ARM: hyp-stub: Zero r0 on successful stub handling
We now return HVC_STUB_ERR when a stub hypercall fails, but we
leave whatever was in r0 on success. Zeroing it on return seems
like a good idea.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
diff --git a/arch/arm/kvm/init.S b/arch/arm/kvm/init.S
index 87bcd7a..570ed4a 100644
--- a/arch/arm/kvm/init.S
+++ b/arch/arm/kvm/init.S
@@ -155,8 +155,10 @@
b exit
1: ldr r0, =HVC_STUB_ERR
+ eret
exit:
+ mov r0, #0
eret
ENDPROC(__kvm_handle_stub_hvc)