esr_el2 field of struct kvm_vcpu_fault_info has u32 type. It should be stored as word. Current code works in LE case because existing puts least significant word of x1 into esr_el2, and it puts most significant work of x1 into next field, which accidentally is OK because it is updated again by next instruction. But existing code breaks in BE case.
Signed-off-by: Victor Kamensky victor.kamensky@linaro.org Acked-by: Christoffer Dall christoffer.dall@linaro.org Acked-by: Marc Zyngier marc.zyngier@arm.com --- arch/arm64/kvm/hyp.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kvm/hyp.S b/arch/arm64/kvm/hyp.S index 2c56012..0620691 100644 --- a/arch/arm64/kvm/hyp.S +++ b/arch/arm64/kvm/hyp.S @@ -824,7 +824,7 @@ el1_trap: mrs x2, far_el2
2: mrs x0, tpidr_el2 - str x1, [x0, #VCPU_ESR_EL2] + str w1, [x0, #VCPU_ESR_EL2] str x2, [x0, #VCPU_FAR_EL2] str x3, [x0, #VCPU_HPFAR_EL2]