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| author | Marc Zyngier <marc.zyngier@arm.com> | 2017-04-03 20:38:06 +0200 |
|---|---|---|
| committer | Christoffer Dall <cdall@linaro.org> | 2017-04-09 16:49:36 +0200 |
| commit | d9118c87d21ee799058a55eeae84d392ae887c91 (patch) | |
| tree | 6e8afb42ef2aaec6102052e87cc76142bb065266 /arch/arm/kvm | |
| parent | arm64: hyp-stub: Zero x0 on successful stub handling (diff) | |
| download | linux-d9118c87d21ee799058a55eeae84d392ae887c91.tar.xz linux-d9118c87d21ee799058a55eeae84d392ae887c91.zip | |
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>
Diffstat (limited to 'arch/arm/kvm')
| -rw-r--r-- | arch/arm/kvm/init.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/kvm/init.S b/arch/arm/kvm/init.S index 87bcd7ae4552..570ed4a9c261 100644 --- a/arch/arm/kvm/init.S +++ b/arch/arm/kvm/init.S @@ -155,8 +155,10 @@ reset: b exit 1: ldr r0, =HVC_STUB_ERR + eret exit: + mov r0, #0 eret ENDPROC(__kvm_handle_stub_hvc) |