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Peter Anvin" , Thomas Gleixner , Makarand Sonare , Sean Christopherson References: <0ebda5c6-097e-20bb-d695-f444761fbb79@amd.com> <0d8f6573-f7f6-d355-966a-9086a00ef56c@amd.com> <1451b13e-c67f-8948-64ff-5c01cfb47ea7@redhat.com> <3929a987-5d09-6a0c-5131-ff6ffe2ae425@amd.com> <7a7428f4-26b3-f704-d00b-16bcf399fd1b@amd.com> <78cc2dc7-a2ee-35ac-dd47-8f3f8b62f261@redhat.com> <20210311200755.GE5829@zn.tnic> <20210311203206.GF5829@zn.tnic> <2ca37e61-08db-3e47-f2b9-8a7de60757e6@amd.com> <20210311214013.GH5829@zn.tnic> Message-ID: <4a72f780-3797-229e-a938-6dc5b14bec8d@amd.com> Date: Thu, 11 Mar 2021 16:15:37 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [165.204.77.1] X-ClientProxiedBy: SN4PR0701CA0034.namprd07.prod.outlook.com (2603:10b6:803:2d::15) To SN1PR12MB2560.namprd12.prod.outlook.com (2603:10b6:802:26::19) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [10.236.31.136] (165.204.77.1) by SN4PR0701CA0034.namprd07.prod.outlook.com (2603:10b6:803:2d::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3912.17 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: =?utf-8?B?MEJIWGVQZmNnVGR2S1hLb0Fqb1F2QXcwc0dvN2s4QnBWbHMzcUtDaUMyS1ph?= =?utf-8?B?U25xWDY1N211a0d1OE50a1lLVFUzY29mRXVLNU1TSThLQmFrZW9OZW9meURv?= =?utf-8?B?eVR2YzdTaEpGZ1dUS0FmY1NPVXZzV1dXajRuSEt1ZWh6RlJXSVVhbm9uenpu?= =?utf-8?B?MWVHQTA4OUtPNXJrM1NnRlYvajB4TkNSTWlSOVR1MzhKL2FUcngvUWhtcjZl?= =?utf-8?B?SEV6MzVTQnpUS1VzS2wyTU9XVER2enJKeHJKVFYxbGx0QitFVUppU3kvdkJY?= =?utf-8?B?b01saERkUGFnSWV3Rm1CTlE3STdxa1cvcC9JWGdYM0RmcWYwVUgvQ1Rnb0J6?= =?utf-8?B?N0wwdFZ2RzBEQ0t1VmhNdjV3VVgyZzZjakdDb3JjcFpaNzE2OFhZbzVldEgy?= =?utf-8?B?U1hKUVFRY05ESVBneXNkZHFxeUxtenpFeTNwL2xHZzVSaTdFcUZVSzNBb3Ry?= =?utf-8?B?WTZNSElvejFHeUhyTVlKU05DZCtJSk40ZWlVMVVTK0ErKzllMzhOZURTRTF1?= =?utf-8?B?NzZ1WjRnUFdCQng2TURNa1JTa2lxQjdYeEQ0RFYxMDVHeGszTUxwL2NyTjBm?= =?utf-8?B?emdSS05OMm5zVEdFWlh5VWVIVU9iYkJVTjAxdFFnL0NsL2MvdTFLL1FvaEZq?= =?utf-8?B?WnRJRkVyRCs2VmJZcERjVUpLamNib200YldCQjB5THRDN24zc3ZaenQ4d1gy?= =?utf-8?B?K2ZaZGF1bFA5YVFFTkpKZktSQmhpV2lUOTE0eW95c0R4ejh4UmdWZjFyN0F3?= =?utf-8?B?NWFRaE9TUVNkaDNoTkYwQnNjL0hNaS9ZaDd0VzIxQWt5ZTNRQ0ZoZjdUQmJS?= =?utf-8?B?MXBuS3Z5RXhFOGxlTzdWczFXcG9kclljdU9JZ0VLb1R4WDA4QXpNMUdHVUxZ?= =?utf-8?B?U1Q0UzYvZXpuclI0eFB1T0pRVUVUTGFjWit5RVRHVHNob0Q4ekR5VXJMNlNE?= =?utf-8?B?SUhDS2FWanRNTk1VUlJZZ1JVMW56MGhtOFBqZndaM0Yxa1VjbmdMQXlyNGpK?= =?utf-8?B?a0ROSGc4c2toakZTS2kzSzZqdWwyaGJsUHp2OXpRRUppOWVoNEg3TGFKbUlJ?= =?utf-8?B?MWRtOVladnZGQWlwUUp0ZkREN0ZLZTVmMUFhRnZMckNFSFZCTjQrZHpxYzhv?= =?utf-8?B?TUM2Z2hwL1JxTjhoekQ5ZCs4cE1uRFhqYUtxVDdlalJKeFl0VVo5bHh4VFRI?= =?utf-8?B?dFo0UWIyTEhwL05EMlB4eSs2MXVvcUpRZUxCSHdXdGtxcmZEbU1WSElPSWZ2?= =?utf-8?B?RHpwYXA1ZG1qQm1hTytpT0RKeG5ZbVFDK285dFkraC84T1FMRHo0TzVvSTFM?= =?utf-8?B?ejhpWHhqWm9DRGxLc2NuK0l3ek5rTHo2QVhDaUZDcU8vN3htZC94ZERodS92?= =?utf-8?B?UXNxYzNJSjdXcUlZWW5tTU1ab2QxRmdzRjArQnNmUWwzb1IvQy9YNDc1YUxI?= =?utf-8?B?dW5iT2lPamJMMTErbmFKZUJobFd6YlNlRitaa0k4Z2ZMaFRYTDBodVJnSkJp?= =?utf-8?B?bDQ2NjFBM3lYNEtGN2F5RGRMdmcrbmFJaEk0eGJ1ODVwODVLUUNicWtUN1kr?= =?utf-8?B?WEJtNkZRQWQ5dU4xOHR4ZXNBcHcvOXVUMEFKUjFsQkhESncyaStWblBtTm5U?= =?utf-8?B?U0dLYUt0dGNZdHpoZGt2MlIvZHZVYnM0RTdQVmQwT096WFRSM0IrRGpZMk12?= =?utf-8?B?QlRoR1R0eFhKYlA5UElucCtpV1J6bkhrcXlPU0tIeHY3STZpS1ZMdUlCZnBZ?= =?utf-8?Q?54xIvHVQCYfbrjlAPFtQ6MoSO8NCxSVLYblq5I3?= X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 39baa611-7369-4c40-bb17-08d8e4db33a8 X-MS-Exchange-CrossTenant-AuthSource: SN1PR12MB2560.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Mar 2021 22:15:39.0140 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: +grMZFiam9yY7ThDaXKFsH3L7ynODwJQ3xgkimH7szbpVSHsEGxH/YdqUp6Pi9G1 X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA0PR12MB4560 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/11/21 4:04 PM, Babu Moger wrote: > > > On 3/11/21 3:40 PM, Borislav Petkov wrote: >> On Thu, Mar 11, 2021 at 02:57:04PM -0600, Babu Moger wrote: >>> It is related PCID and INVPCID combination. Few more details. >>> 1. System comes up fine with "noinvpid". So, it happens when invpcid is >>> enabled. >> >> Which system, host or guest? >> >>> 2. Host is coming up fine. Problem is with the guest. >> >> Aha, guest. >> >>> 3. Problem happens with Debian 9. Debian kernel version is 4.9.0-14. >>> 4. Debian 10 is fine. >>> 5. Upstream kernels are fine. Tried on v5.11 and it is working fine. >>> 6. Git bisect pointed to commit 47811c66356d875e76a6ca637a9d384779a659bb. >>> >>> Let me know if want me to try something else. >> >> Yes, I assume host has the patches which belong to this thread? > > Yes. Host has all these patches. Right now I am on 5.12.0-rc2. I just > updated yesterday. I was able to reproduce 5.11 also. > > >> >> So please describe: >> >> 1. host has these patches, cmdline params, etc. My host is # cat /etc/redhat-release Red Hat Enterprise Linux release 8.3 (Ootpa) # uname -r 5.12.0-rc2+ > > # cat /proc/cmdline > BOOT_IMAGE=(hd0,gpt2)/vmlinuz-5.12.0-rc2+ root=/dev/mapper/rhel-root ro > crashkernel=auto resume=/dev/mapper/rhel-swap rd.lvm.lv=rhel/root > rd.lvm.lv=rhel/swap ras=cec_disable nmi_watchdog=0 warn_ud2=on selinux=0 > earlyprintk=serial,ttyS1,115200n8 console=ttyS1,115200n8 > > >> 2. guest is a 4.9 kernel, cmdline params, etc. > > I use qemu command line to bring up the guest. Make sure to use "-cpu host". > > qemu-system-x86_64 -name deb9 -m 16384 -smp cores=16,threads=1,sockets=1 > -hda vdisk-deb.qcow2 -enable-kvm -net nic -net > bridge,br=virbr0,helper=/usr/libexec/qemu-bridge-helper -cpu host,+svm > -nographic > > > The grub command line looks like this on the guest. > > cat /proc/cmdline > BOOT_IMAGE=/boot/vmlinuz-4.9.0-14-amd64 > root=UUID=a0069240-cd60-4795-a391-273266dbae29 ro console=ttyS0,112500n8 > earlyprintk >