The patch titled
x86: fix wrong page aligned size calculation in ioremapping code
has been added to the -mm tree. Its filename is
x86-fix-wrong-page-aligned-size-calculation-in-ioremapping-code.patch
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------------------------------------------------------
Subject: x86: fix wrong page aligned size calculation in ioremapping code
From: Florian Zumbiehl <florz@xxxxxxxx>
x86 early_iounmap(): fix off-by-one error in page alignment of allocation
size for sizes where size%PAGE_SIZE==1.
Signed-off-by: Florian Zumbiehl <florz@xxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/mm/ioremap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN arch/x86/mm/ioremap.c~x86-fix-wrong-page-aligned-size-calculation-in-ioremapping-code arch/x86/mm/ioremap.c
--- a/arch/x86/mm/ioremap.c~x86-fix-wrong-page-aligned-size-calculation-in-ioremapping-code
+++ a/arch/x86/mm/ioremap.c
@@ -613,7 +613,7 @@ void __init early_iounmap(void __iomem *
return;
}
offset = virt_addr & ~PAGE_MASK;
- nrpages = PAGE_ALIGN(offset + size - 1) >> PAGE_SHIFT;
+ nrpages = PAGE_ALIGN(offset + size) >> PAGE_SHIFT;
idx = FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*slot;
while (nrpages > 0) {
_
Patches currently in -mm which might be from florz@xxxxxxxx are
x86-fix-wrong-page-aligned-size-calculation-in-ioremapping-code.patch
wrong-page-aligned-size-calculation-in-ioremapping-code.patch
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