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a546baa9cd
The meaning of the 25-14 bits in EAX returned from cpuid with EAX = 4 has been changed from "the maximum number of threads sharing the cache" to "the maximum number of addressable IDs for logical processors sharing the cache" if cpuid takes EAX = 11. We need to use results from both EAX = 4 and EAX = 11 to get the number of threads sharing the cache. The 25-14 bits in EAX on Core i7 is 15 although the number of logical processors is 8. Here is a white paper on this: http://software.intel.com/en-us/articles/intel-64-architecture-processor-topology-enumeration/ This patch correctly counts number of logical processors on Intel CPUs with EAX = 11 support on cpuid. Tested on Dinnington, Core i7 and Nehalem EX/EP. It also fixed Pentium Ds workaround since EBX may not have the right value returned from cpuid with EAX = 1. |
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| .. | ||
| bits | ||
| elf | ||
| fpu | ||
| multiarch | ||
| ____longjmp_chk.S | ||
| __longjmp.S | ||
| _mcount.S | ||
| abort-instr.h | ||
| add_n.S | ||
| addmul_1.S | ||
| backtrace.c | ||
| bp-asm.h | ||
| bsd-_setjmp.S | ||
| bsd-setjmp.S | ||
| bzero.S | ||
| cacheinfo.c | ||
| configure | ||
| dl-irel.h | ||
| dl-lookupcfg.h | ||
| dl-machine.h | ||
| dl-runtime.c | ||
| dl-tls.h | ||
| dl-tlsdesc.h | ||
| dl-tlsdesc.S | ||
| dl-trampoline.S | ||
| ffs.c | ||
| ffsll.c | ||
| fpu_control.h | ||
| hp-timing.c | ||
| hp-timing.h | ||
| htonl.S | ||
| Implies | ||
| jmpbuf-offsets.h | ||
| jmpbuf-unwind.h | ||
| ldbl2mpn.c | ||
| link-defines.sym | ||
| lshift.S | ||
| machine-gmon.h | ||
| Makefile | ||
| memchr.S | ||
| memcmp.S | ||
| memcpy_chk.S | ||
| memcpy.S | ||
| mempcpy_chk.S | ||
| mempcpy.S | ||
| memset_chk.S | ||
| memset.S | ||
| memusage.h | ||
| mp_clz_tab.c | ||
| mul_1.S | ||
| rawmemchr.S | ||
| rshift.S | ||
| rtld-memcmp.c | ||
| rtld-memset.c | ||
| rtld-strchr.S | ||
| rtld-strlen.S | ||
| sched_cpucount.c | ||
| setjmp.S | ||
| stackinfo.h | ||
| stpcpy_chk.S | ||
| stpcpy.S | ||
| strcat.S | ||
| strchr.S | ||
| strchrnul.S | ||
| strcmp.S | ||
| strcpy_chk.S | ||
| strcpy.S | ||
| strcspn.S | ||
| strlen.S | ||
| strncmp.S | ||
| strpbrk.S | ||
| strrchr.S | ||
| strspn.S | ||
| strtok_r.S | ||
| strtok.S | ||
| sub_n.S | ||
| submul_1.S | ||
| sysdep.h | ||
| tlsdesc.c | ||
| tlsdesc.sym | ||
| tst-stack-align.h | ||
| tst-xmmymm.sh | ||
| Versions | ||