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glibc
x86-haswell-string-flags.patch
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File x86-haswell-string-flags.patch of Package glibc
2018-10-23 Adhemerval Zanella <adhemerval.zanella@linaro.org> [BZ #23709] * sysdeps/x86/cpu-features.c (init_cpu_features): Set TSX bits independently of other flags. 2017-12-18 Joseph Myers <joseph@codesourcery.com> * nptl/tst-attr3.c: Include <libc-diag.h>. Index: glibc-2.26/sysdeps/x86/cpu-features.c =================================================================== --- glibc-2.26.orig/sysdeps/x86/cpu-features.c +++ glibc-2.26/sysdeps/x86/cpu-features.c @@ -281,7 +281,13 @@ init_cpu_features (struct cpu_features * | bit_arch_Fast_Unaligned_Copy | bit_arch_Prefer_PMINUB_for_stringop); break; + } + /* Disable TSX on some Haswell processors to avoid TSX on kernels that + weren't updated with the latest microcode package (which disables + broken feature by default). */ + switch (model) + { case 0x3f: /* Xeon E7 v3 with stepping >= 4 has working TSX. */ if (stepping >= 4)
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