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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/process.c | |
| parent | 4cefb0f6c555971b3e6544a9b15470f9d1f12089 (diff) | |
| download | linux-90f1b43196c5e79f6c986a359011a19857984c27.tar.gz linux-90f1b43196c5e79f6c986a359011a19857984c27.tar.bz2 linux-90f1b43196c5e79f6c986a359011a19857984c27.zip | |
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/process.c')
| -rw-r--r-- | arch/powerpc/kernel/process.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 9446bee8ca32..edb46d0806ef 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -2180,7 +2180,7 @@ int validate_sp_size(unsigned long sp, struct task_struct *p, int validate_sp(unsigned long sp, struct task_struct *p) { - return validate_sp_size(sp, p, STACK_FRAME_OVERHEAD); + return validate_sp_size(sp, p, STACK_FRAME_MIN_SIZE); } static unsigned long ___get_wchan(struct task_struct *p) |