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| author |  Nicholas Piggin <npiggin@gmail.com>
| 2023-03-25 22:29:00 +1000 |
|---|---|---|
| committer |  Michael Ellerman <mpe@ellerman.id.au>
| 2023-04-11 23:13:32 +1000 |
| commit | 5088a6246bd3dcfea504376f356683f750136f7f (patch) | |
| tree | 5c05ad5753403bafde67c2575001e9de92efe33c /arch/powerpc/kernel/interrupt_64.S | |
| parent | powerpc: use switch frame for ret_from_kernel_thread parameters (diff) | |
| download | linux-5088a6246bd3dcfea504376f356683f750136f7f.tar.gz linux-5088a6246bd3dcfea504376f356683f750136f7f.tar.bz2 linux-5088a6246bd3dcfea504376f356683f750136f7f.zip | |
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: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230325122904.2375060-5-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/kernel/interrupt_64.S')
| -rw-r--r-- | arch/powerpc/kernel/interrupt_64.S | 4 |
1 files changed, 2 insertions, 2 deletions
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 |