diff options
author | Uri Lublin <uril@qumranet.com> | 2007-02-22 10:37:32 -0500 |
---|---|---|
committer | Avi Kivity <avi@qumranet.com> | 2007-03-04 04:12:43 -0500 |
commit | ff990d5952712c2e163b355946c39278da8407a8 (patch) | |
tree | 73766d7c8435ded99d8a107b4471a8020164d800 | |
parent | 02b27c1f802bfb60cc2cb5b763dde1b6b3479a7e (diff) |
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>
-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: | |||
748 | vcpu = vcpu_load_slot(kvm, i); | 748 | vcpu = vcpu_load_slot(kvm, i); |
749 | if (!vcpu) | 749 | if (!vcpu) |
750 | continue; | 750 | continue; |
751 | if (new.flags & KVM_MEM_LOG_DIRTY_PAGES) | ||
752 | do_remove_write_access(vcpu, mem->slot); | ||
751 | kvm_mmu_reset_context(vcpu); | 753 | kvm_mmu_reset_context(vcpu); |
752 | vcpu_put(vcpu); | 754 | vcpu_put(vcpu); |
753 | } | 755 | } |