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Received: from BN8PR12MB3587.namprd12.prod.outlook.com (2603:10b6:408:43::13) by PH7PR12MB5712.namprd12.prod.outlook.com (2603:10b6:510:1e3::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5986.18; Wed, 11 Jan 2023 08:35:23 +0000 Received: from BN8PR12MB3587.namprd12.prod.outlook.com ([fe80::80d8:934f:caa7:67b0]) by BN8PR12MB3587.namprd12.prod.outlook.com ([fe80::80d8:934f:caa7:67b0%3]) with mapi id 15.20.5986.018; Wed, 11 Jan 2023 08:35:23 +0000 Message-ID: <08f2f79f-e79f-f2d8-2fa8-2cfd59004507@amd.com> Date: Wed, 11 Jan 2023 09:35:16 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.2 Subject: =?UTF-8?Q?Re=3a_=5bregression=2c_bisected=2c_pci/iommu=5d_Bug=c2=a0?= =?UTF-8?Q?216865_-_Black_screen_when_amdgpu_started_during_6=2e2-rc1_boot_w?= =?UTF-8?Q?ith_AMD_IOMMU_enabled?= Content-Language: en-US To: Matt Fagnani , Jason Gunthorpe Cc: Baolu Lu , Alex Deucher , "Pan, Xinhui" , Vasant Hegde , Thorsten Leemhuis , Joerg Roedel , "iommu@lists.linux.dev" , LKML , "regressions@lists.linux.dev" , Linux PCI , Bjorn Helgaas , amd-gfx@lists.freedesktop.org References: <15d0f9ff-2a56-b3e9-5b45-e6b23300ae3b@leemhuis.info> <5aa0e698-f715-0481-36e5-46505024ebc1@bell.net> <157c4ca4-370a-5d7e-fe32-c64d934f6979@amd.com> <223ee6d6-70ea-1d53-8bc2-2d22201d8dde@bell.net> <6fff9d10-f77f-e55a-9020-8a1bd34cf508@amd.com> <2d1b2183-7e93-f8a5-3c74-8f66824bc8f2@amd.com> <35b0f7db-e248-18ed-3e26-3f9f4f14f8c4@amd.com> <134da31d-2cf4-431f-2739-aa2940087245@bell.net> From: =?UTF-8?Q?Christian_K=c3=b6nig?= In-Reply-To: <134da31d-2cf4-431f-2739-aa2940087245@bell.net> Content-Type: text/plain; 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The assumption that you need ACS to enable PASID handling is simply incorrect. Going to send a revert of the offending patch with an in deep description of the problem. Thanks, Christian. Am 10.01.23 um 21:51 schrieb Matt Fagnani: > Christian, > > I'm attaching the output of sudo lspci -vvvv. I'm not sure what > $bus_id is in this case. I guess it might be 00 in 00:00.0. I attached > the dmesg from previous boots with 6.2-rc1 at > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugzilla.kernel.org%2Fshow_bug.cgi%3Fid%3D216865%23c2&data=05%7C01%7Cchristian.koenig%40amd.com%7Cc14ca7b3ead040ee279f08daf34c8687%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C638089808663927196%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000%7C%7C%7C&sdata=iFHmme68OeqRpw7zlSPp%2F1mB95DKCR%2FTAsjTcjT6S1s%3D&reserved=0 > as I mentioned at > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.kernel.org%2Fall%2F52583644-d875-a454-7288-8b00ea0566ae%40bell.net%2F&data=05%7C01%7Cchristian.koenig%40amd.com%7Cc14ca7b3ead040ee279f08daf34c8687%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C638089808663927196%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000%7C%7C%7C&sdata=j8ZppuXkhw4dD9HS6OwsvulZaV1R3W8Hu%2BW11%2BxMCuE%3D&reserved=0 > and 6.2-rc2 + Vasant's patch with rd.driver.blacklist=amdgpu on the > kernel command line at > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.kernel.org%2Fall%2Fff26929d-9fb0-3c85-2594-dc2937c1ba9a%40bell.net%2F&data=05%7C01%7Cchristian.koenig%40amd.com%7Cc14ca7b3ead040ee279f08daf34c8687%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C638089808663927196%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000%7C%7C%7C&sdata=i6fxlEn74v86MnFfgCmtYQ2JCql0sVsimZqioBiDyPk%3D&reserved=0 > I'm using the Radeon R5 integrated GPU which is called Wani in lspci > and Carrizo in dmesg. The CPU is AMD A10-9620P which is Bristol Ridge > or Excavator+ according to > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FList_of_AMD_accelerated_processing_units&data=05%7C01%7Cchristian.koenig%40amd.com%7Cc14ca7b3ead040ee279f08daf34c8687%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C638089808664083434%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000%7C%7C%7C&sdata=Ywp7MnbjYMeyXGGNFHOyn2A45IZSLIsShkIPEC4GB48%3D&reserved=0 > I'm using the internal Elan touchscreen in the laptop. I'm not using > the HDMI port for an external monitor or audio which I think is called > Kabini HDMI/DP Audio in lspci > > Thanks, > > Matt > > On 1/10/23 08:56, Christian König wrote: >> Am 10.01.23 um 14:51 schrieb Jason Gunthorpe: >>> On Tue, Jan 10, 2023 at 02:45:30PM +0100, Christian König wrote: >>> >>>> Since this is a device integrated in the CPU it could be that the >>>> ACS/ATS >>>> functionalities are controlled by the BIOS and can be enabled/disabled >>>> there. But this should always enable/disable both. >>> This sounds like a GPU driver bug then, it should tolerate PASID being >>> unavailable because of BIOS issues/whatever and not black screen on >>> boot? >> >> Yeah, potentially. Could I get a full "sudo lspci -vvvv -s $bus_id" + >> dmesg of that device? >> >> Thanks, >> Christian. >> >>> >>> Jason >>