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author | Zachary Amsden <zach@vmware.com> | 2007-05-06 14:49:20 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-07 12:12:52 -0700 |
commit | 0013572b2ae535bfd6314f22d9aef53725ea00d8 (patch) | |
tree | 0c405dfe8a106099696ed9955b4405e6d7caed70 /fs/proc | |
parent | 10a8d6ae4b3182d6588a5809a8366343bc295c20 (diff) | |
download | op-kernel-dev-0013572b2ae535bfd6314f22d9aef53725ea00d8.zip op-kernel-dev-0013572b2ae535bfd6314f22d9aef53725ea00d8.tar.gz |
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 <zach@vmware.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc')
0 files changed, 0 insertions, 0 deletions