[PATCH v1 1/2] KVM: arm64: nv: fix S2 translation for nVHE guests

[Volodymyr Babchuk]

According to ARM architecture specification (ARM DDI 0487 L.a, section
C5.4.3), Stage 2 translation should be skipped when VHE is active, or,
in other words, E2H bit is set. Fix the code by inverting both check
and comment.

Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk at epam.com>
---
 arch/arm64/kvm/at.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kvm/at.c b/arch/arm64/kvm/at.c
index a25be111cd8f8..5e7c3fb01273c 100644
--- a/arch/arm64/kvm/at.c
+++ b/arch/arm64/kvm/at.c
@@ -1412,10 +1412,10 @@ void __kvm_at_s12(struct kvm_vcpu *vcpu, u32 op, u64 vaddr)
 		return;
 
 	/*
-	 * If we only have a single stage of translation (E2H=0 or
+	 * If we only have a single stage of translation (E2H=1 or
 	 * TGE=1), exit early. Same thing if {VM,DC}=={0,0}.
 	 */
-	if (!vcpu_el2_e2h_is_set(vcpu) || vcpu_el2_tge_is_set(vcpu) ||
+	if (vcpu_el2_e2h_is_set(vcpu) || vcpu_el2_tge_is_set(vcpu) ||
 	    !(vcpu_read_sys_reg(vcpu, HCR_EL2) & (HCR_VM | HCR_DC)))
 		return;
 
-- 
2.50.1