arm64: hyp-stub: Don't save lr in the EL1 code

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

Acked-by: Catalin Marinas <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Signed-off-by: Christoffer Dall <[email protected]>

diff --git a/arch/arm64/kernel/hyp-stub.S b/arch/arm64/kernel/hyp-stub.S
index e4215ad06930addb74f1f5839a8ad183ea7b5dc3..193dfb25ce2f8b41c4fe4ef2302ea2cab6b22057 100644 (file)
--- 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)