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| author | Nicholas Piggin <npiggin@gmail.com> | 2022-11-27 22:49:40 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-12-02 17:54:09 +1100 |
| commit | 90f1b43196c5e79f6c986a359011a19857984c27 (patch) | |
| tree | af5ff5534895e1da6b5672b58a7292726e5ba8d0 /arch/powerpc/kernel/head_40x.S | |
| parent | 4cefb0f6c555971b3e6544a9b15470f9d1f12089 (diff) | |
| download | linux-90f1b43196c5e79f6c986a359011a19857984c27.tar.bz2 | |
powerpc: allow minimum sized kernel stack frames
This affects only 64-bit ELFv2 kernels, and reduces the minimum
asm-created stack frame size from 112 to 32 byte on those kernels.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221127124942.1665522-16-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/kernel/head_40x.S')
| -rw-r--r-- | arch/powerpc/kernel/head_40x.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S index 088f500896c7..918547b93b5e 100644 --- a/arch/powerpc/kernel/head_40x.S +++ b/arch/powerpc/kernel/head_40x.S @@ -602,7 +602,7 @@ start_here: lis r1,init_thread_union@ha addi r1,r1,init_thread_union@l li r0,0 - stwu r0,THREAD_SIZE-STACK_FRAME_OVERHEAD(r1) + stwu r0,THREAD_SIZE-STACK_FRAME_MIN_SIZE(r1) bl early_init /* We have to do this with MMU on */ |