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| author | Florian Weimer <fweimer@redhat.com> | 2021-12-03 16:28:07 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2021-12-03 20:43:31 +0100 |
| commit | 23c77f60181eb549f11ec2f913b4270af29eee38 (patch) | |
| tree | 9436a2b96bea5e71e47306bb5b85eeb7f13992c1 /nptl/descr.h | |
| parent | 0656b649c56ea51cceb86e94842d89946cee919b (diff) | |
| download | glibc-23c77f60181eb549f11ec2f913b4270af29eee38.tar.gz glibc-23c77f60181eb549f11ec2f913b4270af29eee38.tar.xz glibc-23c77f60181eb549f11ec2f913b4270af29eee38.zip | |
nptl: Increase default TCB alignment to 32
rseq support will use a 32-byte aligned field in struct pthread, so the whole struct needs to have at least that alignment. nptl/tst-tls3mod.c uses TCB_ALIGNMENT, therefore include <descr.h> to obtain the fallback definition. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
Diffstat (limited to 'nptl/descr.h')
| -rw-r--r-- | nptl/descr.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/nptl/descr.h b/nptl/descr.h index 41ee56feb2..af2a6ab87a 100644 --- a/nptl/descr.h +++ b/nptl/descr.h @@ -36,7 +36,9 @@ #include <tls-internal-struct.h> #ifndef TCB_ALIGNMENT -# define TCB_ALIGNMENT sizeof (double) +# define TCB_ALIGNMENT 32 +#elif TCB_ALIGNMENT < 32 +# error TCB_ALIGNMENT must be at least 32 #endif |