KVM: Add missing calls to mark_page_dirty()
A few places where we modify guest memory fail to call mark_page_dirty(), causing live migration to fail. This adds the missing calls. Signed-off-by: Uri Lublin <uril@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
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@ -228,12 +228,15 @@ int kvm_write_guest(struct kvm_vcpu *vcpu, gva_t addr, unsigned long size,
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unsigned now;
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unsigned offset;
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hva_t guest_buf;
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gfn_t gfn;
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paddr = gva_to_hpa(vcpu, addr);
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if (is_error_hpa(paddr))
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break;
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gfn = vcpu->mmu.gva_to_gpa(vcpu, addr) >> PAGE_SHIFT;
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mark_page_dirty(vcpu->kvm, gfn);
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guest_buf = (hva_t)kmap_atomic(
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pfn_to_page(paddr >> PAGE_SHIFT), KM_USER0);
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offset = addr & ~PAGE_MASK;
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@ -953,6 +956,7 @@ static int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
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return 0;
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page = gfn_to_page(m, gpa >> PAGE_SHIFT);
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kvm_mmu_pre_write(vcpu, gpa, bytes);
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mark_page_dirty(vcpu->kvm, gpa >> PAGE_SHIFT);
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virt = kmap_atomic(page, KM_USER0);
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memcpy(virt + offset_in_page(gpa), &val, bytes);
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kunmap_atomic(virt, KM_USER0);
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@ -1294,6 +1298,7 @@ static int vcpu_register_para(struct kvm_vcpu *vcpu, gpa_t para_state_gpa)
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if (is_error_hpa(para_state_hpa))
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goto err_gp;
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mark_page_dirty(vcpu->kvm, para_state_gpa >> PAGE_SHIFT);
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para_state_page = pfn_to_page(para_state_hpa >> PAGE_SHIFT);
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para_state = kmap_atomic(para_state_page, KM_USER0);
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@ -1323,6 +1328,7 @@ static int vcpu_register_para(struct kvm_vcpu *vcpu, gpa_t para_state_gpa)
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vcpu->para_state_gpa = para_state_gpa;
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vcpu->hypercall_gpa = hypercall_gpa;
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mark_page_dirty(vcpu->kvm, hypercall_gpa >> PAGE_SHIFT);
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hypercall = kmap_atomic(pfn_to_page(hypercall_hpa >> PAGE_SHIFT),
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KM_USER1) + (hypercall_hpa & ~PAGE_MASK);
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kvm_arch_ops->patch_hypercall(vcpu, hypercall);
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