08:15 +01:00
Makefile KVM: arm64: nVHE: Migrate hyp-init to SMCCC 2020-09-15 18:39:04 +01:00
mmio.c KVM/arm64 updates for Linux 5.9: 2020-08-09 12:58:23 -04:00
mmu.c KVM: arm64: Fix exclusive limit for IPA size 2021-03-17 17:06:36 +01:00
perf.c KVM: arm64: Move virt/kvm/arm to arch/arm64 2020-05-16 15:03:59 +01:00
pmu-emul.c KVM: arm64: Don't zero the cycle count register when PMCR_EL0.P is set 2021-07-14 16:56:08 +02:00
pmu.c kvm: arm64: Set up hyp percpu data for nVHE 2020-09-30 08:37:14 +01:00
psci.c KVM: arm64: Convert ARCH_WORKAROUND_2 to arm64_get_spectre_v4_state() 2020-09-29 16:08:17 +01:00
pvtime.c arm64/x86: KVM: Introduce steal-time cap 2020-08-21 14:05:19 +01:00
regmap.c KVM: arm64: Move SPSR_EL1 to the system register array 2020-07-07 09:28:38 +01:00
reset.c KVM: arm64: Prevent mixed-width VM creation 2021-06-03 09:00:32 +02:00
sys_regs.c KVM: arm64: Fix debug register indexing 2021-06-10 13:39:28 +02:00
sys_regs.h KVM: arm64: Check RAZ visibility in ID register accessors 2020-11-06 16:00:29 +00:00
trace_arm.h KVM: arm64: Fix address truncation in traces 2020-09-04 10:53:48 +01:00
trace_handle_exit.h KVM: arm64: Fix address truncation in traces 2020-09-04 10:53:48 +01:00
trace.h KVM: arm64: Move virt/kvm/arm to arch/arm64 2020-05-16 15:03:59 +01:00
va_layout.c KVM: arm64: Make nVHE ASLR conditional on RANDOMIZE_BASE 2020-07-28 10:41:11 +01:00
vgic-sys-reg-v3.c KVM: arm64: Move virt/kvm/arm to arch/arm64 2020-05-16 15:03:59 +01:00