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x86: PAT Update validate_pat_support for intel CPUs
authorvenkatesh.pallipadi@intel.com <venkatesh.pallipadi@intel.com>
Wed, 20 Aug 2008 23:45:53 +0000 (16:45 -0700)
committerIngo Molnar <mingo@elte.hu>
Thu, 21 Aug 2008 11:27:34 +0000 (13:27 +0200)
commit0a0469434b79e0c9ca957ae30f2a3dcad6919bc6
treee2d657ff43c768d3b9f47642fa522cba1c3ffcd8tree | snapshot
parentbfc8eee8062bac01f89476222214e4f2a61de91fcommit | diff
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>
arch/x86/kernel/cpu/addon_cpuid_features.c diff | blob | history
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