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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-02 20:12:54 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-02 20:12:54 -0800 |
| commit | 17b02809cfa77abcab155ce3afbb1467e7f0744f (patch) | |
| tree | 4bb7b08fa29e73fb29a8e56fec766643b1eaa82e /arch/powerpc/include/asm/ptrace.h | |
| parent | 9cd02bd876d3b1a5a93f0c9376f578bde03a6b26 (diff) | |
| parent | 0414855fdc4a40da05221fc6062cccbc0c30f169 (diff) | |
| download | op-kernel-dev-17b02809cfa77abcab155ce3afbb1467e7f0744f.zip op-kernel-dev-17b02809cfa77abcab155ce3afbb1467e7f0744f.tar.gz | |
Merge 3.14-rc5 into staging-next
We want those fixes in here
Diffstat (limited to 'arch/powerpc/include/asm/ptrace.h')
| -rw-r--r-- | arch/powerpc/include/asm/ptrace.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/ptrace.h b/arch/powerpc/include/asm/ptrace.h index becc08e..279b80f 100644 --- a/arch/powerpc/include/asm/ptrace.h +++ b/arch/powerpc/include/asm/ptrace.h @@ -28,11 +28,23 @@ #ifdef __powerpc64__ +/* + * Size of redzone that userspace is allowed to use below the stack + * pointer. This is 288 in the 64-bit big-endian ELF ABI, and 512 in + * the new ELFv2 little-endian ABI, so we allow the larger amount. + * + * For kernel code we allow a 288-byte redzone, in order to conserve + * kernel stack space; gcc currently only uses 288 bytes, and will + * hopefully allow explicit control of the redzone size in future. + */ +#define USER_REDZONE_SIZE 512 +#define KERNEL_REDZONE_SIZE 288 + #define STACK_FRAME_OVERHEAD 112 /* size of minimum stack frame */ #define STACK_FRAME_LR_SAVE 2 /* Location of LR in stack frame */ #define STACK_FRAME_REGS_MARKER ASM_CONST(0x7265677368657265) #define STACK_INT_FRAME_SIZE (sizeof(struct pt_regs) + \ - STACK_FRAME_OVERHEAD + 288) + STACK_FRAME_OVERHEAD + KERNEL_REDZONE_SIZE) #define STACK_FRAME_MARKER 12 /* Size of dummy stack frame allocated when calling signal handler. */ @@ -41,6 +53,8 @@ #else /* __powerpc64__ */ +#define USER_REDZONE_SIZE 0 +#define KERNEL_REDZONE_SIZE 0 #define STACK_FRAME_OVERHEAD 16 /* size of minimum stack frame */ #define STACK_FRAME_LR_SAVE 1 /* Location of LR in stack frame */ #define STACK_FRAME_REGS_MARKER ASM_CONST(0x72656773) |
