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Accepting request 1105262 from home:Andreas_Schwab:Factory

- Require that elf/check-localplt does not fail
- glibc-2.3.90-langpackdir.diff: add hidden alias for __strcpy_chk
- cache-amd-legacy.patch: x86: Fix for cache computation on AMD legacy
  cpus
- cache-intel-shared.patch: x86: Fix incorrect scope of setting
  `shared_per_thread` (BZ# 30745)

OBS-URL: https://build.opensuse.org/request/show/1105262
OBS-URL: https://build.opensuse.org/package/show/Base:System/glibc?expand=0&rev=659
This commit is contained in:
Andreas Schwab 2023-08-22 12:33:42 +00:00 committed by Git OBS Bridge
parent f252c599f1
commit 621320af4e
5 changed files with 369 additions and 0 deletions

286
cache-amd-legacy.patch Normal file
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@ -0,0 +1,286 @@
From ced101ed9d3b7cfd12d97ef24940cb00b8658c81 Mon Sep 17 00:00:00 2001
From: Sajan Karumanchi <sajan.karumanchi@amd.com>
Date: Tue, 1 Aug 2023 15:20:55 +0000
Subject: [PATCH] x86: Fix for cache computation on AMD legacy cpus.
Some legacy AMD CPUs and hypervisors have the _cpuid_ '0x8000_001D'
set to Zero, thus resulting in zeroed-out computed cache values.
This patch reintroduces the old way of cache computation as a
fail-safe option to handle these exceptions.
Fixed 'level4_cache_size' value through handle_amd().
Reviewed-by: Premachandra Mallappa <premachandra.mallappa@amd.com>
Tested-by: Florian Weimer <fweimer@redhat.com>
---
sysdeps/x86/dl-cacheinfo.h | 226 ++++++++++++++++++++++++++++++++-----
1 file changed, 199 insertions(+), 27 deletions(-)
diff --git a/sysdeps/x86/dl-cacheinfo.h b/sysdeps/x86/dl-cacheinfo.h
index cd4d0351ae..285773039f 100644
--- a/sysdeps/x86/dl-cacheinfo.h
+++ b/sysdeps/x86/dl-cacheinfo.h
@@ -315,40 +315,206 @@ handle_amd (int name)
{
unsigned int eax;
unsigned int ebx;
- unsigned int ecx;
+ unsigned int ecx = 0;
unsigned int edx;
- unsigned int count = 0x1;
+ unsigned int max_cpuid = 0;
+ unsigned int fn = 0;
/* No level 4 cache (yet). */
if (name > _SC_LEVEL3_CACHE_LINESIZE)
return 0;
- if (name >= _SC_LEVEL3_CACHE_SIZE)
- count = 0x3;
- else if (name >= _SC_LEVEL2_CACHE_SIZE)
- count = 0x2;
- else if (name >= _SC_LEVEL1_DCACHE_SIZE)
- count = 0x0;
+ __cpuid (0x80000000, max_cpuid, ebx, ecx, edx);
+
+ if (max_cpuid >= 0x8000001D)
+ /* Use __cpuid__ '0x8000_001D' to compute cache details. */
+ {
+ unsigned int count = 0x1;
+
+ if (name >= _SC_LEVEL3_CACHE_SIZE)
+ count = 0x3;
+ else if (name >= _SC_LEVEL2_CACHE_SIZE)
+ count = 0x2;
+ else if (name >= _SC_LEVEL1_DCACHE_SIZE)
+ count = 0x0;
+
+ __cpuid_count (0x8000001D, count, eax, ebx, ecx, edx);
+
+ if (ecx != 0)
+ {
+ switch (name)
+ {
+ case _SC_LEVEL1_ICACHE_ASSOC:
+ case _SC_LEVEL1_DCACHE_ASSOC:
+ case _SC_LEVEL2_CACHE_ASSOC:
+ case _SC_LEVEL3_CACHE_ASSOC:
+ return ((ebx >> 22) & 0x3ff) + 1;
+ case _SC_LEVEL1_ICACHE_LINESIZE:
+ case _SC_LEVEL1_DCACHE_LINESIZE:
+ case _SC_LEVEL2_CACHE_LINESIZE:
+ case _SC_LEVEL3_CACHE_LINESIZE:
+ return (ebx & 0xfff) + 1;
+ case _SC_LEVEL1_ICACHE_SIZE:
+ case _SC_LEVEL1_DCACHE_SIZE:
+ case _SC_LEVEL2_CACHE_SIZE:
+ case _SC_LEVEL3_CACHE_SIZE:
+ return (((ebx >> 22) & 0x3ff) + 1) * ((ebx & 0xfff) + 1) * (ecx + 1);
+ default:
+ __builtin_unreachable ();
+ }
+ return -1;
+ }
+ }
+
+ /* Legacy cache computation for CPUs prior to Bulldozer family.
+ This is also a fail-safe mechanism for some hypervisors that
+ accidentally configure __cpuid__ '0x8000_001D' to Zero. */
- __cpuid_count (0x8000001D, count, eax, ebx, ecx, edx);
+ fn = 0x80000005 + (name >= _SC_LEVEL2_CACHE_SIZE);
+
+ if (max_cpuid < fn)
+ return 0;
+
+ __cpuid (fn, eax, ebx, ecx, edx);
+
+ if (name < _SC_LEVEL1_DCACHE_SIZE)
+ {
+ name += _SC_LEVEL1_DCACHE_SIZE - _SC_LEVEL1_ICACHE_SIZE;
+ ecx = edx;
+ }
switch (name)
{
- case _SC_LEVEL1_ICACHE_ASSOC:
- case _SC_LEVEL1_DCACHE_ASSOC:
- case _SC_LEVEL2_CACHE_ASSOC:
+ case _SC_LEVEL1_DCACHE_SIZE:
+ return (ecx >> 14) & 0x3fc00;
+
+ case _SC_LEVEL1_DCACHE_ASSOC:
+ ecx >>= 16;
+ if ((ecx & 0xff) == 0xff)
+ {
+ /* Fully associative. */
+ return (ecx << 2) & 0x3fc00;
+ }
+ return ecx & 0xff;
+
+ case _SC_LEVEL1_DCACHE_LINESIZE:
+ return ecx & 0xff;
+
+ case _SC_LEVEL2_CACHE_SIZE:
+ return (ecx & 0xf000) == 0 ? 0 : (ecx >> 6) & 0x3fffc00;
+
+ case _SC_LEVEL2_CACHE_ASSOC:
+ switch ((ecx >> 12) & 0xf)
+ {
+ case 0:
+ case 1:
+ case 2:
+ case 4:
+ return (ecx >> 12) & 0xf;
+ case 6:
+ return 8;
+ case 8:
+ return 16;
+ case 10:
+ return 32;
+ case 11:
+ return 48;
+ case 12:
+ return 64;
+ case 13:
+ return 96;
+ case 14:
+ return 128;
+ case 15:
+ return ((ecx >> 6) & 0x3fffc00) / (ecx & 0xff);
+ default:
+ return 0;
+ }
+
+ case _SC_LEVEL2_CACHE_LINESIZE:
+ return (ecx & 0xf000) == 0 ? 0 : ecx & 0xff;
+
+ case _SC_LEVEL3_CACHE_SIZE:
+ {
+ long int total_l3_cache = 0, l3_cache_per_thread = 0;
+ unsigned int threads = 0;
+ const struct cpu_features *cpu_features;
+
+ if ((edx & 0xf000) == 0)
+ return 0;
+
+ total_l3_cache = (edx & 0x3ffc0000) << 1;
+ cpu_features = __get_cpu_features ();
+
+ /* Figure out the number of logical threads that share L3. */
+ if (max_cpuid >= 0x80000008)
+ {
+ /* Get width of APIC ID. */
+ __cpuid (0x80000008, eax, ebx, ecx, edx);
+ threads = (ecx & 0xff) + 1;
+ }
+
+ if (threads == 0)
+ {
+ /* If APIC ID width is not available, use logical
+ processor count. */
+ __cpuid (0x00000001, eax, ebx, ecx, edx);
+ if ((edx & (1 << 28)) != 0)
+ threads = (ebx >> 16) & 0xff;
+ }
+
+ /* Cap usage of highest cache level to the number of
+ supported threads. */
+ if (threads > 0)
+ l3_cache_per_thread = total_l3_cache/threads;
+
+ /* Get shared cache per ccx for Zen architectures. */
+ if (cpu_features->basic.family >= 0x17)
+ {
+ long int l3_cache_per_ccx = 0;
+ /* Get number of threads share the L3 cache in CCX. */
+ __cpuid_count (0x8000001D, 0x3, eax, ebx, ecx, edx);
+ unsigned int threads_per_ccx = ((eax >> 14) & 0xfff) + 1;
+ l3_cache_per_ccx = l3_cache_per_thread * threads_per_ccx;
+ return l3_cache_per_ccx;
+ }
+ else
+ {
+ return l3_cache_per_thread;
+ }
+ }
+
case _SC_LEVEL3_CACHE_ASSOC:
- return ecx ? ((ebx >> 22) & 0x3ff) + 1 : 0;
- case _SC_LEVEL1_ICACHE_LINESIZE:
- case _SC_LEVEL1_DCACHE_LINESIZE:
- case _SC_LEVEL2_CACHE_LINESIZE:
+ switch ((edx >> 12) & 0xf)
+ {
+ case 0:
+ case 1:
+ case 2:
+ case 4:
+ return (edx >> 12) & 0xf;
+ case 6:
+ return 8;
+ case 8:
+ return 16;
+ case 10:
+ return 32;
+ case 11:
+ return 48;
+ case 12:
+ return 64;
+ case 13:
+ return 96;
+ case 14:
+ return 128;
+ case 15:
+ return ((edx & 0x3ffc0000) << 1) / (edx & 0xff);
+ default:
+ return 0;
+ }
+
case _SC_LEVEL3_CACHE_LINESIZE:
- return ecx ? (ebx & 0xfff) + 1 : 0;
- case _SC_LEVEL1_ICACHE_SIZE:
- case _SC_LEVEL1_DCACHE_SIZE:
- case _SC_LEVEL2_CACHE_SIZE:
- case _SC_LEVEL3_CACHE_SIZE:
- return ecx ? (((ebx >> 22) & 0x3ff) + 1) * ((ebx & 0xfff) + 1) * (ecx + 1): 0;
+ return (edx & 0xf000) == 0 ? 0 : edx & 0xff;
+
default:
__builtin_unreachable ();
}
@@ -703,7 +869,6 @@ dl_init_cacheinfo (struct cpu_features *cpu_features)
data = handle_amd (_SC_LEVEL1_DCACHE_SIZE);
core = handle_amd (_SC_LEVEL2_CACHE_SIZE);
shared = handle_amd (_SC_LEVEL3_CACHE_SIZE);
- shared_per_thread = shared;
level1_icache_size = handle_amd (_SC_LEVEL1_ICACHE_SIZE);
level1_icache_linesize = handle_amd (_SC_LEVEL1_ICACHE_LINESIZE);
@@ -716,13 +881,20 @@ dl_init_cacheinfo (struct cpu_features *cpu_features)
level3_cache_size = shared;
level3_cache_assoc = handle_amd (_SC_LEVEL3_CACHE_ASSOC);
level3_cache_linesize = handle_amd (_SC_LEVEL3_CACHE_LINESIZE);
+ level4_cache_size = handle_amd (_SC_LEVEL4_CACHE_SIZE);
if (shared <= 0)
- /* No shared L3 cache. All we have is the L2 cache. */
- shared = core;
+ {
+ /* No shared L3 cache. All we have is the L2 cache. */
+ shared = core;
+ }
+ else if (cpu_features->basic.family < 0x17)
+ {
+ /* Account for exclusive L2 and L3 caches. */
+ shared += core;
+ }
- if (shared_per_thread <= 0)
- shared_per_thread = shared;
+ shared_per_thread = shared;
}
cpu_features->level1_icache_size = level1_icache_size;
--
2.41.0

45
cache-intel-shared.patch Normal file
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@ -0,0 +1,45 @@
From 5ea70cc02626d9b85f1570153873d8648a47bf95 Mon Sep 17 00:00:00 2001
From: Noah Goldstein <goldstein.w.n@gmail.com>
Date: Thu, 10 Aug 2023 19:28:24 -0500
Subject: [PATCH] x86: Fix incorrect scope of setting `shared_per_thread` [BZ#
30745]
The:
```
if (shared_per_thread > 0 && threads > 0)
shared_per_thread /= threads;
```
Code was accidentally moved to inside the else scope. This doesn't
match how it was previously (before af992e7abd).
This patch fixes that by putting the division after the `else` block.
(cherry picked from commit 084fb31bc2c5f95ae0b9e6df4d3cf0ff43471ede)
---
sysdeps/x86/dl-cacheinfo.h | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/sysdeps/x86/dl-cacheinfo.h b/sysdeps/x86/dl-cacheinfo.h
index 285773039f..5ddb35c9d9 100644
--- a/sysdeps/x86/dl-cacheinfo.h
+++ b/sysdeps/x86/dl-cacheinfo.h
@@ -770,11 +770,10 @@ get_common_cache_info (long int *shared_ptr, long int * shared_per_thread_ptr, u
level. */
threads = ((cpu_features->features[CPUID_INDEX_1].cpuid.ebx >> 16)
& 0xff);
-
- /* Get per-thread size of highest level cache. */
- if (shared_per_thread > 0 && threads > 0)
- shared_per_thread /= threads;
}
+ /* Get per-thread size of highest level cache. */
+ if (shared_per_thread > 0 && threads > 0)
+ shared_per_thread /= threads;
}
/* Account for non-inclusive L2 and L3 caches. */
--
2.41.0

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@ -1,3 +1,24 @@
Index: glibc-2.38/debug/strcpy_chk.c
===================================================================
--- glibc-2.38.orig/debug/strcpy_chk.c
+++ glibc-2.38/debug/strcpy_chk.c
@@ -31,3 +31,4 @@ __strcpy_chk (char *dest, const char *sr
return memcpy (dest, src, len + 1);
}
+libc_hidden_builtin_def (__strcpy_chk)
Index: glibc-2.38/include/string.h
===================================================================
--- glibc-2.38.orig/include/string.h
+++ glibc-2.38/include/string.h
@@ -213,6 +213,7 @@ libc_hidden_builtin_proto (__memcpy_chk)
libc_hidden_builtin_proto (__memmove_chk)
libc_hidden_builtin_proto (__mempcpy_chk)
libc_hidden_builtin_proto (__memset_chk)
+libc_hidden_builtin_proto (__strcpy_chk)
libc_hidden_builtin_proto (__stpcpy_chk)
#endif
Index: glibc-2.38/intl/loadmsgcat.c Index: glibc-2.38/intl/loadmsgcat.c
=================================================================== ===================================================================
--- glibc-2.38.orig/intl/loadmsgcat.c --- glibc-2.38.orig/intl/loadmsgcat.c

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@ -1,3 +1,13 @@
-------------------------------------------------------------------
Mon Aug 14 08:12:28 UTC 2023 - Andreas Schwab <schwab@suse.de>
- Require that elf/check-localplt does not fail
- glibc-2.3.90-langpackdir.diff: add hidden alias for __strcpy_chk
- cache-amd-legacy.patch: x86: Fix for cache computation on AMD legacy
cpus
- cache-intel-shared.patch: x86: Fix incorrect scope of setting
`shared_per_thread` (BZ# 30745)
------------------------------------------------------------------- -------------------------------------------------------------------
Wed Aug 2 10:50:32 UTC 2023 - Andreas Schwab <schwab@suse.de> Wed Aug 2 10:50:32 UTC 2023 - Andreas Schwab <schwab@suse.de>

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@ -291,6 +291,10 @@ Patch306: glibc-fix-double-loopback.diff
### ###
# PATCH-FIX-OPENSUSE iconv: restore verbosity with unrecognized encoding names (BZ #30694) # PATCH-FIX-OPENSUSE iconv: restore verbosity with unrecognized encoding names (BZ #30694)
Patch1000: iconv-error-verbosity.patch Patch1000: iconv-error-verbosity.patch
# PATCH-FIX-OPENSUSE x86: Fix for cache computation on AMD legacy cpus
Patch1001: cache-amd-legacy.patch
# PATCH-FIX-OPENSUSE x86: Fix incorrect scope of setting `shared_per_thread` (BZ# 30745)
Patch1002: cache-intel-shared.patch
### ###
# Patches awaiting upstream approval # Patches awaiting upstream approval
@ -515,6 +519,8 @@ library in a cross compilation setting.
%if %{without snapshot} %if %{without snapshot}
%patch1000 -p1 %patch1000 -p1
%patch1001 -p1
%patch1002 -p1
%endif %endif
%patch2000 -p1 %patch2000 -p1
@ -754,6 +760,7 @@ make %{?_smp_mflags} %{?make_output_sync} -C cc-base -k check || {
# Exceptions: # Exceptions:
# None! # None!
make %{?_smp_mflags} %{?make_output_sync} -C cc-base check-abi make %{?_smp_mflags} %{?make_output_sync} -C cc-base check-abi
make %{?_smp_mflags} %{?make_output_sync} -C cc-base test t=elf/check-localplt
%endif %endif
%define rtldlib %{_lib} %define rtldlib %{_lib}