revert: "x86: ioremap(), extend check to all RAM pages"
Vegard Nossum reported a large (150 seconds) boot delay during bootup,
and bisected it to "x86: ioremap(), extend check to all RAM pages"
(commit bdd3cee2e4b). Revert this commit for now.
Bisected-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 804de18..0be9f9c 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -148,8 +148,8 @@
/*
* Don't allow anybody to remap normal RAM that we're using..
*/
- for (pfn = phys_addr >> PAGE_SHIFT;
- (pfn << PAGE_SHIFT) < last_addr; pfn++) {
+ for (pfn = phys_addr >> PAGE_SHIFT; pfn < max_pfn_mapped &&
+ (pfn << PAGE_SHIFT) < last_addr; pfn++) {
int is_ram = page_is_ram(pfn);