Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Received-SPF: Pass (protection.outlook.com: domain of amd.com designates
 165.204.84.17 as permitted sender) receiver=protection.outlook.com;
 client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C
From:   Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
To:     <linux-kernel@vger.kernel.org>, <kvm@vger.kernel.org>
CC:     <pbonzini@redhat.com>, <mlevitsk@redhat.com>, <seanjc@google.com>,
        <joro@8bytes.org>, <jon.grimm@amd.com>, <wei.huang2@amd.com>,
        <terry.bowman@amd.com>,
        Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Subject: [PATCH v6 07/17] KVM: SVM: Adding support for configuring x2APIC MSRs interception
Date:   Thu, 19 May 2022 05:26:59 -0500
Message-ID: <20220519102709.24125-8-suravee.suthikulpanit@amd.com>
In-Reply-To: <20220519102709.24125-1-suravee.suthikulpanit@amd.com>
References: <20220519102709.24125-1-suravee.suthikulpanit@amd.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 May 2022 10:27:32.5452
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: 1f6f1525-7045-4675-e3d9-08da39822f2f
X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com]
X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT042.eop-nam11.prod.protection.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5892
X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED,
        DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,
        RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS,T_SCC_BODY_TEXT_LINE
        autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

When enabling x2APIC virtualization (x2AVIC), the interception of
x2APIC MSRs must be disabled to let the hardware virtualize guest
MSR accesses.

Current implementation keeps track of list of MSR interception state
in the svm_direct_access_msrs array. Therefore, extends the array to
include x2APIC MSRs.

Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
---
 arch/x86/kvm/svm/svm.c | 25 +++++++++++++++++++++++++
 arch/x86/kvm/svm/svm.h |  4 ++--
 2 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 196bca5751a1..2cf6710333f8 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -100,6 +100,31 @@ static const struct svm_direct_access_msrs {
 	{ .index = MSR_IA32_CR_PAT,			.always = false },
 	{ .index = MSR_AMD64_SEV_ES_GHCB,		.always = true  },
 	{ .index = MSR_TSC_AUX,				.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_ID),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_LVR),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_TASKPRI),	.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_ARBPRI),	.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_PROCPRI),	.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_EOI),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_RRR),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_LDR),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_DFR),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_SPIV),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_ISR),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_TMR),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_IRR),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_ESR),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_ICR),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_ICR2),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_LVTT),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_LVTTHMR),	.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_LVTPC),	.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_LVT0),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_LVT1),		.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_LVTERR),	.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_TMICT),	.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_TMCCT),	.always = false },
+	{ .index = (APIC_BASE_MSR + APIC_TDCR),		.always = false },
 	{ .index = MSR_INVALID,				.always = false },
 };
 
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index 1731c1f3884b..16f1d117c98b 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -29,8 +29,8 @@
 #define	IOPM_SIZE PAGE_SIZE * 3
 #define	MSRPM_SIZE PAGE_SIZE * 2
 
-#define MAX_DIRECT_ACCESS_MSRS	21
-#define MSRPM_OFFSETS	16
+#define MAX_DIRECT_ACCESS_MSRS	46
+#define MSRPM_OFFSETS	32
 extern u32 msrpm_offsets[MSRPM_OFFSETS] __read_mostly;
 extern bool npt_enabled;
 extern int vgif;
-- 
2.25.1