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Mon, 2 Mar 2015 12:00:51 -0600 (CST) Received: from SATLEXDAG06.amd.com (10.181.40.13) by satlvexedge01.amd.com (10.177.96.28) with Microsoft SMTP Server (TLS) id 14.3.195.1; Mon, 2 Mar 2015 12:01:06 -0600 Received: from joelvmguard2.amd.com (10.180.168.240) by satlexdag06.amd.com (10.181.40.13) with Microsoft SMTP Server (TLS) id 14.3.195.1; Mon, 2 Mar 2015 13:00:52 -0500 Subject: [PATCH v2 2/2] x86: svm: make wbinvd faster From: Joel Schopp To: Gleb Natapov , Paolo Bonzini , CC: David Kaplan , David Kaplan , , Joerg Roedel , , Borislav Petkov Date: Mon, 2 Mar 2015 12:04:46 -0600 Message-ID: <20150302180446.25137.93897.stgit@joelvmguard2.amd.com> In-Reply-To: <20150302180030.25137.83460.stgit@joelvmguard2.amd.com> References: <20150302180030.25137.83460.stgit@joelvmguard2.amd.com> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-EOPAttributedMessage: 0 Received-SPF: None (protection.outlook.com: amd.com does not designate permitted sender hosts) Authentication-Results: spf=none (sender IP is 165.204.84.222) smtp.mailfrom=Joel.Schopp@amd.com; 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Ip=[165.204.84.222] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM2PR02MB477 X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:;SRVR:DM2PR02MB479; X-OriginatorOrg: amd4.onmicrosoft.com Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: David Kaplan No need to re-decode WBINVD since we know what it is from the intercept. Signed-off-by: David Kaplan [extracted from larger unlrelated patch, forward ported, tested] Signed-off-by: Joel Schopp Reviewed-by: Radim Kr?má? --- arch/x86/kvm/svm.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 0c9e377..794bca7 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -2774,6 +2774,13 @@ static int skinit_interception(struct vcpu_svm *svm) return 1; } +static int wbinvd_interception(struct vcpu_svm *svm) +{ + kvm_emulate_wbinvd(&svm->vcpu); + return 1; +} + + static int xsetbv_interception(struct vcpu_svm *svm) { u64 new_bv = kvm_read_edx_eax(&svm->vcpu); @@ -3374,7 +3381,7 @@ static int (*const svm_exit_handlers[])(struct vcpu_svm *svm) = { [SVM_EXIT_STGI] = stgi_interception, [SVM_EXIT_CLGI] = clgi_interception, [SVM_EXIT_SKINIT] = skinit_interception, - [SVM_EXIT_WBINVD] = emulate_on_interception, + [SVM_EXIT_WBINVD] = wbinvd_interception, [SVM_EXIT_MONITOR] = monitor_interception, [SVM_EXIT_MWAIT] = mwait_interception, [SVM_EXIT_XSETBV] = xsetbv_interception,