diff options
| author | Sascha Bischoff <Sascha.Bischoff@arm.com> | 2025-08-28 10:59:42 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2025-09-17 17:41:02 +0100 |
| commit | d5a012af348d4d84287267547eb8637b937545af (patch) | |
| tree | a89c4139b515686b84b7c09998871e90c6b493d8 | |
| parent | 9664d5810e9bc919a9a661594e01eabc80befe8a (diff) | |
KVM: arm64: Enable nested for GICv5 host with FEAT_GCIE_LEGACY
Extend the NV check to pass for a GICv5 host that has
FEAT_GCIE_LEGACY. The has_gcie_v3_compat flag is only set on GICv5
hosts (that explicitly support FEAT_GCIE_LEGACY), and hence the
explicit check for a VGIC_V5 is omitted.
As of this change, vGICv3-based VMs can run with nested on a
compatible GICv5 host.
Signed-off-by: Sascha Bischoff <sascha.bischoff@arm.com>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
| -rw-r--r-- | arch/arm64/kvm/arm.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 5bf101c869c9..49485d08ece2 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -2315,8 +2315,9 @@ static int __init init_subsystems(void) } if (kvm_mode == KVM_MODE_NV && - !(vgic_present && kvm_vgic_global_state.type == VGIC_V3)) { - kvm_err("NV support requires GICv3, giving up\n"); + !(vgic_present && (kvm_vgic_global_state.type == VGIC_V3 || + kvm_vgic_global_state.has_gcie_v3_compat))) { + kvm_err("NV support requires GICv3 or GICv5 with legacy support, giving up\n"); err = -EINVAL; goto out; } |