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import glibc-2.28-170.el8

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CentOS Sources 2021-11-19 04:21:30 +00:00 committed by Stepan Oksanichenko
parent b6400f3e09
commit 759ed1ddc8
3 changed files with 142 additions and 1 deletions
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90
SOURCES/glibc-rh1937515.patch Normal file
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Based on the following commit, adjusted for glibc-2.28 in RHEL-8:
commit 27f74636752d0c4438cf8346cf2a76b6fcf3be16
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Fri Mar 19 06:15:37 2021 -0700
x86: Properly disable XSAVE related features [BZ #27605]
1. Support GLIBC_TUNABLES=glibc.cpu.hwcaps=-XSAVE.
2. Disable all features which depend on XSAVE:
a. If OSXSAVE is disabled by glibc tunables. Or
b. If both XSAVE and XSAVEC aren't usable.
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
index 805d00a43309fc23..910425053d9e226f 100644
--- a/sysdeps/x86/cpu-features.c
+++ b/sysdeps/x86/cpu-features.c
@@ -654,6 +654,60 @@ no_cpuid:
= TUNABLE_GET (x86_data_cache_size, long int, NULL);
cpu_features->shared_cache_size
= TUNABLE_GET (x86_shared_cache_size, long int, NULL);
+
+ bool disable_xsave_features = false;
+
+ if (!CPU_FEATURE_USABLE_P (cpu_features, OSXSAVE))
+ {
+ /* These features are usable only if OSXSAVE is usable. */
+ CPU_FEATURE_UNSET (cpu_features, XSAVE);
+ CPU_FEATURE_UNSET (cpu_features, XSAVEOPT);
+ CPU_FEATURE_UNSET (cpu_features, XSAVEC);
+ CPU_FEATURE_UNSET (cpu_features, XGETBV_ECX_1);
+ CPU_FEATURE_UNSET (cpu_features, XFD);
+
+ disable_xsave_features = true;
+ }
+
+ if (disable_xsave_features
+ || (!CPU_FEATURE_USABLE_P (cpu_features, XSAVE)
+ && !CPU_FEATURE_USABLE_P (cpu_features, XSAVEC)))
+ {
+ /* Clear xsave_state_size if both XSAVE and XSAVEC aren't usable. */
+ cpu_features->xsave_state_size = 0;
+
+ CPU_FEATURE_UNSET (cpu_features, AVX);
+ CPU_FEATURE_UNSET (cpu_features, AVX2);
+ CPU_FEATURE_UNSET (cpu_features, AVX_VNNI);
+ CPU_FEATURE_UNSET (cpu_features, FMA);
+ CPU_FEATURE_UNSET (cpu_features, VAES);
+ CPU_FEATURE_UNSET (cpu_features, VPCLMULQDQ);
+ CPU_FEATURE_UNSET (cpu_features, XOP);
+ CPU_FEATURE_UNSET (cpu_features, F16C);
+ CPU_FEATURE_UNSET (cpu_features, AVX512F);
+ CPU_FEATURE_UNSET (cpu_features, AVX512CD);
+ CPU_FEATURE_UNSET (cpu_features, AVX512ER);
+ CPU_FEATURE_UNSET (cpu_features, AVX512PF);
+ CPU_FEATURE_UNSET (cpu_features, AVX512VL);
+ CPU_FEATURE_UNSET (cpu_features, AVX512DQ);
+ CPU_FEATURE_UNSET (cpu_features, AVX512BW);
+ CPU_FEATURE_UNSET (cpu_features, AVX512_4FMAPS);
+ CPU_FEATURE_UNSET (cpu_features, AVX512_4VNNIW);
+ CPU_FEATURE_UNSET (cpu_features, AVX512_BITALG);
+ CPU_FEATURE_UNSET (cpu_features, AVX512_IFMA);
+ CPU_FEATURE_UNSET (cpu_features, AVX512_VBMI);
+ CPU_FEATURE_UNSET (cpu_features, AVX512_VBMI2);
+ CPU_FEATURE_UNSET (cpu_features, AVX512_VNNI);
+ CPU_FEATURE_UNSET (cpu_features, AVX512_VPOPCNTDQ);
+ CPU_FEATURE_UNSET (cpu_features, AVX512_VP2INTERSECT);
+ CPU_FEATURE_UNSET (cpu_features, AVX512_BF16);
+ CPU_FEATURE_UNSET (cpu_features, AVX512_FP16);
+ CPU_FEATURE_UNSET (cpu_features, AMX_BF16);
+ CPU_FEATURE_UNSET (cpu_features, AMX_TILE);
+ CPU_FEATURE_UNSET (cpu_features, AMX_INT8);
+
+ CPU_FEATURE_UNSET (cpu_features, FMA4);
+ }
#endif
/* Reuse dl_platform, dl_hwcap and dl_hwcap_mask for x86. */
diff --git a/sysdeps/x86/cpu-tunables.c b/sysdeps/x86/cpu-tunables.c
index 0728023007a0f423..3173b2b959ca88f9 100644
--- a/sysdeps/x86/cpu-tunables.c
+++ b/sysdeps/x86/cpu-tunables.c
@@ -168,6 +168,7 @@ TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *valp)
CHECK_GLIBC_IFUNC_CPU_OFF (n, cpu_features, MOVBE, 5);
CHECK_GLIBC_IFUNC_CPU_OFF (n, cpu_features, SHSTK, 5);
CHECK_GLIBC_IFUNC_CPU_OFF (n, cpu_features, SSSE3, 5);
+ CHECK_GLIBC_IFUNC_CPU_OFF (n, cpu_features, XSAVE, 5);
}
break;
case 6:

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Based on the following patch posted upstream and awaiting IBM review:
https://sourceware.org/pipermail/libc-alpha/2021-November/132856.html
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Nov 9 18:50:55 2021 +0100
s390: Use long branches across object boundaries (jgh instead of jh)
Depending on the layout chosen by the linker, the 16-bit displacement
of the jh instruction is insufficient to reach the target label.
Analysis of the linker failure was carried out by Nick Clifton.
Tested on a z13 and z15, s390x-linux-gnu only.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
diff --git a/sysdeps/s390/memmem-arch13.S b/sysdeps/s390/memmem-arch13.S
index b59d60acf0f6aaa0..4faede0cd2f942e3 100644
--- a/sysdeps/s390/memmem-arch13.S
+++ b/sysdeps/s390/memmem-arch13.S
@@ -41,7 +41,7 @@ ENTRY(MEMMEM_ARCH13)
# error The arch13 variant of memmem needs the z13 variant of memmem!
# endif
clgfi %r5,9
- jh MEMMEM_Z13
+ jgh MEMMEM_Z13
aghik %r0,%r5,-1 /* vll needs highest index. */
bc 4,0(%r14) /* cc==1: return if needle-len == 0. */
diff --git a/sysdeps/s390/strstr-arch13.S b/sysdeps/s390/strstr-arch13.S
index faa969849e09c2e1..ffc34c2523ce635a 100644
--- a/sysdeps/s390/strstr-arch13.S
+++ b/sysdeps/s390/strstr-arch13.S
@@ -49,7 +49,7 @@ ENTRY(STRSTR_ARCH13)
# error The arch13 variant of strstr needs the z13 variant of strstr!
# endif
clgfi %r4,9
- jh STRSTR_Z13
+ jgh STRSTR_Z13
/* In case of a partial match, the vstrs instruction returns the index
of the partial match in a vector-register. Then we have to

11
SPECS/glibc.spec
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@ -1,6 +1,6 @@
%define glibcsrcdir glibc-2.28 %define glibcsrcdir glibc-2.28
%define glibcversion 2.28 %define glibcversion 2.28
%define glibcrelease 168%{?dist} %define glibcrelease 170%{?dist}
# Pre-release tarballs are pulled in from git using a command that is # Pre-release tarballs are pulled in from git using a command that is
# effectively: # effectively:
# #
@ -778,6 +778,8 @@ Patch600: glibc-rh1971664-15.patch
Patch601: glibc-rh1977614.patch Patch601: glibc-rh1977614.patch
Patch602: glibc-rh1983203-1.patch Patch602: glibc-rh1983203-1.patch
Patch603: glibc-rh1983203-2.patch Patch603: glibc-rh1983203-2.patch
Patch604: glibc-rh2021452.patch
Patch605: glibc-rh1937515.patch
############################################################################## ##############################################################################
# Continued list of core "glibc" package information: # Continued list of core "glibc" package information:
@ -2728,6 +2730,13 @@ fi
%files -f compat-libpthread-nonshared.filelist -n compat-libpthread-nonshared %files -f compat-libpthread-nonshared.filelist -n compat-libpthread-nonshared
%changelog %changelog
* Wed Nov 10 2021 Arjun Shankar <arjun@redhat.com> - 2.28-170
- x86: Properly disable XSAVE related features when its use is disabled via
tunables (#1937515)
* Wed Nov 10 2021 Arjun Shankar <arjun@redhat.com> - 2.28-169
- s390: Use long branches across object boundaries (#2021452)
* Fri Oct 29 2021 Arjun Shankar <arjun@redhat.com> - 2.28-168 * Fri Oct 29 2021 Arjun Shankar <arjun@redhat.com> - 2.28-168
- Optimize memcmp, strcpy, and stpcpy for IBM POWER10 (#1983203) - Optimize memcmp, strcpy, and stpcpy for IBM POWER10 (#1983203)