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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Oct 2025 09:45:43.0315 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 5270352b-2902-45c3-c1e0-08de10869a29 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[4.158.2.129];Helo=[outbound-uk1.az.dlp.m.darktrace.com] X-MS-Exchange-CrossTenant-AuthSource: AMS0EPF000001A2.eurprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI0PR08MB10848 Content-Type: text/plain; charset="utf-8" If there is no in-kernel irqchip for a GICv3 host set all of the trap bits to block all accesses. This fixes the no-vgic-v3 selftest again. Fixes: 3193287ddffb ("KVM: arm64: gic-v3: Only set ICH_HCR traps for v2-on-= v3 or v3 guests") Reported-by: Mark Brown Closes: https://lore.kernel.org/all/23072856-6b8c-41e2-93d1-ea8a240a7079@si= rena.org.uk Signed-off-by: Sascha Bischoff Reviewed-by: Sebastian Ott Tested-by: Mark Brown --- arch/arm64/kvm/vgic/vgic-v3.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/vgic/vgic-v3.c b/arch/arm64/kvm/vgic/vgic-v3.c index 6fbb4b099855..2f75ef14d339 100644 --- a/arch/arm64/kvm/vgic/vgic-v3.c +++ b/arch/arm64/kvm/vgic/vgic-v3.c @@ -301,7 +301,8 @@ void vcpu_set_ich_hcr(struct kvm_vcpu *vcpu) return; =20 /* Hide GICv3 sysreg if necessary */ - if (vcpu->kvm->arch.vgic.vgic_model =3D=3D KVM_DEV_TYPE_ARM_VGIC_V2) { + if (vcpu->kvm->arch.vgic.vgic_model =3D=3D KVM_DEV_TYPE_ARM_VGIC_V2 || + !irqchip_in_kernel(vcpu->kvm)) { vgic_v3->vgic_hcr |=3D (ICH_HCR_EL2_TALL0 | ICH_HCR_EL2_TALL1 | ICH_HCR_EL2_TC); return; --=20 2.34.1