diff mbox series

[4/8] powerpc/64: ret_from_fork avoid restoring regs twice

Message ID 20230131165534.601490-5-npiggin@gmail.com (mailing list archive)
State Superseded
Headers show
Series powerpc: improve copy_thread | expand

Commit Message

Nicholas Piggin Jan. 31, 2023, 4:55 p.m. UTC 
If the system call return path always restores NVGPRs then there is no
need for ret_from_fork to do it. The HANDLER_RESTORE_NVGPRS does the
right thing for this.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 arch/powerpc/kernel/interrupt_64.S | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/arch/powerpc/kernel/interrupt_64.S b/arch/powerpc/kernel/interrupt_64.S
index d60e7e7564df..bac1f89501ac 100644
--- a/arch/powerpc/kernel/interrupt_64.S
+++ b/arch/powerpc/kernel/interrupt_64.S
@@ -728,14 +728,14 @@  DEFINE_FIXED_SYMBOL(__end_soft_masked, text)
 #ifdef CONFIG_PPC_BOOK3S
 _GLOBAL(ret_from_fork_scv)
 	bl	schedule_tail
-	REST_NVGPRS(r1)
+	HANDLER_RESTORE_NVGPRS()
 	li	r3,0	/* fork() return value */
 	b	.Lsyscall_vectored_common_exit
 #endif
 
 _GLOBAL(ret_from_fork)
 	bl	schedule_tail
-	REST_NVGPRS(r1)
+	HANDLER_RESTORE_NVGPRS()
 	li	r3,0	/* fork() return value */
 	b	.Lsyscall_exit