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| author | Sascha Bischoff <Sascha.Bischoff@arm.com> | 2026-01-06 19:52:10 +0300 |
|---|---|---|
| committer | Oliver Upton <oupton@kernel.org> | 2026-01-08 23:49:21 +0300 |
| commit | 5e8b511c39f35dcbf2e548a75d49782778c2df48 (patch) | |
| tree | 09a00ce85cbca314eefbd38d8e4d45d78ee45c3a | |
| parent | f8f9c1f4d0c7a64600e2ca312dec824a0bc2f1da (diff) | |
| download | linux-5e8b511c39f35dcbf2e548a75d49782778c2df48.tar.xz | |
KVM: arm64: gic: Check for vGICv3 when clearing TWI
Explicitly check for the vgic being v3 when disabling TWI. Failure to
check this can result in using the wrong view of the vgic CPU IF union
causing undesirable/unexpected behaviour.
Signed-off-by: Sascha Bischoff <sascha.bischoff@arm.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20260106165154.3321753-1-sascha.bischoff@arm.com
Signed-off-by: Oliver Upton <oupton@kernel.org>
| -rw-r--r-- | arch/arm64/kvm/arm.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 4f80da0c0d1d..620a465248d1 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -569,6 +569,7 @@ static bool kvm_vcpu_should_clear_twi(struct kvm_vcpu *vcpu) return kvm_wfi_trap_policy == KVM_WFX_NOTRAP; return single_task_running() && + vcpu->kvm->arch.vgic.vgic_model == KVM_DEV_TYPE_ARM_VGIC_V3 && (atomic_read(&vcpu->arch.vgic_cpu.vgic_v3.its_vpe.vlpi_count) || vcpu->kvm->arch.vgic.nassgireq); } |