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From: H.J. Lu <hjl@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc] <sys/platform/x86.h>: Add LASS support Date: Wed, 5 Apr 2023 22:44:38 +0000 (GMT) [thread overview] Message-ID: <20230405224438.EB0A2385840F@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=aa528a579b3fc98eab43986619087cafe3f260d0 commit aa528a579b3fc98eab43986619087cafe3f260d0 Author: H.J. Lu <hjl.tools@gmail.com> Date: Wed Apr 5 09:21:34 2023 -0700 <sys/platform/x86.h>: Add LASS support Add Linear Address Space Separation (LASS) support to <sys/platform/x86.h>. Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com> Diff: --- manual/platform.texi | 3 +++ sysdeps/x86/bits/platform/x86.h | 1 + sysdeps/x86/tst-get-cpu-features.c | 1 + 3 files changed, 5 insertions(+) diff --git a/manual/platform.texi b/manual/platform.texi index a6e33b1572..be04194c88 100644 --- a/manual/platform.texi +++ b/manual/platform.texi @@ -406,6 +406,9 @@ the indirect branch predictor barrier (IBPB). @item @code{LAM} -- Linear Address Masking. +@item +@code{LASS} -- Linear Address Space Separation. + @item @code{LBR} -- Architectural LBR. diff --git a/sysdeps/x86/bits/platform/x86.h b/sysdeps/x86/bits/platform/x86.h index 6fc3b69651..c9ee8fcf90 100644 --- a/sysdeps/x86/bits/platform/x86.h +++ b/sysdeps/x86/bits/platform/x86.h @@ -291,6 +291,7 @@ enum x86_cpu_RAO_INT = x86_cpu_index_7_ecx_1_eax + 3, x86_cpu_AVX_VNNI = x86_cpu_index_7_ecx_1_eax + 4, x86_cpu_AVX512_BF16 = x86_cpu_index_7_ecx_1_eax + 5, + x86_cpu_LASS = x86_cpu_index_7_ecx_1_eax + 6, x86_cpu_FZLRM = x86_cpu_index_7_ecx_1_eax + 10, x86_cpu_FSRS = x86_cpu_index_7_ecx_1_eax + 11, x86_cpu_FSRCS = x86_cpu_index_7_ecx_1_eax + 12, diff --git a/sysdeps/x86/tst-get-cpu-features.c b/sysdeps/x86/tst-get-cpu-features.c index 6a3f29db98..9da561a559 100644 --- a/sysdeps/x86/tst-get-cpu-features.c +++ b/sysdeps/x86/tst-get-cpu-features.c @@ -203,6 +203,7 @@ do_test (void) CHECK_CPU_FEATURE_PRESENT (RAO_INT); CHECK_CPU_FEATURE_PRESENT (AVX_VNNI); CHECK_CPU_FEATURE_PRESENT (AVX512_BF16); + CHECK_CPU_FEATURE_PRESENT (LASS); CHECK_CPU_FEATURE_PRESENT (FZLRM); CHECK_CPU_FEATURE_PRESENT (FSRS); CHECK_CPU_FEATURE_PRESENT (FSRCS);
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