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* sysdeps/x86_64/cacheinfo.c (handle_amd): Fix computation of

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associativity for fully-associative caches.
This commit is contained in:
Ulrich Drepper 2007-08-25 17:24:23 +00:00
parent 80e7d6a6d3
commit 76fca9f14a
2 changed files with 9 additions and 8 deletions
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3
ChangeLog
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@ -1,5 +1,8 @@
2007-08-25 Ulrich Drepper <drepper@redhat.com>
* sysdeps/x86_64/cacheinfo.c (handle_amd): Fix computation of
associativity for fully-associative caches.
* sysdeps/x86_64/cacheinfo.c (handle_amd): Handle L3 cache
requests. Fill on more associativity values for L2.
Patch mostly by Evandro Menezes.

14
sysdeps/x86_64/cacheinfo.c
View File

@ -296,14 +296,13 @@ handle_amd (int name)
return (ecx & 0xf000) == 0 ? 0 : (ecx >> 6) & 0x3fffc00;
case _SC_LEVEL2_CACHE_ASSOC:
ecx >>= 12;
switch (ecx & 0xf)
switch ((ecx >> 12) & 0xf)
{
case 0:
case 1:
case 2:
case 4:
return ecx & 0xf;
return (ecx >> 12) & 0xf;
case 6:
return 8;
case 8:
@ -319,7 +318,7 @@ handle_amd (int name)
case 14:
return 128;
case 15:
return (ecx << 6) & 0x3fffc00;
return ((ecx >> 6) & 0x3fffc00) / (ecx & 0xff);
default:
return 0;
}
@ -332,14 +331,13 @@ handle_amd (int name)
return (edx & 0xf000) == 0 ? 0 : (edx & 0x3ffc0000) << 1;
case _SC_LEVEL3_CACHE_ASSOC:
edx >>= 12;
switch (edx & 0xf)
switch ((edx >> 12) & 0xf)
{
case 0:
case 1:
case 2:
case 4:
return edx & 0xf;
return (edx >> 12) & 0xf;
case 6:
return 8;
case 8:
@ -355,7 +353,7 @@ handle_amd (int name)
case 14:
return 128;
case 15:
return (edx & 0x3ffc0) << 13;
return ((edx & 0x3ffc0000) << 1) / (edx & 0xff);
default:
return 0;
}