Commit b0c9c25e authored by Vitaly Kuznetsov's avatar Vitaly Kuznetsov Committed by Paolo Bonzini
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KVM: x86: Introduce .hv_inject_synthetic_vmexit_post_tlb_flush() nested hook 



Hyper-V supports injecting synthetic L2->L1 exit after performing
L2 TLB flush operation but the procedure is vendor specific. Introduce
.hv_inject_synthetic_vmexit_post_tlb_flush nested hook for it.

Reviewed-by: default avatarMaxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: default avatarSean Christopherson <seanjc@google.com>
Signed-off-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Message-Id: <20221101145426.251680-22-vkuznets@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent e45aa244

arch/x86/include/asm/kvm_host.h

+1 −0
Original line number Diff line number Diff line
@@ -1722,6 +1722,7 @@ struct kvm_x86_nested_ops { 
	int (*enable_evmcs)(struct kvm_vcpu *vcpu,

			    uint16_t *vmcs_version);

	uint16_t (*get_evmcs_version)(struct kvm_vcpu *vcpu);

	void (*hv_inject_synthetic_vmexit_post_tlb_flush)(struct kvm_vcpu *vcpu);

};



struct kvm_x86_init_ops {

arch/x86/kvm/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -26,7 +26,8 @@ kvm-intel-y += vmx/vmx.o vmx/vmenter.o vmx/pmu_intel.o vmx/vmcs12.o \ 
			   vmx/hyperv.o vmx/nested.o vmx/posted_intr.o

kvm-intel-$(CONFIG_X86_SGX_KVM)	+= vmx/sgx.o



kvm-amd-y		+= svm/svm.o svm/vmenter.o svm/pmu.o svm/nested.o svm/avic.o svm/sev.o

kvm-amd-y		+= svm/svm.o svm/vmenter.o svm/pmu.o svm/nested.o svm/avic.o \

			   svm/sev.o svm/hyperv.o



ifdef CONFIG_HYPERV

kvm-amd-y		+= svm/svm_onhyperv.o

arch/x86/kvm/svm/hyperv.c

0 → 100644
+11 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * AMD SVM specific code for Hyper-V on KVM.

 *

 * Copyright 2022 Red Hat, Inc. and/or its affiliates.

 */

#include "hyperv.h"



void svm_hv_inject_synthetic_vmexit_post_tlb_flush(struct kvm_vcpu *vcpu)

{

}

arch/x86/kvm/svm/hyperv.h

+2 −0
Original line number Diff line number Diff line
@@ -25,4 +25,6 @@ static inline void nested_svm_hv_update_vm_vp_ids(struct kvm_vcpu *vcpu) 
	hv_vcpu->nested.vp_id = hve->hv_vp_id;

}



void svm_hv_inject_synthetic_vmexit_post_tlb_flush(struct kvm_vcpu *vcpu);



#endif /* __ARCH_X86_KVM_SVM_HYPERV_H__ */

arch/x86/kvm/svm/nested.c

+1 −0
Original line number Diff line number Diff line
@@ -1730,4 +1730,5 @@ struct kvm_x86_nested_ops svm_nested_ops = { 
	.get_nested_state_pages = svm_get_nested_state_pages,

	.get_state = svm_get_nested_state,

	.set_state = svm_set_nested_state,

	.hv_inject_synthetic_vmexit_post_tlb_flush = svm_hv_inject_synthetic_vmexit_post_tlb_flush,

};