Tuesday, August 5, 2014, 11:31:08 AM, you wrote: > On 05/08/14 09:44, Sander Eikelenboom wrote: >> >> Monday, August 4, 2014, 8:43:18 PM, you wrote: >> >>> On Fri, Aug 01, 2014 at 04:30:05PM +0100, David Vrabel wrote: >>>> On 14/07/14 17:18, Konrad Rzeszutek Wilk wrote: >>>>> Greg: goto GHK >>>>> >>>>> This is v5 version of patches to fix some issues in Xen PCIback. >>>> >>>> Applied to devel/for-linus-3.17. >> >>> Thank you. >>>> >>>> I dropped the stable Cc for #2 pending a final decision on whether it >>>> really is a stable candidate. >> >>> OK. >>>> >>>> David >> >> Hi Konrad / David, >> >> This series still lacks a resolution on the sysfs /do_flr /reset, >> as a result the pci devices are not reset after shutdown of a guest. >> (no more pciback 0000:xx:xx.x: restoring config space at offset xxx) >> >> So this series now introduces a regression to 3.16, which causes devices to >> malfunction >> after a guest reboot or after assigning the devices to another guest.
> I don't follow what you're saying. The lack of a device reset for PCI > devices with no FLR method isn't a regression as this has never worked. > Can you explain in more detail what the regression is and which patch > caused it? I haven't bisected it to a specific patch in this series, but this patch series (when pulled on top of 3.16) cause the following: - Do a system start and HVM guest start - HVM guest with pci passthrough, devices work fine - shutdown the HVM guest - "pciback 0000:xx:xx.x: restoring config space at offset xxx" messages do not appear anymore when shutting down the HVM guest (as they do with vanilla 3.16) - Starting the HVM guest again with the same devices passed through. - Devices malfunction (for example a USB host controller will fail a simple "lsusb" - And this all works fine on vanilla 3.16. >> Apart from that .. i can't resist to remind the other issue with removing pci >> devices passed through to HVM guests related to the signaling via xenstore, >> described in: >> >> http://lists.xen.org/archives/html/xen-devel/2014-07/msg01875.html > I don't remember seeing you posting a patch...? > David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
