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Message-Id: <20220407155645.940890-20-vkuznets@redhat.com>
Date:   Thu,  7 Apr 2022 17:56:33 +0200
From:   Vitaly Kuznetsov <vkuznets@...hat.com>
To:     kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Michael Kelley <mikelley@...rosoft.com>,
        Siddharth Chandrasekaran <sidcha@...zon.de>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 19/31] KVM: x86: Expose Hyper-V Direct TLB flush feature

With both nSVM and nVMX implementations in place, KVM can export
Hyper-V Direct TLB flush feature to userspace.

Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
---
 arch/x86/kvm/hyperv.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index f08cf295d750..7758ed3dc811 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -2801,6 +2801,7 @@ int kvm_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid,
 
 		case HYPERV_CPUID_NESTED_FEATURES:
 			ent->eax = evmcs_ver;
+			ent->eax |= HV_X64_NESTED_DIRECT_FLUSH;
 			ent->eax |= HV_X64_NESTED_MSR_BITMAP;
 
 			break;
-- 
2.35.1

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