diff options
| author | Tom Lendacky <[email protected]> | 2017-07-17 16:10:34 -0500 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2017-07-18 20:23:20 +0200 |
| commit | 7375ae3a0b79ea072f4c672039f08f5db633b9e1 (patch) | |
| tree | b77706c40b7dd5dfe3f534d2ccc7036734600b42 | |
| parent | e505371dd83963caae1a37ead9524e8d997341be (diff) | |
compiler-gcc.h: Introduce __nostackprotector function attribute
Create a new function attribute, __nostackprotector, that can used to turn off
stack protection on a per function basis.
Signed-off-by: Tom Lendacky <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Cc: Alexander Potapenko <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Brijesh Singh <[email protected]>
Cc: Dave Young <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: Konrad Rzeszutek Wilk <[email protected]>
Cc: Larry Woodman <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Matt Fleming <[email protected]>
Cc: Michael S. Tsirkin <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Radim Krčmář <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Toshimitsu Kani <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/0576fd5c74440ad0250f16ac6609ecf587812456.1500319216.git.thomas.lendacky@amd.com
Signed-off-by: Ingo Molnar <[email protected]>
| -rw-r--r-- | include/linux/compiler-gcc.h | 2 | ||||
| -rw-r--r-- | include/linux/compiler.h | 4 |
2 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index cd4bbe8242bd..c28cedde973f 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -166,6 +166,8 @@ #if GCC_VERSION >= 40100 # define __compiletime_object_size(obj) __builtin_object_size(obj, 0) + +#define __nostackprotector __attribute__((__optimize__("no-stack-protector"))) #endif #if GCC_VERSION >= 40300 diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 219f82f3ec1a..3f8c88e29a46 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -470,6 +470,10 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s #define __visible #endif +#ifndef __nostackprotector +# define __nostackprotector +#endif + /* * Assume alignment of return value. */ |