On Tue, Aug 12, 2014 at 02:59:49PM +0300, Amir Vadai wrote: >On 8/12/2014 2:48 PM, Gavin Shan wrote: Cc Bjorn so that he can pick it up if possible. >> The VFIO driver is routing LSI interrupts by capturing, masking, >> and then delivering. When passing though Mellanox adapters from >> host to guest, interrupt storm was reported from host and guest. >> That's because we can't mask the LSI interrupt with help of PCI >> command register. >> >> # lspci | grep Mellanox >> 0001:05:00.0 Ethernet controller: Mellanox Technologies MT27500 \ >> Family [ConnectX-3] >> 0005:01:00.0 Ethernet controller: Mellanox Technologies MT26448 \ >> [ConnectX EN 10GigE, PCIe 2.0 5GT/s] (rev b0) >> >> It's confirmed by Amir Vadai that all Mellanox devices have same >> problem. The patch marks broken INTx masking for all Mellanox >> adapters. >> >> Cc: Amir Vadai <amirv@xxxxxxxxxxxx> >> Suggested-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> >> Signed-off-by: Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx> >> --- >> v3: Mark broken INTx masking for all Mellanox adapters >> --- >> drivers/pci/quirks.c | 2 ++ >> 1 file changed, 2 insertions(+) >> > >Acked-By: Amir Vadai <amirv@xxxxxxxxxxxx> > Thanks, Gavin >-- >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 > -- 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
