From 9b7091415af47082664717210ac49d51551456ab Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Wed, 28 Feb 2024 12:08:03 -0800 Subject: 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 --- sysdeps/x86/cpu-features-offsets.sym | 1 + 1 file changed, 1 insertion(+) (limited to 'sysdeps/x86/cpu-features-offsets.sym') diff --git a/sysdeps/x86/cpu-features-offsets.sym b/sysdeps/x86/cpu-features-offsets.sym index 6a8fd29813..21fc88d651 100644 --- a/sysdeps/x86/cpu-features-offsets.sym +++ b/sysdeps/x86/cpu-features-offsets.sym @@ -3,3 +3,4 @@ #include XSAVE_STATE_SIZE_OFFSET offsetof (struct cpu_features, xsave_state_size) +XSAVE_STATE_FULL_SIZE_OFFSET offsetof (struct cpu_features, xsave_state_full_size) -- cgit 1.4.1