| commit | 8323444b5dba3fe55e56a95d20d8f55c1d6745af | |
| author | venkatesh.pallipadi@intel.com <venkatesh.pallipadi@intel.com> | |
| Wed, 20 Aug 2008 23:45:53 +0000 (20 16:45 -0700) | ||
| committer | Ingo Molnar <mingo@elte.hu> | |
| Thu, 21 Aug 2008 11:27:34 +0000 (21 13:27 +0200) | ||
| tree | e2d657ff43c768d3b9f47642fa522cba1c3ffcd8 | treesnapshot (tar.gz zip) |
| parent | 28df82ebab79c6a2b4295dd94fd8de88196a49df | commitdiff |
x86: PAT Update validate_pat_support for intel CPUs
Pentium III and Core Solo/Duo CPUs have an erratum
" Page with PAT set to WC while associated MTRR is UC may consolidate to UC "
which can result in WC setting in PAT to be ineffective. We will disable
PAT on such CPUs, so that we can continue to use MTRR WC setting.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Pentium III and Core Solo/Duo CPUs have an erratum
" Page with PAT set to WC while associated MTRR is UC may consolidate to UC "
which can result in WC setting in PAT to be ineffective. We will disable
PAT on such CPUs, so that we can continue to use MTRR WC setting.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| arch/x86/kernel/cpu/addon_cpuid_features.c | diffblobblamehistory |