[Bug libc/12587] sysconf(_SC_*CACHE) returns 0 for all caches on some CPUs.

[john.haxby at oracle dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12587

--- Comment #8 from John Haxby <john.haxby at oracle dot com> 2011-03-30 15:30:06 UTC ---
Any comments on the updated patch, Ulrich?   I've had it working on  a Xeon
5670:

# getconf -a | grep -i cache
LEVEL1_ICACHE_SIZE                 32768
LEVEL1_ICACHE_ASSOC                4
LEVEL1_ICACHE_LINESIZE             64
LEVEL1_DCACHE_SIZE                 32768
LEVEL1_DCACHE_ASSOC                8
LEVEL1_DCACHE_LINESIZE             64
LEVEL2_CACHE_SIZE                  262144
LEVEL2_CACHE_ASSOC                 8
LEVEL2_CACHE_LINESIZE              64
LEVEL3_CACHE_SIZE                  12582912
LEVEL3_CACHE_ASSOC                 16
LEVEL3_CACHE_LINESIZE              64
LEVEL4_CACHE_SIZE                  0
LEVEL4_CACHE_ASSOC                 0
LEVEL4_CACHE_LINESIZE              0

and I've also carefully tested the cpuid4 vs cpuid2 thing on a variety of
machines (including checking that the cpuid2 code still works).

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