mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-18 12:22:27 -04:00
Code Issues Packages Projects Releases Wiki Activity

KVM: arm64: gic: Check for vGICv3 when clearing TWI

Browse Source 
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>
This commit is contained in:
Sascha Bischoff
2026-01-06 16:52:10 +00:00
committed by Oliver Upton
parent f8f9c1f4d0
commit 5e8b511c39
1 changed files with 1 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm64/kvm/arm.c
View File

@@ -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);
}