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Sat, 5 Aug 2023 23:37:26 +0000 Received: from SA1PR21MB1335.namprd21.prod.outlook.com ([fe80::d4d:7c16:fa93:9870]) by SA1PR21MB1335.namprd21.prod.outlook.com ([fe80::d4d:7c16:fa93:9870%5]) with mapi id 15.20.6699.000; Sat, 5 Aug 2023 23:37:26 +0000 From: Dexuan Cui To: Wei Liu , Tianyu Lan CC: KY Srinivasan , Haiyang Zhang , "tglx@linutronix.de" , "mingo@redhat.com" , "bp@alien8.de" , "dave.hansen@linux.intel.com" , "x86@kernel.org" , "hpa@zytor.com" , "daniel.lezcano@linaro.org" , "arnd@arndb.de" , "Michael Kelley (LINUX)" , Tianyu Lan , "linux-arch@vger.kernel.org" , "linux-hyperv@vger.kernel.org" , "linux-kernel@vger.kernel.org" , vkuznets Subject: RE: [PATCH V4 0/9] x86/hyperv: Add AMD sev-snp enlightened guest support on hyperv Thread-Topic: [PATCH V4 0/9] x86/hyperv: Add AMD sev-snp enlightened guest support on hyperv Thread-Index: AQHZxyxCzsivoayvP0umqaqQjq23k6/cXC9A Date: Sat, 5 Aug 2023 23:37:26 +0000 Message-ID: References: <20230804152254.686317-1-ltykernel@gmail.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_ActionId=37bda7a6-2038-4d7f-8679-761f964c4b79;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_ContentBits=0;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Enabled=true;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Method=Standard;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_Name=Internal;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_SetDate=2023-08-05T23:33:40Z;MSIP_Label_f42aa342-8706-4288-bd11-ebb85995028c_SiteId=72f988bf-86f1-41af-91ab-2d7cd011db47; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SA1PR21MB1335.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: bbbe4c18-e404-464e-d319-08db960cecfa X-MS-Exchange-CrossTenant-originalarrivaltime: 05 Aug 2023 23:37:26.2635 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: dhxfjW/ToiZ72qytapZt5z1wqIISQ76Gy40CjnbVxml41Q4aR4xUoEQS8SF4L68kD85q2fwXNAnYM3dJShGV3Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA0PR21MB4006 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NONE 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: X-Mailing-List: linux-kernel@vger.kernel.org > From: Wei Liu > Sent: Friday, August 4, 2023 4:35 PM > To: Tianyu Lan > [...] > On Fri, Aug 04, 2023 at 11:22:44AM -0400, Tianyu Lan wrote: > > From: Tianyu Lan > [...] > > Tianyu Lan (9): [...] > > x86/hyperv: Use vmmcall to implement Hyper-V hypercall in sev-snp ... Unluckily this commit causes a crash on Intel CPUs (see the below call-trac= e). I made a fix here: https://github.com/dcui/linux/commit/c4db45f6256248435b2a303b264ecbb41320c4= 1d I guess Wei can squash the fix into Tianyu's commit in the hyperv-next bran= ch? [ 0.861465] invalid opcode: 0000 [#1] PREEMPT SMP [ 0.865489] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.5.0-rc4-decui-hc= l+ #1 [ 0.869194] Hardware name: Microsoft Corporation Virtual Machine/Virtual= Machine, BIOS Hyper-V UEFI Release v4.1 04/20/2023 [ 0.875049] RIP: 0010:hv_query_ext_cap+0x7a/0x130 [ 0.879626] Code: 83 72 57 48 c7 c6 00 00 00 80 48 2b 35 0f f2 9d 00 48 = 01 f0 48 8b 35 5d 3e 3d 01 48 85 f6 74 2a b9 01 80 00 00 31 d2 49 89 c0 <0f= > 01 d9 c6 05 d4 f2 20 02 01 66 85 c0 74 aa 48 89 c6 48 c7 c7 20 [ 0.897457] RSP: 0000:ffffffff82803e50 EFLAGS: 00010246 [ 0.900194] RAX: 00000000074f72e0 RBX: 0000000000000000 RCX: 00000000000= 08001 [ 0.903955] RDX: 0000000000000000 RSI: ffffc90000017000 RDI: 00000000000= 00000 [ 0.908445] RBP: ffffffff82803e60 R08: 00000000074f72e0 R09: 00000000000= 00001 [ 0.916354] R10: 0720072007200720 R11: 0720072007200720 R12: 00000000000= 00000 [ 0.924285] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff828= 0edb8 [ 0.929481] FS: 0000000000000000(0000) GS:ffff8880f6800000(0000) knlGS:= 0000000000000000 [ 0.933589] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.936526] CR2: ffff888507fff000 CR3: 0000000006036001 CR4: 00000000000= 200f0 [ 0.942279] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 00000000000= 00000 [ 0.950573] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 00000000000= 00400 [ 0.958417] Call Trace: [ 0.959827] [ 0.961044] ? show_regs+0x64/0x70 [ 0.962872] ? __die_body+0x20/0x70 [ 0.964741] ? die+0x3e/0x60 [ 0.966273] ? do_trap+0xd7/0x100 [ 0.967922] ? do_error_trap+0x71/0x90 [ 0.970027] ? hv_query_ext_cap+0x7a/0x130 [ 0.974573] ? exc_invalid_op+0x53/0x70 [ 0.978961] ? hv_query_ext_cap+0x7a/0x130 [ 0.983977] ? asm_exc_invalid_op+0x1b/0x20 [ 0.988932] ? hv_query_ext_cap+0x7a/0x130 [ 0.991413] hyperv_init+0x2fe/0x5f0 [ 0.993373] apic_intr_mode_init+0x3e/0x100 [ 0.995655] x86_late_time_init+0x1b/0x30 [ 0.997832] start_kernel+0x617/0xa70 [ 0.999546] x86_64_start_reservations+0x18/0x30 [ 1.003761] x86_64_start_kernel+0xc0/0x110 [ 1.008815] secondary_startup_64_no_verify+0x17e/0x18b [ Ubuntu [ *Advanced options for Ubuntu [ 1.021465] ---[ end trace 0000000000000000 ]--- [ 1.024093] RIP: 0010:hv_query_ext_cap+0x7a/0x130 [ 1.026769] Code: 83 72 57 48 c7 c6 00 00 00 80 48 2b 35 0f f2 9d 00 48 = 01 f0 48 8b 35 5d 3e 3d 01 48 85 f6 74 2a b9 01 80 00 00 31 d2 49 89 c0 <0f= > 01 d9 c6 05 d4 f2 20 02 01 66 85 c0 74 aa 48 89 c6 48 c7 c7 20 [ 1.042358] RSP: 0000:ffffffff82803e50 EFLAGS: 00010246 [ 1.049317] RAX: 00000000074f72e0 RBX: 0000000000000000 RCX: 00000000000= 08001 [ 1.054740] RDX: 0000000000000000 RSI: ffffc90000017000 RDI: 00000000000= 00000 [ 1.059058] RBP: ffffffff82803e60 R08: 00000000074f72e0 R09: 00000000000= 00001 [ 1.062406] R10: 0720072007200720 R11: 0720072007200720 R12: 00000000000= 00000 [ 1.070915] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff828= 0edb8 [ 1.080300] FS: 0000000000000000(0000) GS:ffff8880f6800000(0000) knlGS:= 0000000000000000 [ 1.086956] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.090242] CR2: ffff888507fff000 CR3: 0000000006036001 CR4: 00000000000= 200f0 [ 1.093949] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 00000000000= 00000 [ 1.101352] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 00000000000= 00400