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-rw-r--r--arch/x86/mm/ioremap.c4
-rw-r--r--arch/x86/mm/pageattr.c21
-rw-r--r--include/asm-x86/cacheflush.h2
3 files changed, 23 insertions, 4 deletions
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 20c01f2b2e11..0cdb7f11ce49 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -95,10 +95,10 @@ int ioremap_change_attr(unsigned long vaddr, unsigned long size,
95 switch (prot_val) { 95 switch (prot_val) {
96 case _PAGE_CACHE_UC: 96 case _PAGE_CACHE_UC:
97 default: 97 default:
98 err = set_memory_uc(vaddr, nrpages); 98 err = _set_memory_uc(vaddr, nrpages);
99 break; 99 break;
100 case _PAGE_CACHE_WB: 100 case _PAGE_CACHE_WB:
101 err = set_memory_wb(vaddr, nrpages); 101 err = _set_memory_wb(vaddr, nrpages);
102 break; 102 break;
103 } 103 }
104 104
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index f7d5ca170c22..938df5e8402b 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -19,6 +19,7 @@
19#include <asm/uaccess.h> 19#include <asm/uaccess.h>
20#include <asm/pgalloc.h> 20#include <asm/pgalloc.h>
21#include <asm/proto.h> 21#include <asm/proto.h>
22#include <asm/pat.h>
22 23
23/* 24/*
24 * The current flushing context - we pass it instead of 5 arguments: 25 * The current flushing context - we pass it instead of 5 arguments:
@@ -770,18 +771,34 @@ static inline int change_page_attr_clear(unsigned long addr, int numpages,
770 return change_page_attr_set_clr(addr, numpages, __pgprot(0), mask); 771 return change_page_attr_set_clr(addr, numpages, __pgprot(0), mask);
771} 772}
772 773
773int set_memory_uc(unsigned long addr, int numpages) 774int _set_memory_uc(unsigned long addr, int numpages)
774{ 775{
775 return change_page_attr_set(addr, numpages, 776 return change_page_attr_set(addr, numpages,
776 __pgprot(_PAGE_CACHE_UC)); 777 __pgprot(_PAGE_CACHE_UC));
777} 778}
779
780int set_memory_uc(unsigned long addr, int numpages)
781{
782 if (reserve_memtype(addr, addr + numpages * PAGE_SIZE,
783 _PAGE_CACHE_UC, NULL))
784 return -EINVAL;
785
786 return _set_memory_uc(addr, numpages);
787}
778EXPORT_SYMBOL(set_memory_uc); 788EXPORT_SYMBOL(set_memory_uc);
779 789
780int set_memory_wb(unsigned long addr, int numpages) 790int _set_memory_wb(unsigned long addr, int numpages)
781{ 791{
782 return change_page_attr_clear(addr, numpages, 792 return change_page_attr_clear(addr, numpages,
783 __pgprot(_PAGE_CACHE_MASK)); 793 __pgprot(_PAGE_CACHE_MASK));
784} 794}
795
796int set_memory_wb(unsigned long addr, int numpages)
797{
798 free_memtype(addr, addr + numpages * PAGE_SIZE);
799
800 return _set_memory_wb(addr, numpages);
801}
785EXPORT_SYMBOL(set_memory_wb); 802EXPORT_SYMBOL(set_memory_wb);
786 803
787int set_memory_x(unsigned long addr, int numpages) 804int set_memory_x(unsigned long addr, int numpages)
diff --git a/include/asm-x86/cacheflush.h b/include/asm-x86/cacheflush.h
index 5396c212d8c0..5676fba10a09 100644
--- a/include/asm-x86/cacheflush.h
+++ b/include/asm-x86/cacheflush.h
@@ -34,6 +34,8 @@ int set_pages_nx(struct page *page, int numpages);
34int set_pages_ro(struct page *page, int numpages); 34int set_pages_ro(struct page *page, int numpages);
35int set_pages_rw(struct page *page, int numpages); 35int set_pages_rw(struct page *page, int numpages);
36 36
37int _set_memory_uc(unsigned long addr, int numpages);
38int _set_memory_wb(unsigned long addr, int numpages);
37int set_memory_uc(unsigned long addr, int numpages); 39int set_memory_uc(unsigned long addr, int numpages);
38int set_memory_wb(unsigned long addr, int numpages); 40int set_memory_wb(unsigned long addr, int numpages);
39int set_memory_x(unsigned long addr, int numpages); 41int set_memory_x(unsigned long addr, int numpages);