Commit 5088a624 authored by Nicholas Piggin's avatar Nicholas Piggin Committed by Michael Ellerman

powerpc/64: ret_from_fork avoid restoring regs twice

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: default avatarNicholas Piggin <npiggin@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230325122904.2375060-5-npiggin@gmail.com
parent af5ca9d5
...@@ -728,14 +728,14 @@ DEFINE_FIXED_SYMBOL(__end_soft_masked, text) ...@@ -728,14 +728,14 @@ DEFINE_FIXED_SYMBOL(__end_soft_masked, text)
#ifdef CONFIG_PPC_BOOK3S #ifdef CONFIG_PPC_BOOK3S
_GLOBAL(ret_from_fork_scv) _GLOBAL(ret_from_fork_scv)
bl schedule_tail bl schedule_tail
REST_NVGPRS(r1) HANDLER_RESTORE_NVGPRS()
li r3,0 /* fork() return value */ li r3,0 /* fork() return value */
b .Lsyscall_vectored_common_exit b .Lsyscall_vectored_common_exit
#endif #endif
_GLOBAL(ret_from_fork) _GLOBAL(ret_from_fork)
bl schedule_tail bl schedule_tail
REST_NVGPRS(r1) HANDLER_RESTORE_NVGPRS()
li r3,0 /* fork() return value */ li r3,0 /* fork() return value */
b .Lsyscall_exit b .Lsyscall_exit
......
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