mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
ecbbadbf10
1. Divide architecture features into the usable features and the preferred
features. The usable features are for correctness and can be exported in
a stable ABI. The preferred features are for performance and only for
glibc internal use.
2. Change struct cpu_features to
struct cpu_features
{
struct cpu_features_basic basic;
unsigned int *usable_p;
struct cpuid_registers cpuid[COMMON_CPUID_INDEX_MAX];
unsigned int usable[USABLE_FEATURE_INDEX_MAX];
unsigned int preferred[PREFERRED_FEATURE_INDEX_MAX];
...
};
and initialize usable_p to pointer to the usable arary so that
struct cpu_features
{
struct cpu_features_basic basic;
unsigned int *usable_p;
struct cpuid_registers cpuid[COMMON_CPUID_INDEX_MAX];
};
can be exported via a stable ABI. The cpuid and usable arrays can be
expanded with backward binary compatibility for both .o and .so files.
3. Add COMMON_CPUID_INDEX_7_ECX_1 for AVX512_BF16.
4. Detect ENQCMD, PKS, AVX512_VP2INTERSECT, MD_CLEAR, SERIALIZE, HYBRID,
TSXLDTRK, L1D_FLUSH, CORE_CAPABILITIES and AVX512_BF16.
5. Rename CAPABILITIES to ARCH_CAPABILITIES.
6. Check if AVX512_VP2INTERSECT, AVX512_BF16 and PKU are usable.
7. Update CPU feature detection test.
|
||
|---|---|---|
| .. | ||
| bits | ||
| fpu | ||
| nptl | ||
| __longjmp_cancel.S | ||
| atomic-machine.h | ||
| cacheinfo.c | ||
| cet-control.h | ||
| check-cet.awk | ||
| configure | ||
| configure.ac | ||
| cpu-features-offsets.sym | ||
| cpu-features.c | ||
| cpu-features.h | ||
| cpu-tunables.c | ||
| dl-cet.c | ||
| dl-get-cpu-features.c | ||
| dl-hwcap.h | ||
| dl-lookupcfg.h | ||
| dl-procinfo.c | ||
| dl-procinfo.h | ||
| dl-procruntime.c | ||
| dl-prop.h | ||
| dl-tunables.list | ||
| elf-initfini.h | ||
| elide.h | ||
| float128-abi.h | ||
| fpu_control.h | ||
| hp-timing.h | ||
| init-arch.h | ||
| jmp_buf-ssp.sym | ||
| ldsodefs.h | ||
| libc-start.c | ||
| libc-start.h | ||
| link_map.h | ||
| linkmap.h | ||
| longjmp.c | ||
| Makeconfig | ||
| Makefile | ||
| string_private.h | ||
| sysdep.h | ||
| tininess.h | ||
| tst-cet-legacy-1.c | ||
| tst-cet-legacy-1a.c | ||
| tst-cet-legacy-2.c | ||
| tst-cet-legacy-2a.c | ||
| tst-cet-legacy-3.c | ||
| tst-cet-legacy-4.c | ||
| tst-cet-legacy-4a.c | ||
| tst-cet-legacy-4b.c | ||
| tst-cet-legacy-4c.c | ||
| tst-cet-legacy-5.c | ||
| tst-cet-legacy-5a.c | ||
| tst-cet-legacy-5b.c | ||
| tst-cet-legacy-6.c | ||
| tst-cet-legacy-6a.c | ||
| tst-cet-legacy-6b.c | ||
| tst-cet-legacy-7.c | ||
| tst-cet-legacy-8.c | ||
| tst-cet-legacy-mod-1.c | ||
| tst-cet-legacy-mod-2.c | ||
| tst-cet-legacy-mod-4.c | ||
| tst-cet-legacy-mod-5.c | ||
| tst-cet-legacy-mod-5a.c | ||
| tst-cet-legacy-mod-5b.c | ||
| tst-cet-legacy-mod-5c.c | ||
| tst-cet-legacy-mod-6.c | ||
| tst-cet-legacy-mod-6a.c | ||
| tst-cet-legacy-mod-6b.c | ||
| tst-cet-legacy-mod-6c.c | ||
| tst-cet-legacy-mod-6d.c | ||
| tst-get-cpu-features-static.c | ||
| tst-get-cpu-features.c | ||
| Versions | ||