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i386: use pte_update_defer in ptep_test_and_clear_{dirty,young}
If you actually clear the bit, you need to: + pte_update_defer(vma->vm_mm, addr, ptep); The reason is, when updating PTEs, the hypervisor must be notified. Using atomic operations to do this is fine for all hypervisors I am aware of. However, for hypervisors which shadow page tables, if these PTE modifications are not trapped, you need a post-modification call to fulfill the update of the shadow page table. Acked-by: Zachary Amsden <[email protected]> Cc: Hugh Dickins <[email protected]> Signed-off-by: David Rientjes <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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Zachary Amsden
authored and
Linus Torvalds
committed
May 7, 2007
1 parent
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