diff mbox series

[v6,28/33] arm64: sleep: Properly set frame pointer before call

Message ID 20220623014917.199563-29-chenzhongjin@huawei.com (mailing list archive)
State New, archived
Headers show
Series objtool: add base support for arm64 | expand

Commit Message

Chen Zhongjin June 23, 2022, 1:49 a.m. UTC 
In __cpu_suspend_enter, the FP and LR are properly saved on the stack to
form a stack frame, but the frame pointer is not set afterwards.

Have the frame pointer point to the new frame.

Signed-off-by: Julien Thierry <jthierry@redhat.com>
Signed-off-by: Chen Zhongjin <chenzhongjin@huawei.com>
---
 arch/arm64/kernel/sleep.S | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/arch/arm64/kernel/sleep.S b/arch/arm64/kernel/sleep.S
index 799ec01b0649..7fd276f3c532 100644
--- a/arch/arm64/kernel/sleep.S
+++ b/arch/arm64/kernel/sleep.S
@@ -92,6 +92,7 @@  SYM_FUNC_START(__cpu_suspend_enter)
 	str	x0, [x1]
 	add	x0, x0, #SLEEP_STACK_DATA_SYSTEM_REGS
 	stp	x29, lr, [sp, #-16]!
+	mov	x29, sp
 	bl	cpu_do_suspend
 	ldp	x29, lr, [sp], #16
 	mov	x0, #1