When entering a L2 guest (nested virt enabled, but not in hypervisor
context), we need to honor the traps the L1 guest has asked enabled.
For now, just OR the guest's HCR_EL2 into the host's. We may have to do
some filtering in the future though.
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
---
arch/arm64/kvm/hyp/vhe/switch.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/kvm/hyp/vhe/switch.c b/arch/arm64/kvm/hyp/vhe/switch.c
index b53de6863972..2725dc62ab09 100644
--- a/arch/arm64/kvm/hyp/vhe/switch.c
+++ b/arch/arm64/kvm/hyp/vhe/switch.c
@@ -78,6 +78,8 @@ static void __activate_traps(struct kvm_vcpu *vcpu)
if (!vcpu_el2_tge_is_set(vcpu))
hcr |= HCR_AT | HCR_TTLB;
}
+ } else if (nested_virt_in_use(vcpu)) {
+ hcr |= __vcpu_sys_reg(vcpu, HCR_EL2);
}
___activate_traps(vcpu, hcr);
--
2.29.2
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