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Commit ba748d22 authored by Ingo Molnar's avatar Ingo Molnar
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x86: warn about RAM pages in ioremap() 

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 320a6b2e
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Showing with 4 additions and 2 deletions
arch/x86/mm/ioremap.c
View file @ ba748d22
...@@ -149,9 +149,11 @@ static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size, ...@@ -149,9 +149,11 @@ static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size,
for (pfn = phys_addr >> PAGE_SHIFT; for (pfn = phys_addr >> PAGE_SHIFT;
(pfn << PAGE_SHIFT) < last_addr; pfn++) { (pfn << PAGE_SHIFT) < last_addr; pfn++) {
if (page_is_ram(pfn) && pfn_valid(pfn) && int is_ram = page_is_ram(pfn);
!PageReserved(pfn_to_page(pfn)))
if (is_ram && pfn_valid(pfn) && !PageReserved(pfn_to_page(pfn)))
return NULL; return NULL;
WARN_ON_ONCE(is_ram);
} }
switch (mode) { switch (mode) {
......
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