[PATCH v6 28/33] arm64: sleep: Properly set frame pointer before call
From: Chen Zhongjin <hidden>
Date: 2022-06-23 01:54:07
Also in:
linux-arch, linux-arm-kernel, linux-kbuild, live-patching, lkml
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
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 <redacted> Signed-off-by: Chen Zhongjin <redacted> --- arch/arm64/kernel/sleep.S | 1 + 1 file changed, 1 insertion(+)
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
--
2.17.1