x86, CPA: Add a flag parameter to cpa set_clr()
Change change_page_attr_set_clr() array parameter to a flag. This helps
following patches which adds an interface to change attr to uc/wb over a
set of pages referred by struct page.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: arjan@infradead.org
Cc: eric@anholt.net
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: airlied@redhat.com
LKML-Reference: <20090319215358.611346000@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 1280565..69009af 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -787,7 +787,7 @@
static int change_page_attr_set_clr(unsigned long *addr, int numpages,
pgprot_t mask_set, pgprot_t mask_clr,
- int force_split, int array)
+ int force_split, int in_flag)
{
struct cpa_data cpa;
int ret, cache, checkalias;
@@ -802,7 +802,7 @@
return 0;
/* Ensure we are PAGE_SIZE aligned */
- if (!array) {
+ if (!(in_flag & CPA_ARRAY)) {
if (*addr & ~PAGE_MASK) {
*addr &= PAGE_MASK;
/*
@@ -840,7 +840,7 @@
cpa.curpage = 0;
cpa.force_split = force_split;
- if (array)
+ if (in_flag & CPA_ARRAY)
cpa.flags |= CPA_ARRAY;
/* No alias checking for _NX bit modifications */
@@ -889,14 +889,14 @@
pgprot_t mask, int array)
{
return change_page_attr_set_clr(addr, numpages, mask, __pgprot(0), 0,
- array);
+ (array ? CPA_ARRAY : 0));
}
static inline int change_page_attr_clear(unsigned long *addr, int numpages,
pgprot_t mask, int array)
{
return change_page_attr_set_clr(addr, numpages, __pgprot(0), mask, 0,
- array);
+ (array ? CPA_ARRAY : 0));
}
int _set_memory_uc(unsigned long addr, int numpages)