| commit | 9647c14c98687d0abf5197e74b9d1448ab6ebb95 | |
| author | Izik Eidus <izike@qumranet.com> | |
| Tue, 16 Oct 2007 12:43:46 +0000 (16 14:43 +0200) | ||
| committer | Avi Kivity <avi@qumranet.com> | |
| Wed, 30 Jan 2008 15:52:54 +0000 (30 17:52 +0200) | ||
| tree | 6bd61ace880d9428c38ebe45858793d689ca4f4b | treesnapshot (tar.gz zip) |
| parent | 98348e9507ace5fda95432ff8ca23f13e7f66176 | commitdiff |
KVM: MMU: Keep a reverse mapping of non-writable translations
The current kvm mmu only reverse maps writable translation. This is used
to write-protect a page in case it becomes a pagetable.
But with swapping support, we need a reverse mapping of read-only pages as
well: when we evict a page, we need to remove any mapping to it, whether
writable or not.
Signed-off-by: Izik Eidus <izike@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
The current kvm mmu only reverse maps writable translation. This is used
to write-protect a page in case it becomes a pagetable.
But with swapping support, we need a reverse mapping of read-only pages as
well: when we evict a page, we need to remove any mapping to it, whether
writable or not.
Signed-off-by: Izik Eidus <izike@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
| drivers/kvm/mmu.c | diffblobblamehistory |