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| author | Joerg Roedel <joerg.roedel@amd.com> | 2009-06-09 10:50:57 +0200 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-06-09 10:50:57 +0200 |
| commit | d2dd01de9924ae24afeba5aa5bc2e08287701df6 (patch) | |
| tree | 3021bf496579a48984666355b59df5e44b42dd32 /arch/x86/mm/hugetlbpage.c | |
| parent | 367d04c4ec02dad34d80452e32e3370db7fb6fee (diff) | |
| parent | 62a6f465f6572e1f28765c583c12753bb3e23715 (diff) | |
Merge commit 'tip/core/iommu' into amd-iommu/fixes
Diffstat (limited to 'arch/x86/mm/hugetlbpage.c')
| -rw-r--r-- | arch/x86/mm/hugetlbpage.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c index 8f307d914c2e..f46c340727b8 100644 --- a/arch/x86/mm/hugetlbpage.c +++ b/arch/x86/mm/hugetlbpage.c @@ -26,12 +26,16 @@ static unsigned long page_table_shareable(struct vm_area_struct *svma, unsigned long sbase = saddr & PUD_MASK; unsigned long s_end = sbase + PUD_SIZE; + /* Allow segments to share if only one is marked locked */ + unsigned long vm_flags = vma->vm_flags & ~VM_LOCKED; + unsigned long svm_flags = svma->vm_flags & ~VM_LOCKED; + /* * match the virtual addresses, permission and the alignment of the * page table page. */ if (pmd_index(addr) != pmd_index(saddr) || - vma->vm_flags != svma->vm_flags || + vm_flags != svm_flags || sbase < svma->vm_start || svma->vm_end < s_end) return 0; |