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>
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@ -748,6 +748,8 @@ raced:
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vcpu = vcpu_load_slot(kvm, i);
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if (!vcpu)
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continue;
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if (new.flags & KVM_MEM_LOG_DIRTY_PAGES)
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do_remove_write_access(vcpu, mem->slot);
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kvm_mmu_reset_context(vcpu);
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vcpu_put(vcpu);
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}
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