Restores caller's toc pointer to r2, on a sibling call this will
uncorrupt the caller's toc pointer and otherwise will be redundant
Signed-off-by: Ryan Sullivan <rysul...@redhat.com>
---
arch/powerpc/kernel/trace/ftrace_entry.S | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/powerpc/kernel/trace/ftrace_entry.S
b/arch/powerpc/kernel/trace/ftrace_entry.S
index 76dbe9fd2c0f..4dfbe6076ad1 100644
--- a/arch/powerpc/kernel/trace/ftrace_entry.S
+++ b/arch/powerpc/kernel/trace/ftrace_entry.S
@@ -244,6 +244,9 @@ livepatch_handler:
mtlr r12
ld r2, -24(r11)
+ /* Restore toc to caller's stack in case of sibling call */
+ std r2, 24(r1)
+
/* Pop livepatch stack frame */
ld r12, PACA_THREAD_INFO(r13)
subi r11, r11, 24
--
2.44.0
