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| author | Uri Lublin <uril@qumranet.com> | 2007-02-22 18:37:32 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-03-04 12:12:43 +0300 |
| commit | ff990d5952712c2e163b355946c39278da8407a8 (patch) | |
| tree | 73766d7c8435ded99d8a107b4471a8020164d800 /drivers/kvm | |
| parent | 02b27c1f802bfb60cc2cb5b763dde1b6b3479a7e (diff) | |
| download | linux-ff990d5952712c2e163b355946c39278da8407a8.tar.xz | |
KVM: Remove write access permissions when dirty-page-logging is enabled
Enabling dirty page logging is done using KVM_SET_MEMORY_REGION ioctl.
If the memory region already exists, we need to remove write accesses,
so writes will be caught, and dirty pages will be logged.
Signed-off-by: Uri Lublin <uril@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm')
| -rw-r--r-- | drivers/kvm/kvm_main.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index be7694db285d..e48b4d7a350e 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -748,6 +748,8 @@ raced: vcpu = vcpu_load_slot(kvm, i); if (!vcpu) continue; + if (new.flags & KVM_MEM_LOG_DIRTY_PAGES) + do_remove_write_access(vcpu, mem->slot); kvm_mmu_reset_context(vcpu); vcpu_put(vcpu); } |