diff options
| author | Izik Eidus <[email protected]> | 2009-09-23 21:47:16 +0300 |
|---|---|---|
| committer | Avi Kivity <[email protected]> | 2009-10-04 17:04:48 +0200 |
| commit | acb66dd051d0834c8b36d147ff83a8d39da0fe0b (patch) | |
| tree | 20c5fb817e34ddca6dd4ec20ce70613eba5b10d1 /drivers/misc/ibmasm/command.c | |
| parent | 6a54435560efdab1a08f429a954df4d6c740bddf (diff) | |
KVM: MMU: dont hold pagecount reference for mapped sptes pages
When using mmu notifiers, we are allowed to remove the page count
reference tooken by get_user_pages to a specific page that is mapped
inside the shadow page tables.
This is needed so we can balance the pagecount against mapcount
checking.
(Right now kvm increase the pagecount and does not increase the
mapcount when mapping page into shadow page table entry,
so when comparing pagecount against mapcount, you have no
reliable result.)
Signed-off-by: Izik Eidus <[email protected]>
Signed-off-by: Marcelo Tosatti <[email protected]>
Diffstat (limited to 'drivers/misc/ibmasm/command.c')
0 files changed, 0 insertions, 0 deletions