[PATCH v4 03/28] arm64: hyp-stub: Don't save lr in the EL1 code

Marc Zyngier
2017-03-21T19:20:33Z

The EL2 code is not corrupting lr anymore, so don't bother preserving
it in the EL1 trampoline code.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
arch/arm64/kernel/hyp-stub.S | 4 ----
1 file changed, 4 deletions(-)

diff --git a/arch/arm64/kernel/hyp-stub.S b/arch/arm64/kernel/hyp-stub.S
index e4215ad06930..193dfb25ce2f 100644
--- a/arch/arm64/kernel/hyp-stub.S
+++ b/arch/arm64/kernel/hyp-stub.S
@@ -116,18 +116,14 @@ ENDPROC(\label)
*/

ENTRY(__hyp_get_vectors)
- str lr, [sp, #-16]!
mov x0, #HVC_GET_VECTORS
hvc #0
- ldr lr, [sp], #16
ret
ENDPROC(__hyp_get_vectors)

ENTRY(__hyp_set_vectors)
- str lr, [sp, #-16]!
mov x1, x0
mov x0, #HVC_SET_VECTORS
hvc #0
- ldr lr, [sp], #16
ret
ENDPROC(__hyp_set_vectors)
--
2.11.0