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Subject[PATCH RFC 10/19] KVM: nSVM: Keep track of Hyper-V hv_vm_id/hv_vp_id
Date
Similar to nSVM, KVM needs to know L2's VM_ID/VP_ID and Partition
assist page address to handle Direct TLB flush requests.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
arch/x86/kvm/svm/hyperv.h | 15 +++++++++++++++
arch/x86/kvm/svm/nested.c | 2 ++
2 files changed, 17 insertions(+)

diff --git a/arch/x86/kvm/svm/hyperv.h b/arch/x86/kvm/svm/hyperv.h
index 7d6d97968fb9..27479469f672 100644
--- a/arch/x86/kvm/svm/hyperv.h
+++ b/arch/x86/kvm/svm/hyperv.h
@@ -32,4 +32,19 @@ struct hv_enlightenments {
*/
#define VMCB_HV_NESTED_ENLIGHTENMENTS VMCB_SW

+static inline void nested_svm_hv_update_vm_vp_ids(struct kvm_vcpu *vcpu)
+{
+ struct vcpu_svm *svm = to_svm(vcpu);
+ struct hv_enlightenments *hve =
+ (struct hv_enlightenments *)svm->nested.ctl.reserved_sw;
+ struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu);
+
+ if (!hv_vcpu)
+ return;
+
+ hv_vcpu->nested.pa_page_gpa = hve->partition_assist_page;
+ hv_vcpu->nested.vm_id = hve->hv_vm_id;
+ hv_vcpu->nested.vp_id = hve->hv_vp_id;
+}
+
#endif /* __ARCH_X86_KVM_SVM_HYPERV_H__ */
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index 96bab464967f..f47570fa503e 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -752,6 +752,8 @@ int nested_svm_vmrun(struct kvm_vcpu *vcpu)

svm->nested.nested_run_pending = 1;

+ nested_svm_hv_update_vm_vp_ids(vcpu);
+
if (enter_svm_guest_mode(vcpu, vmcb12_gpa, vmcb12, true))
goto out_exit_err;

--
2.35.1
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