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authorvenkatesh.pallipadi@intel.com <venkatesh.pallipadi@intel.com>2008-03-18 17:00:14 -0700
committerIngo Molnar <mingo@elte.hu>2008-04-17 17:41:19 +0200
commit2e5d9c857d4e6c9e7b7d8c8c86a68a7842d213d6 (patch)
tree6c90c0f9f38ff85e2f42ddc0f4ef0291cdd47d38 /arch/x86/mm/Makefile
parentd27554d874c7eeb14c8bfecdc39c3a8618cd8d32 (diff)
x86: PAT infrastructure patch
Sets up pat_init() infrastructure. PAT MSR has following setting. PAT |PCD ||PWT ||| 000 WB _PAGE_CACHE_WB 001 WC _PAGE_CACHE_WC 010 UC- _PAGE_CACHE_UC_MINUS 011 UC _PAGE_CACHE_UC We are effectively changing WT from boot time setting to WC. UC_MINUS is used to provide backward compatibility to existing /dev/mem users(X). reserve_memtype and free_memtype are new interfaces for maintaining alias-free mapping. It is currently implemented in a simple way with a linked list and not optimized. reserve and free tracks the effective memory type, as a result of PAT and MTRR setting rather than what is actually requested in PAT. pat_init piggy backs on mtrr_init as the rules for setting both pat and mtrr are same. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/Makefile')
-rw-r--r--arch/x86/mm/Makefile3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile
index 9ab9889863f..20941d2954e 100644
--- a/arch/x86/mm/Makefile
+++ b/arch/x86/mm/Makefile
@@ -1,4 +1,5 @@
-obj-y := init_$(BITS).o fault.o ioremap.o extable.o pageattr.o mmap.o
+obj-y := init_$(BITS).o fault.o ioremap.o extable.o pageattr.o mmap.o \
+ pat.o
obj-$(CONFIG_X86_32) += pgtable_32.o