diff options
| 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/misc_32.S | |
| parent | 4cefb0f6c555971b3e6544a9b15470f9d1f12089 (diff) | |
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/misc_32.S')
| -rw-r--r-- | arch/powerpc/kernel/misc_32.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index e5127b19fec2..daf8f87d2372 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -382,7 +382,7 @@ EXPORT_SYMBOL(__bswapdi2) _GLOBAL(start_secondary_resume) /* Reset stack */ rlwinm r1, r1, 0, 0, 31 - THREAD_SHIFT - addi r1,r1,THREAD_SIZE-STACK_FRAME_OVERHEAD + addi r1,r1,THREAD_SIZE-STACK_FRAME_MIN_SIZE li r3,0 stw r3,0(r1) /* Zero the stack frame pointer */ bl start_secondary |