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| author |   Borislav Petkov <bp@suse.de> | 2021-06-23 17:42:12 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2021-06-23 17:43:38 +0200 |
| commit | c4cf5f61982e35348f522464010445efcc0aeb60 (patch) | |
| tree | b3e65bfae5786e33ac82b30d6801983b10934a2f /tools/include/linux/const.h | |
| parent | selftests/x86: Test signal frame XSTATE header corruption handling (diff) | |
| parent | x86/fpu: Make init_fpstate correct with optimized XSAVE (diff) | |
| download | linux-dev-c4cf5f61982e35348f522464010445efcc0aeb60.tar.xz linux-dev-c4cf5f61982e35348f522464010445efcc0aeb60.zip | |
Merge x86/urgent into x86/fpu
Pick up dependent changes which either went mainline (x86/urgent is
based on -rc7 and that contains them) as urgent fixes and the current
x86/urgent branch which contains two more urgent fixes, so that the
bigger FPU rework can base off ontop.
Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'tools/include/linux/const.h')
| -rw-r--r-- | tools/include/linux/const.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/include/linux/const.h b/tools/include/linux/const.h index 81b8aae5a855..435ddd72d2c4 100644 --- a/tools/include/linux/const.h +++ b/tools/include/linux/const.h @@ -3,4 +3,12 @@ #include <vdso/const.h> +/* + * This returns a constant expression while determining if an argument is + * a constant expression, most importantly without evaluating the argument. + * Glory to Martin Uecker <Martin.Uecker@med.uni-goettingen.de> + */ +#define __is_constexpr(x) \ + (sizeof(int) == sizeof(*(8 ? ((void *)((long)(x) * 0l)) : (int *)8))) + #endif /* _LINUX_CONST_H */ |