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Diffstat (limited to 'arch/x86/mm/pageattr.c')
-rw-r--r--arch/x86/mm/pageattr.c39
1 files changed, 27 insertions, 12 deletions
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 1b734d7a8966..7e600c1962db 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -591,9 +591,12 @@ static int __change_page_attr(struct cpa_data *cpa, int primary)
unsigned int level;
pte_t *kpte, old_pte;
- if (cpa->flags & CPA_PAGES_ARRAY)
- address = (unsigned long)page_address(cpa->pages[cpa->curpage]);
- else if (cpa->flags & CPA_ARRAY)
+ if (cpa->flags & CPA_PAGES_ARRAY) {
+ struct page *page = cpa->pages[cpa->curpage];
+ if (unlikely(PageHighMem(page)))
+ return 0;
+ address = (unsigned long)page_address(page);
+ } else if (cpa->flags & CPA_ARRAY)
address = cpa->vaddr[cpa->curpage];
else
address = *cpa->vaddr;
@@ -697,9 +700,12 @@ static int cpa_process_alias(struct cpa_data *cpa)
* No need to redo, when the primary call touched the direct
* mapping already:
*/
- if (cpa->flags & CPA_PAGES_ARRAY)
- vaddr = (unsigned long)page_address(cpa->pages[cpa->curpage]);
- else if (cpa->flags & CPA_ARRAY)
+ if (cpa->flags & CPA_PAGES_ARRAY) {
+ struct page *page = cpa->pages[cpa->curpage];
+ if (unlikely(PageHighMem(page)))
+ return 0;
+ vaddr = (unsigned long)page_address(page);
+ } else if (cpa->flags & CPA_ARRAY)
vaddr = cpa->vaddr[cpa->curpage];
else
vaddr = *cpa->vaddr;
@@ -997,12 +1003,15 @@ EXPORT_SYMBOL(set_memory_array_uc);
int _set_memory_wc(unsigned long addr, int numpages)
{
int ret;
+ unsigned long addr_copy = addr;
+
ret = change_page_attr_set(&addr, numpages,
__pgprot(_PAGE_CACHE_UC_MINUS), 0);
-
if (!ret) {
- ret = change_page_attr_set(&addr, numpages,
- __pgprot(_PAGE_CACHE_WC), 0);
+ ret = change_page_attr_set_clr(&addr_copy, numpages,
+ __pgprot(_PAGE_CACHE_WC),
+ __pgprot(_PAGE_CACHE_MASK),
+ 0, 0, NULL);
}
return ret;
}
@@ -1119,7 +1128,9 @@ int set_pages_array_uc(struct page **pages, int addrinarray)
int free_idx;
for (i = 0; i < addrinarray; i++) {
- start = (unsigned long)page_address(pages[i]);
+ if (PageHighMem(pages[i]))
+ continue;
+ start = page_to_pfn(pages[i]) << PAGE_SHIFT;
end = start + PAGE_SIZE;
if (reserve_memtype(start, end, _PAGE_CACHE_UC_MINUS, NULL))
goto err_out;
@@ -1132,7 +1143,9 @@ int set_pages_array_uc(struct page **pages, int addrinarray)
err_out:
free_idx = i;
for (i = 0; i < free_idx; i++) {
- start = (unsigned long)page_address(pages[i]);
+ if (PageHighMem(pages[i]))
+ continue;
+ start = page_to_pfn(pages[i]) << PAGE_SHIFT;
end = start + PAGE_SIZE;
free_memtype(start, end);
}
@@ -1161,7 +1174,9 @@ int set_pages_array_wb(struct page **pages, int addrinarray)
return retval;
for (i = 0; i < addrinarray; i++) {
- start = (unsigned long)page_address(pages[i]);
+ if (PageHighMem(pages[i]))
+ continue;
+ start = page_to_pfn(pages[i]) << PAGE_SHIFT;
end = start + PAGE_SIZE;
free_memtype(start, end);
}