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From:   Yan Zhao <yan.y.zhao@intel.com>
To:     iommu@lists.linux.dev, kvm@vger.kernel.org,
        linux-kernel@vger.kernel.org
Cc:     alex.williamson@redhat.com, jgg@nvidia.com, pbonzini@redhat.com,
        seanjc@google.com, joro@8bytes.org, will@kernel.org,
        robin.murphy@arm.com, kevin.tian@intel.com,
        baolu.lu@linux.intel.com, dwmw2@infradead.org, yi.l.liu@intel.com,
        Yan Zhao <yan.y.zhao@intel.com>
Subject: [RFC PATCH 42/42] KVM: VMX: Notify importers of exported TDP to flush TLBs on KVM flushes EPT
Date:   Sat,  2 Dec 2023 17:37:12 +0800
Message-Id: <20231202093712.16049-1-yan.y.zhao@intel.com>
In-Reply-To: <20231202091211.13376-1-yan.y.zhao@intel.com>
References: <20231202091211.13376-1-yan.y.zhao@intel.com>
Precedence: bulk

Call TDP FD helper to notify importers of exported TDP to flush TLBs when
KVM flushes EPT.

Signed-off-by: Yan Zhao <yan.y.zhao@intel.com>
---
 arch/x86/kvm/vmx/vmx.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 2fec351a3fa5b..3a2b6ddcde108 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7547,6 +7547,9 @@ static int vmx_vcpu_create(struct kvm_vcpu *vcpu)
 static int vmx_flush_remote_tlbs_range(struct kvm *kvm, gfn_t gfn, gfn_t nr_pages)
 {
 	kvm_make_all_cpus_request(kvm, KVM_REQ_TLB_FLUSH);
+#if IS_ENABLED(CONFIG_KVM_INTEL_EXPORTED_EPT)
+	kvm_tdp_fd_flush_notify(kvm, gfn, nr_pages);
+#endif
 	return 0;
 }
 
-- 
2.17.1