Similar to nSVM, KVM needs to know L2's VM_ID/VP_ID and Partition
assist page address to handle L2 TLB flush requests.
Reviewed-by: Maxim Levitsky <mlevitsk@xxxxxxxxxx>
Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
---
arch/x86/kvm/svm/hyperv.h | 16 ++++++++++++++++
arch/x86/kvm/svm/nested.c | 2 ++
2 files changed, 18 insertions(+)
diff --git a/arch/x86/kvm/svm/hyperv.h b/arch/x86/kvm/svm/hyperv.h
index 7d6d97968fb9..8cf702fed7e5 100644
--- a/arch/x86/kvm/svm/hyperv.h
+++ b/arch/x86/kvm/svm/hyperv.h
@@ -9,6 +9,7 @@
#include <asm/mshyperv.h>
#include "../hyperv.h"
+#include "svm.h"
/*
* Hyper-V uses the software reserved 32 bytes in VMCB
@@ -32,4 +33,19 @@ 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 76dcc8a3e849..ab3b63bc2eb4 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -818,6 +818,8 @@ int enter_svm_guest_mode(struct kvm_vcpu *vcpu, u64 vmcb12_gpa,
if (kvm_vcpu_apicv_active(vcpu))
kvm_make_request(KVM_REQ_APICV_UPDATE, vcpu);
+ nested_svm_hv_update_vm_vp_ids(vcpu);
+
return 0;
}
--
2.35.3
