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| author | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-25 11:24:24 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-25 11:24:24 -0400 |
| commit | b8917b4ae44d1b945f6fba3d8ee6777edb44633b (patch) | |
| tree | 0e3b6b1113b40d444f078b3bedcd98b93ac78f4a /include/linux/const.h | |
| parent | 79b1e56509beb8d53b2b92f27555cd2175c67b8a (diff) | |
| parent | 188982cda00ebfe28b50c2905d9bbaa2e9a001b9 (diff) | |
Merge tag 'kvmarm-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 updates for v5.14.
- Add MTE support in guests, complete with tag save/restore interface
- Reduce the impact of CMOs by moving them in the page-table code
- Allow device block mappings at stage-2
- Reduce the footprint of the vmemmap in protected mode
- Support the vGIC on dumb systems such as the Apple M1
- Add selftest infrastructure to support multiple configuration
and apply that to PMU/non-PMU setups
- Add selftests for the debug architecture
- The usual crop of PMU fixes
Diffstat (limited to 'include/linux/const.h')
| -rw-r--r-- | include/linux/const.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/const.h b/include/linux/const.h index 81b8aae5a855..435ddd72d2c4 100644 --- a/include/linux/const.h +++ b/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 */ |