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| author | Marc Zyngier <marc.zyngier@arm.com> | 2017-04-03 19:38:06 +0100 |
|---|---|---|
| committer | Christoffer Dall <cdall@linaro.org> | 2017-04-09 07:49:36 -0700 |
| commit | d9118c87d21ee799058a55eeae84d392ae887c91 (patch) | |
| tree | 6e8afb42ef2aaec6102052e87cc76142bb065266 /arch/arm/kernel | |
| parent | af42f20480bf13d9dbf099ccca65f3de8c44fcaf (diff) | |
| download | blackbird-op-linux-d9118c87d21ee799058a55eeae84d392ae887c91.tar.gz blackbird-op-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/kernel')
| -rw-r--r-- | arch/arm/kernel/hyp-stub.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/kernel/hyp-stub.S b/arch/arm/kernel/hyp-stub.S index 918c64f17128..d8523cc47a54 100644 --- a/arch/arm/kernel/hyp-stub.S +++ b/arch/arm/kernel/hyp-stub.S @@ -215,8 +215,10 @@ __hyp_stub_do_trap: beq __hyp_stub_exit ldr r0, =HVC_STUB_ERR + __ERET __hyp_stub_exit: + mov r0, #0 __ERET ENDPROC(__hyp_stub_do_trap) |
