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* [glibc/release/2.40/master] x86: Tunables may incorrectly set Prefer_PMINUB_for_stringop (bug 32047)
@ 2024-08-02 16:30 Florian Weimer
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From: Florian Weimer @ 2024-08-02 16:30 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=aa533d58ff12e27771d9c960a727d74992a3f2a3
commit aa533d58ff12e27771d9c960a727d74992a3f2a3
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Aug 2 15:22:14 2024 +0200
x86: Tunables may incorrectly set Prefer_PMINUB_for_stringop (bug 32047)
Fixes commit 5bcf6265f215326d14dfacdce8532792c2c7f8f8 ("x86:
Disable non-temporal memset on Skylake Server").
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
(cherry picked from commit 7a630f7d3392ca391a399486ce2846f9e4b4ee63)
Diff:
---
sysdeps/x86/cpu-tunables.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/sysdeps/x86/cpu-tunables.c b/sysdeps/x86/cpu-tunables.c
index ae9dcd6180..ccc6b64dc2 100644
--- a/sysdeps/x86/cpu-tunables.c
+++ b/sysdeps/x86/cpu-tunables.c
@@ -248,6 +248,7 @@ TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *valp)
CHECK_GLIBC_IFUNC_PREFERRED_BOTH (n, cpu_features,
Avoid_Non_Temporal_Memset, 25);
}
+ break;
case 26:
{
CHECK_GLIBC_IFUNC_PREFERRED_NEED_BOTH
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2024-08-02 16:30 [glibc/release/2.40/master] x86: Tunables may incorrectly set Prefer_PMINUB_for_stringop (bug 32047) Florian Weimer
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