[PATCH v4 29/36] KVM: arm64: gic-v5: Hide FEAT_GCIE from NV GICv5 guests
From: Sascha Bischoff <hidden>
Date: 2026-01-28 18:08:09
Also in:
kvm, kvmarm
Subsystem:
arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds
Currently, NV guests are not supported with GICv5. Therefore, make sure that FEAT_GCIE is always hidden from such guests. Signed-off-by: Sascha Bischoff <redacted> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> --- arch/arm64/kvm/nested.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/arm64/kvm/nested.c b/arch/arm64/kvm/nested.c
index cdeeb8f09e72..66404d48405e 100644
--- a/arch/arm64/kvm/nested.c
+++ b/arch/arm64/kvm/nested.c@@ -1547,6 +1547,11 @@ u64 limit_nv_id_reg(struct kvm *kvm, u32 reg, u64 val) ID_AA64PFR1_EL1_MTE); break; + case SYS_ID_AA64PFR2_EL1: + /* GICv5 is not yet supported for NV */ + val &= ~ID_AA64PFR2_EL1_GCIE; + break; + case SYS_ID_AA64MMFR0_EL1: /* Hide ExS, Secure Memory */ val &= ~(ID_AA64MMFR0_EL1_EXS |
--
2.34.1