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| author |   Marc Zyngier <maz@kernel.org> | 2022-04-19 19:27:50 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-04-20 13:24:45 +0100 |
| commit | 89f5074c503b6b6f181c0240c931f67bcaf266e9 (patch) | |
| tree | cd4f418e74bc656f9277c17507e245e561bb24a2 /arch/arm64/include/asm/kvm_host.h | |
| parent | KVM: arm64: Introduce kvm_counter_compute_delta() helper (diff) | |
| download | linux-dev-89f5074c503b6b6f181c0240c931f67bcaf266e9.tar.xz linux-dev-89f5074c503b6b6f181c0240c931f67bcaf266e9.zip | |
KVM: arm64: Handle blocking WFIT instruction
When trapping a blocking WFIT instruction, take it into account when
computing the deadline of the background timer.
The state is tracked with a new vcpu flag, and is gated by a new
CPU capability, which isn't currently enabled.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220419182755.601427-6-maz@kernel.org
Diffstat (limited to 'arch/arm64/include/asm/kvm_host.h')
| -rw-r--r-- | arch/arm64/include/asm/kvm_host.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index e3b25dc6c367..9e6e8701933e 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -441,6 +441,7 @@ struct kvm_vcpu_arch { #define KVM_ARM64_DEBUG_STATE_SAVE_TRBE (1 << 13) /* Save TRBE context if active */ #define KVM_ARM64_FP_FOREIGN_FPSTATE (1 << 14) #define KVM_ARM64_ON_UNSUPPORTED_CPU (1 << 15) /* Physical CPU not in supported_cpus */ +#define KVM_ARM64_WFIT (1 << 16) /* WFIT instruction trapped */ #define KVM_GUESTDBG_VALID_MASK (KVM_GUESTDBG_ENABLE | \ KVM_GUESTDBG_USE_SW_BP | \ |