commit b310f381d220b2c6e3fab16e8c6e4ca13eea75b2
author venkatesh.pallipadi@intel.com <venkatesh.pallipadi@intel.com> Tue Mar 18 17:00:24 2008 -0700
committer Ingo Molnar <mingo@elte.hu> Thu Apr 17 17:41:20 2008 +0200
tree dd25df964cd1280ee4f908002726b5ab921da807
parent ef354af4629e5cc76a3f64fc46d452f2b56d5a59

x86: PAT add ioremap_wc() interface

Introduce ioremap_wc for wc remap.

(generic wrapper is in a later patch)

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>

include/asm-x86/pgtable.h

diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h
index ca6deb3..e814cfe 100644
--- a/include/asm-x86/pgtable.h
+++ b/include/asm-x86/pgtable.h
@@ -90,6 +90,7 @@
 #define __PAGE_KERNEL_RO		(__PAGE_KERNEL & ~_PAGE_RW)
 #define __PAGE_KERNEL_RX		(__PAGE_KERNEL_EXEC & ~_PAGE_RW)
 #define __PAGE_KERNEL_EXEC_NOCACHE	(__PAGE_KERNEL_EXEC | _PAGE_PCD | _PAGE_PWT)
+#define __PAGE_KERNEL_WC		(__PAGE_KERNEL | _PAGE_CACHE_WC)
 #define __PAGE_KERNEL_NOCACHE		(__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT)
 #define __PAGE_KERNEL_UC_MINUS		(__PAGE_KERNEL | _PAGE_PCD)
 #define __PAGE_KERNEL_VSYSCALL		(__PAGE_KERNEL_RX | _PAGE_USER)
@@ -107,6 +108,7 @@
 #define PAGE_KERNEL_RO			MAKE_GLOBAL(__PAGE_KERNEL_RO)
 #define PAGE_KERNEL_EXEC		MAKE_GLOBAL(__PAGE_KERNEL_EXEC)
 #define PAGE_KERNEL_RX			MAKE_GLOBAL(__PAGE_KERNEL_RX)
+#define PAGE_KERNEL_WC			MAKE_GLOBAL(__PAGE_KERNEL_WC)
 #define PAGE_KERNEL_NOCACHE		MAKE_GLOBAL(__PAGE_KERNEL_NOCACHE)
 #define PAGE_KERNEL_UC_MINUS		MAKE_GLOBAL(__PAGE_KERNEL_UC_MINUS)
 #define PAGE_KERNEL_EXEC_NOCACHE	MAKE_GLOBAL(__PAGE_KERNEL_EXEC_NOCACHE)