On Wed, Sep 23, 2020 at 9:19 AM Raj, Ashok <ashok....@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 ? Thanks, Rajat > > Will nudge the hw folks to hunt that down :-(. > > Cheers, > Ashok _______________________________________________ iommu mailing list email@example.com https://lists.linuxfoundation.org/mailman/listinfo/iommu