From: Takashi Iwai <tiwai@suse.de>
To: Jason Gunthorpe <jgg@nvidia.com>
Cc: Takashi Iwai <tiwai@suse.de>, Lu Baolu <baolu.lu@linux.intel.com>,
Joerg Roedel <jroedel@suse.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Robin Murphy <robin.murphy@arm.com>,
Eric Auger <eric.auger@redhat.com>,
regressions@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [REGRESSION 5.19.x] AMD HD-audio devices missing on 5.19
Date: Tue, 06 Sep 2022 17:52:34 +0200 [thread overview]
Message-ID: <87edwofqkd.wl-tiwai@suse.de> (raw)
In-Reply-To: <YxdqP9i0bEwUg4VJ@nvidia.com>
On Tue, 06 Sep 2022 17:41:51 +0200,
Jason Gunthorpe wrote:
>
> On Tue, Aug 23, 2022 at 05:28:24PM -0300, Jason Gunthorpe wrote:
> > On Tue, Aug 23, 2022 at 01:46:36PM +0200, Takashi Iwai wrote:
> > > It was tested now and confirmed that the call path is via AMDGPU, as
> > > expected:
> > > amdgpu_pci_probe ->
> > > amdgpu_driver_load_kms ->
> > > amdgpu_device_init ->
> > > amdgpu_amdkfd_device_init ->
> > > kgd2kfd_device_init ->
> > > kgd2kfd_resume_iommu ->
> > > kfd_iommu_resume ->
> > > amd_iommu_init_device ->
> > > iommu_attach_group ->
> > > __iommu_attach_group
> >
> > Oh, when you said sound intel I thought this was an Intel CPU..
> >
> > Yes, there is this hacky private path from the amdgpu to
> > the amd iommu driver that makes a mess of it here. We discussed it in
> > this thread:
> >
> > https://lore.kernel.org/linux-iommu/YgtuJQhY8SNlv9%2F6@8bytes.org/
> >
> > But nobody put it together that it would be a problem with this.
> >
> > Something like this, perhaps, but I didn't check if overriding the
> > type would cause other problems.
>
> Takashi, do we want to do this patch?
I really have no much preference regarding the fix for this
regression from my side. If you can work on it, it'd be greatly
appreciated.
thanks,
Takashi
next prev parent reply other threads:[~2022-09-06 16:25 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-22 14:12 [REGRESSION 5.19.x] AMD HD-audio devices missing on 5.19 Takashi Iwai
2022-08-23 1:00 ` Jason Gunthorpe
2022-08-23 6:06 ` Takashi Iwai
2022-08-23 11:46 ` Takashi Iwai
2022-08-23 20:28 ` Jason Gunthorpe
2022-08-23 21:01 ` Robin Murphy
2022-08-24 0:02 ` Jason Gunthorpe
2022-09-06 15:41 ` Jason Gunthorpe
2022-09-06 15:52 ` Takashi Iwai [this message]
2022-09-06 15:53 ` Jason Gunthorpe
2022-09-06 16:04 ` Takashi Iwai
2022-09-06 16:08 ` Jason Gunthorpe
2022-09-06 16:16 ` Takashi Iwai
2022-09-07 10:08 ` Takashi Iwai
2022-09-07 13:28 ` Takashi Iwai
2022-09-07 13:48 ` Jason Gunthorpe
2022-09-08 6:23 ` Takashi Iwai
2022-08-24 7:13 ` Thorsten Leemhuis
2022-09-19 15:23 ` [REGRESSION 5.19.x] AMD HD-audio devices missing on 5.19 #forregzbot Thorsten Leemhuis
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