From: "Raj, Ashok" <ashok.raj@intel.com>
To: Rajat Jain <rajatja@google.com>
Cc: Bjorn Helgaas <helgaas@kernel.org>,
linux-pci <linux-pci@vger.kernel.org>,
Kai-Heng Feng <kai.heng.feng@canonical.com>,
Joerg Roedel <jroedel@suse.de>,
Lalithambika Krishnakumar <lalithambika.krishnakumar@intel.com>,
Lu Baolu <baolu.lu@linux.intel.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Keith Busch <kbusch@kernel.org>, Jens Axboe <axboe@fb.com>,
Christoph Hellwig <hch@lst.de>, Sagi Grimberg <sagi@grimberg.me>,
linux-nvme@lists.infradead.org,
"open list:AMD IOMMU (AMD-VI)" <iommu@lists.linux-foundation.org>,
Ashok Raj <ashok.raj@intel.com>
Subject: Re: [bugzilla-daemon@bugzilla.kernel.org: [Bug 209149] New: "iommu/vt-d: Enable PCI ACS for platform opt in hint" makes NVMe config space not accessible after S3]
Date: Thu, 24 Sep 2020 13:03:34 -0700 [thread overview]
Message-ID: <20200924200334.GC86064@otc-nc-03> (raw)
In-Reply-To: <CACK8Z6HkPBXeRnzeK9TdBSkJOPx=Q775065RRqeaa3XWajuZQw@mail.gmail.com>
On Wed, Sep 23, 2020 at 12:45:11PM -0700, Rajat Jain wrote:
> On Wed, Sep 23, 2020 at 9:19 AM Raj, Ashok <ashok.raj@intel.com> wrote:
> >
> > Hi Bjorn
> >
> >
> > On Wed, Sep 23, 2020 at 11:03:27AM -0500, Bjorn Helgaas wrote:
> > > [+cc IOMMU and NVMe folks]
> > >
> > > Sorry, I forgot to forward this to linux-pci when it was first
> > > reported.
> > >
> > > Apparently this happens with v5.9-rc3, and may be related to
> > > 50310600ebda ("iommu/vt-d: Enable PCI ACS for platform opt in hint"),
> > > which appeared in v5.8-rc3.
> > >
> > > There are several dmesg logs and proposed patches in the bugzilla, but
> > > no analysis yet of what the problem is. From the first dmesg
> > > attachment (https://bugzilla.kernel.org/attachment.cgi?id=292327):
> >
> > We have been investigating this internally as well. It appears maybe the
> > specupdate for Cometlake is missing the errata documention. The offsets
> > were wrong in some of them, and if its the same issue its likely cause.
>
> Can you please also confirm if errata applies to Tigerlake ?
>
We confirmed ICL/TGL isn't affected.
next prev parent reply other threads:[~2020-09-24 20:03 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-23 16:03 [bugzilla-daemon@bugzilla.kernel.org: [Bug 209149] New: "iommu/vt-d: Enable PCI ACS for platform opt in hint" makes NVMe config space not accessible after S3] Bjorn Helgaas
2020-09-23 16:19 ` Raj, Ashok
2020-09-23 19:45 ` Rajat Jain
2020-09-24 20:03 ` Raj, Ashok [this message]
2020-09-23 16:31 ` Kai-Heng Feng
2020-09-24 18:09 ` Raj, Ashok
2020-09-24 19:39 ` Alex Williamson
2020-09-24 19:44 ` Raj, Ashok
2020-09-25 6:35 ` Kai-Heng Feng
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