acrn-kernel/arch/arm64/kvm
Oliver Upton 40e54cad45 KVM: arm64: Document default vPMU behavior on heterogeneous systems
KVM maintains a mask of supported CPUs when a vPMU type is explicitly
selected by userspace and is used to reject any attempt to run the vCPU
on an unsupported CPU. This is great, but we're still beholden to the
default behavior where vCPUs can be scheduled anywhere and guest
counters may silently stop working.

Avoid confusing the next poor sod to look at this code and document the
intended behavior.

Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230525212723.3361524-3-oliver.upton@linux.dev
2023-05-31 10:29:56 +01:00
..
hyp KVM: arm64: Drop last page ref in kvm_pgtable_stage2_free_removed() 2023-05-31 08:02:21 +01:00
vgic KVM: arm64: vgic: Fix a comment 2023-05-19 10:20:00 +01:00
.gitignore
Kconfig kvm: Remove "select SRCU" 2023-04-05 13:47:42 +00:00
Makefile KVM: arm64: nv: Filter out unsupported features from ID regs 2023-02-11 10:13:30 +00:00
arch_timer.c Merge branch kvm-arm64/timer-vm-offsets into kvmarm-master/next 2023-04-21 09:36:40 +01:00
arm.c s390: 2023-05-01 12:06:20 -07:00
debug.c
emulate-nested.c KVM: arm64: nv: Support virtual EL2 exceptions 2023-02-11 09:16:11 +00:00
fpsimd.c KVM: arm64: Clarify host SME state management 2023-04-21 13:46:20 +01:00
guest.c KVM/arm64 updates for 6.4 2023-04-26 15:46:52 -04:00
handle_exit.c KVM: arm64: Let errors from SMCCC emulation to reach userspace 2023-04-05 12:07:42 +01:00
hypercalls.c s390: 2023-05-01 12:06:20 -07:00
inject_fault.c KVM: arm64: Fix repeated words in comments 2023-04-21 13:46:04 +01:00
mmio.c
mmu.c KVM: arm64: Check for kvm_vma_mte_allowed in the critical section 2023-03-16 23:42:56 +00:00
nested.c KVM: arm64: nv: Use reg_to_encoding() to get sysreg ID 2023-02-11 22:10:34 +00:00
pkvm.c KVM: arm64: Ensure CPU PMU probes before pKVM host de-privilege 2023-04-20 16:57:53 +01:00
pmu-emul.c KVM: arm64: Document default vPMU behavior on heterogeneous systems 2023-05-31 10:29:56 +01:00
pmu.c
psci.c Merge branch kvm-arm64/smccc-filtering into kvmarm-master/next 2023-04-21 09:44:32 +01:00
pvtime.c
reset.c KVM: arm64: Avoid lock inversion when setting the VM register width 2023-03-29 14:08:31 +01:00
stacktrace.c
sys_regs.c KVM: arm64: Handle trap of tagged Set/Way CMOs 2023-05-24 13:45:18 +01:00
sys_regs.h KVM: arm64: nv: Allow a sysreg to be hidden from userspace only 2023-02-11 10:13:29 +00:00
trace.h
trace_arm.h KVM: arm64: nv: timers: Support hyp timer emulation 2023-03-30 19:01:10 +01:00
trace_handle_exit.h
trng.c
va_layout.c
vgic-sys-reg-v3.c
vmid.c KVM: arm64: Use the bitmap API to allocate bitmaps 2023-04-20 09:10:28 +01:00