x86: track memtype for RAM in page struct
authorSuresh Siddha <suresh.b.siddha@intel.com>
Wed, 24 Sep 2008 15:53:33 +0000 (08:53 -0700)
committerIngo Molnar <mingo@elte.hu>
Fri, 10 Oct 2008 17:29:18 +0000 (19:29 +0200)
commit9542ada803198e6eba29d3289abb39ea82047b92
tree3a99406988d1e8643b91840614cfd3340408a42f
parentad5ca55f6bdb47c957b681c7358bb3719ba4ee82
x86: track memtype for RAM in page struct

Track the memtype for RAM pages in page struct instead of using the
memtype list. This avoids the explosion in the number of entries in
memtype list (of the order of 20,000 with AGP) and makes the PAT
tracking simpler.

We are using PG_arch_1 bit in page->flags.

We still use the memtype list for non RAM pages.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/mm/ioremap.c
arch/x86/mm/pat.c
include/asm-x86/cacheflush.h
include/asm-x86/page.h