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authorYinghai Lu <yhlu.kernel@gmail.com>2008-07-12 14:31:28 -0700
committerIngo Molnar <mingo@elte.hu>2008-07-13 08:19:16 +0200
commit965194c15dc9e4f3bc44432b39c441c86af7f11d (patch)
tree0afa32ccb270ff2f506299744c184a4c9ab83c7a /arch/x86/pci
parent7ab073b6e0cde1544f4e79fadb75532528af7595 (diff)
downloadlinux-965194c15dc9e4f3bc44432b39c441c86af7f11d.tar.bz2
x86: max_low_pfn_mapped fix, #2
tighten the boundary checks around max_low_pfn_mapped - dont overmap nor undermap into holes. also print out tseg for AMD cpus, for diagnostic purposes. (this is an SMM area, and we split up any big mappings around that area) Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/pci')
-rw-r--r--arch/x86/pci/i386.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index 5281e343dd9f..2aafb67dc5f1 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -334,9 +334,9 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
flags = new_flags;
}
- if (((vma->vm_pgoff <= max_low_pfn_mapped) ||
+ if (((vma->vm_pgoff < max_low_pfn_mapped) ||
(vma->vm_pgoff >= (1UL<<(32 - PAGE_SHIFT)) &&
- vma->vm_pgoff <= max_pfn_mapped)) &&
+ vma->vm_pgoff < max_pfn_mapped)) &&
ioremap_change_attr((unsigned long)__va(addr), len, flags)) {
free_memtype(addr, addr + len);
return -EINVAL;