On Mon, Nov 14, 2016 at 11:16:51AM -0500, Don Dutile wrote: > On 11/14/2016 06:56 AM, Johannes Thumshirn wrote: > > On Wed, Nov 09, 2016 at 11:11:40AM -0600, Bjorn Helgaas wrote: > > > Hi Johannes, > > > > > > On Wed, Nov 02, 2016 at 04:35:52PM -0600, Johannes Thumshirn wrote: > > > > The Read Completion Boundary (RCB) bit must only be set on a device or > > > > endpoint if it is set on the root complex. > > > > > > > > Certain BIOSes erroneously set the RCB Bit in their ACPI _HPX Tables > > > > even if it is not set on the root port. This is a violation to the PCIe > > > > Specification and is known to bring some Mellanox Connect-X 3 HCAs into > > > > a state where they can't map their firmware and go into error recovery. > > > > > > > > BIOS Information > > > > Vendor: IBM > > > > Version: -[A8E120CUS-1.30]- > > > > Release Date: 08/22/2016 > > > > > > This seems like a pretty serious problem (sounds like maybe the HCA is > > > completely useless?) > > > > Correct. > > > > > > > > Can you point us at a bugzilla or other problem report? It's nice to > > > have details of what this looks like to a user, so people who trip > > > over this problem have a little more chance of finding the solution. > > > > As we already said, our bugzilla entry for this is not accessible from the > > outside, but I know Red Hat does have a bugzilla entry for the same issue as > > well. Maybe this is reachable from the outside (adding Don for this, as I know > > he has worked on this problem as well). > > > RHEL bz's are not accessible from the outside. > I suggest capturing the content of the RH bz issue and creating a k.o. bz > with the information. I've created https://bugzilla.kernel.org/show_bug.cgi?id=187781 to track this on b.k.o. Feel free to add any information you have. @Bjorn anything else I can provide in order to get the fix applied? Byte, Johannes -- Johannes Thumshirn Storage jthumshirn@xxxxxxx +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
