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| author | H.J. Lu <hjl.tools@gmail.com> | 2024-02-28 12:08:03 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2024-04-01 10:55:17 -0700 |
| commit | 853e915fdd6ae6c5f1a7a68d2594ec8dbfef1286 (patch) | |
| tree | 4daa8c3b1c53af6e65a84c94abee88b11fef669b /sysdeps/x86/include/cpu-features.h | |
| parent | a364304718725a31ab141936322855c76c73e35e (diff) | |
| download | glibc-853e915fdd6ae6c5f1a7a68d2594ec8dbfef1286.tar.gz glibc-853e915fdd6ae6c5f1a7a68d2594ec8dbfef1286.tar.xz glibc-853e915fdd6ae6c5f1a7a68d2594ec8dbfef1286.zip | |
x86-64: Update _dl_tlsdesc_dynamic to preserve AMX registers
_dl_tlsdesc_dynamic should also preserve AMX registers which are caller-saved. Add X86_XSTATE_TILECFG_ID and X86_XSTATE_TILEDATA_ID to x86-64 TLSDESC_CALL_STATE_SAVE_MASK. Compute the AMX state size and save it in xsave_state_full_size which is only used by _dl_tlsdesc_dynamic_xsave and _dl_tlsdesc_dynamic_xsavec. This fixes the AMX part of BZ #31372. Tested on AMX processor. AMX test is enabled only for compilers with the fix for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114098 GCC 14 and GCC 11/12/13 branches have the bug fix. Reviewed-by: Sunil K Pandey <skpgkp2@gmail.com> (cherry picked from commit 9b7091415af47082664717210ac49d51551456ab)
Diffstat (limited to 'sysdeps/x86/include/cpu-features.h')
| -rw-r--r-- | sysdeps/x86/include/cpu-features.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/x86/include/cpu-features.h b/sysdeps/x86/include/cpu-features.h index b9bf3115b6..cd7bd27cf3 100644 --- a/sysdeps/x86/include/cpu-features.h +++ b/sysdeps/x86/include/cpu-features.h @@ -934,6 +934,8 @@ struct cpu_features /* The full state size for XSAVE when XSAVEC is disabled by GLIBC_TUNABLES=glibc.cpu.hwcaps=-XSAVEC + + and the AMX state size when XSAVEC is available. */ unsigned int xsave_state_full_size; /* Data cache size for use in memory and string routines, typically |