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KVM: arm64: Use MI to detect groups being enabled/disabled

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Add the maintenance interrupt to force an exit when the guest
enables/disables individual groups, so that we can resort the
ap_list accordingly.

Tested-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Link: https://msgid.link/20251120172540.2267180-27-maz@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
This commit is contained in:
Marc Zyngier
2025-11-20 17:25:16 +00:00
committed by Oliver Upton
parent 33c1f60b32
commit a69e2d6f89
2 changed files with 10 additions and 0 deletions
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5
arch/arm64/kvm/vgic/vgic-v2.c
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@@ -39,6 +39,11 @@ void vgic_v2_configure_hcr(struct kvm_vcpu *vcpu,
cpuif->vgic_hcr |= GICH_HCR_LRENPIE;
if (irqs_outside_lrs(als))
cpuif->vgic_hcr |= GICH_HCR_UIE;
cpuif->vgic_hcr |= (cpuif->vgic_vmcr & GICH_VMCR_ENABLE_GRP0_MASK) ?
GICH_HCR_VGrp0DIE : GICH_HCR_VGrp0EIE;
cpuif->vgic_hcr |= (cpuif->vgic_vmcr & GICH_VMCR_ENABLE_GRP1_MASK) ?
GICH_HCR_VGrp1DIE : GICH_HCR_VGrp1EIE;
}
static bool lr_signals_eoi_mi(u32 lr_val)

5
arch/arm64/kvm/vgic/vgic-v3.c
View File

@@ -39,6 +39,11 @@ void vgic_v3_configure_hcr(struct kvm_vcpu *vcpu,
if (!als->nr_sgi)
cpuif->vgic_hcr |= ICH_HCR_EL2_vSGIEOICount;
cpuif->vgic_hcr |= (cpuif->vgic_vmcr & ICH_VMCR_ENG0_MASK) ?
ICH_HCR_EL2_VGrp0DIE : ICH_HCR_EL2_VGrp0EIE;
cpuif->vgic_hcr |= (cpuif->vgic_vmcr & ICH_VMCR_ENG1_MASK) ?
ICH_HCR_EL2_VGrp1DIE : ICH_HCR_EL2_VGrp1EIE;
}
static bool lr_signals_eoi_mi(u64 lr_val)