Message ID | 20220406043621.20212-3-po-hsu.lin@canonical.com |
---|---|
State | New |
Headers | show
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[223.137.226.208]) by smtp.gmail.com with ESMTPSA id v17-20020a63b951000000b0038644f62aeesm14551705pgo.68.2022.04.05.21.36.43 for <kernel-team@lists.ubuntu.com> (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Apr 2022 21:36:43 -0700 (PDT) From: Po-Hsu Lin <po-hsu.lin@canonical.com> To: kernel-team@lists.ubuntu.com Subject: [Bionic][SRU][PATCH 1/1] KVM: nVMX: Set LDTR to its architecturally defined value on nested VM-Exit Date: Wed, 6 Apr 2022 12:36:21 +0800 Message-Id: <20220406043621.20212-3-po-hsu.lin@canonical.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220406043621.20212-1-po-hsu.lin@canonical.com> References: <20220406043621.20212-1-po-hsu.lin@canonical.com> MIME-Version: 1.0 X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions <kernel-team.lists.ubuntu.com> List-Unsubscribe: <https://lists.ubuntu.com/mailman/options/kernel-team>, <mailto:kernel-team-request@lists.ubuntu.com?subject=unsubscribe> List-Archive: <https://lists.ubuntu.com/archives/kernel-team> List-Post: <mailto:kernel-team@lists.ubuntu.com> List-Help: <mailto:kernel-team-request@lists.ubuntu.com?subject=help> List-Subscribe: <https://lists.ubuntu.com/mailman/listinfo/kernel-team>, <mailto:kernel-team-request@lists.ubuntu.com?subject=subscribe> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" <kernel-team-bounces@lists.ubuntu.com> |
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 3634ab6..fda0539 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -12003,6 +12003,10 @@ static void load_vmcs12_host_state(struct kvm_vcpu *vcpu, }; vmx_set_segment(vcpu, &seg, VCPU_SREG_TR); + memset(&seg, 0, sizeof(seg)); + seg.unusable = 1; + vmx_set_segment(vcpu, &seg, VCPU_SREG_LDTR); + kvm_set_dr(vcpu, 7, 0x400); vmcs_write64(GUEST_IA32_DEBUGCTL, 0);