Update config
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@ -18,3 +18,12 @@ actions:
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email: "eabdullin@almalinux.org"
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line:
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- "Overwrite target for x86_64_v2"
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- name: "Koichiro Iwao"
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email: "meta@almalinux.org"
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line:
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- "Apply patch from upstream BZ #32470"
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- add_files:
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- type: "patch"
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name: "glibc-upstream-2.39-bz-32470.patch"
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number: 1000
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36
files/glibc-upstream-2.39-bz-32470.patch
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36
files/glibc-upstream-2.39-bz-32470.patch
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@ -0,0 +1,36 @@
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From 2c8a7f14fac3628b6a06cc76cdfda54a7ac20386 Mon Sep 17 00:00:00 2001
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From: Florian Weimer <fweimer@redhat.com>
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Date: Tue, 17 Dec 2024 18:12:03 +0100
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Subject: [PATCH] x86: Avoid integer truncation with large cache sizes (bug
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32470)
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Some hypervisors report 1 TiB L3 cache size. This results
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in some variables incorrectly getting zeroed, causing crashes
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in memcpy/memmove because invariants are violated.
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(cherry picked from commit 61c3450db96dce96ad2b24b4f0b548e6a46d68e5)
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---
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sysdeps/x86/dl-cacheinfo.h | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/sysdeps/x86/dl-cacheinfo.h b/sysdeps/x86/dl-cacheinfo.h
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index 5a98f70364..1f68968a9a 100644
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--- a/sysdeps/x86/dl-cacheinfo.h
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+++ b/sysdeps/x86/dl-cacheinfo.h
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@@ -959,11 +959,11 @@ dl_init_cacheinfo (struct cpu_features *cpu_features)
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non_temporal_threshold = maximum_non_temporal_threshold;
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/* NB: The REP MOVSB threshold must be greater than VEC_SIZE * 8. */
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- unsigned int minimum_rep_movsb_threshold;
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+ unsigned long int minimum_rep_movsb_threshold;
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/* NB: The default REP MOVSB threshold is 4096 * (VEC_SIZE / 16) for
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VEC_SIZE == 64 or 32. For VEC_SIZE == 16, the default REP MOVSB
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threshold is 2048 * (VEC_SIZE / 16). */
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- unsigned int rep_movsb_threshold;
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+ unsigned long int rep_movsb_threshold;
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if (CPU_FEATURE_USABLE_P (cpu_features, AVX512F)
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&& !CPU_FEATURE_PREFERRED_P (cpu_features, Prefer_No_AVX512))
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{
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--
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2.46.2
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