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 <[email protected]> --- arch/arm64/kvm/hyp/vhe/switch.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm64/kvm/hyp/vhe/switch.c b/arch/arm64/kvm/hyp/vhe/switch.c index 71a4914761d0..ef4488db6dc1 100644 --- a/arch/arm64/kvm/hyp/vhe/switch.c +++ b/arch/arm64/kvm/hyp/vhe/switch.c @@ -79,6 +79,11 @@ 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)) { + u64 vhcr_el2 = __vcpu_sys_reg(vcpu, HCR_EL2); + + vhcr_el2 &= ~HCR_GUEST_NV_FILTER_FLAGS; + hcr |= vhcr_el2; } ___activate_traps(vcpu, hcr); -- 2.30.2 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
