From: Baolu Lu <baolu.lu@linux.intel.com>
To: Vasant Hegde <vasant.hegde@amd.com>,
Matt Fagnani <matt.fagnani@bell.net>,
Thorsten Leemhuis <regressions@leemhuis.info>
Cc: baolu.lu@linux.intel.com, Joerg Roedel <jroedel@suse.de>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
LKML <linux-kernel@vger.kernel.org>,
"regressions@lists.linux.dev" <regressions@lists.linux.dev>,
Linux PCI <linux-pci@vger.kernel.org>,
Bjorn Helgaas <bhelgaas@google.com>
Subject: Re: [regression, bisected, pci/iommu] Bug 216865 - Black screen when amdgpu started during 6.2-rc1 boot with AMD IOMMU enabled
Date: Thu, 5 Jan 2023 18:37:51 +0800 [thread overview]
Message-ID: <6b5baa30-c218-0845-d6c2-32ac21ed6a6d@linux.intel.com> (raw)
In-Reply-To: <6fff9d10-f77f-e55a-9020-8a1bd34cf508@amd.com>
On 2023/1/5 18:27, Vasant Hegde wrote:
> On 1/5/2023 6:39 AM, Matt Fagnani wrote:
>> I built 6.2-rc2 with the patch applied. The same black screen problem happened
>> with 6.2-rc2 with the patch. I tried to use early kdump with 6.2-rc2 with the
>> patch twice by panicking the kernel with sysrq+alt+c after the black screen
>> happened. The system rebooted after about 10-20 seconds both times, but no kdump
>> and dmesg files were saved in /var/crash. I'm attaching the lspci -vvv output as
>> requested.
>>
> Thanks for testing. As mentioned earlier I was not expecting this patch to fix
> the black screen issue. It should fix kernel warnings and IOMMU page fault
> related call traces. By any chance do you have the kernel boot logs?
>
>
> @Baolu,
> Looking into lspci output, it doesn't list ACS feature for Graphics card. So
> with your fix it didn't enable PASID and hence it failed to boot.
So do you mind telling why does the PASID need to be enabled for the
graphic device? Or in another word, what does the graphic driver use the
PASID for?
--
Best regards,
baolu
next prev parent reply other threads:[~2023-01-05 10:37 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-30 8:18 [regression, bisected, pci/iommu] Bug 216865 - Black screen when amdgpu started during 6.2-rc1 boot with AMD IOMMU enabled Thorsten Leemhuis
2023-01-03 10:30 ` Joerg Roedel
2023-01-03 19:06 ` Matt Fagnani
[not found] ` <5aa0e698-f715-0481-36e5-46505024ebc1@bell.net>
2023-01-04 6:54 ` Baolu Lu
2023-01-04 15:50 ` Vasant Hegde
2023-01-05 1:09 ` Matt Fagnani
2023-01-05 10:27 ` Vasant Hegde
2023-01-05 10:37 ` Baolu Lu [this message]
2023-01-05 10:46 ` Vasant Hegde
2023-01-05 14:46 ` Deucher, Alexander
2023-01-05 15:27 ` Felix Kuehling
2023-01-06 5:48 ` Baolu Lu
2023-02-15 15:39 ` Bjorn Helgaas
2023-02-16 0:35 ` Felix Kuehling
2023-02-16 0:44 ` Jason Gunthorpe
2023-02-16 5:37 ` Vasant Hegde
2023-02-16 14:55 ` Felix Kuehling
2023-02-16 14:53 ` Felix Kuehling
2023-02-16 5:25 ` Vasant Hegde
2023-02-16 18:59 ` Matt Fagnani
2023-02-16 19:59 ` Felix Kuehling
2023-02-17 5:36 ` Vasant Hegde
2023-02-17 5:23 ` Vasant Hegde
2023-01-05 19:51 ` Matt Fagnani
2023-01-06 7:28 ` Matt Fagnani
2023-01-10 16:08 ` Vasant Hegde
2023-01-10 16:12 ` Vasant Hegde
2023-01-06 14:14 ` Jason Gunthorpe
2023-01-07 2:44 ` Baolu Lu
2023-01-09 13:43 ` Jason Gunthorpe
2023-01-10 5:28 ` Baolu Lu
2023-01-10 5:48 ` Baolu Lu
2023-01-10 8:06 ` Matt Fagnani
[not found] ` <bb3d5d1a-c222-9270-60fa-7d0b74bebd1a@linux.intel.com>
2023-01-10 22:12 ` Matt Fagnani
2023-01-10 13:25 ` Jason Gunthorpe
2023-01-10 13:45 ` Christian König
2023-01-10 13:51 ` Jason Gunthorpe
2023-01-10 13:56 ` Christian König
2023-01-10 20:51 ` Matt Fagnani
2023-01-11 8:35 ` Christian König
2023-01-10 15:05 ` Felix Kuehling
2023-01-10 15:19 ` Jason Gunthorpe
2023-01-10 15:21 ` Felix Kuehling
2023-01-11 3:16 ` Baolu Lu
2023-01-11 13:08 ` Jason Gunthorpe
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=6b5baa30-c218-0845-d6c2-32ac21ed6a6d@linux.intel.com \
--to=baolu.lu@linux.intel.com \
--cc=bhelgaas@google.com \
--cc=iommu@lists.linux.dev \
--cc=jroedel@suse.de \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=matt.fagnani@bell.net \
--cc=regressions@leemhuis.info \
--cc=regressions@lists.linux.dev \
--cc=vasant.hegde@amd.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).