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[Qemu-devel] Hotplug vs. multifunction regression


From: Nigel Kukard
Subject: [Qemu-devel] Hotplug vs. multifunction regression
Date: Sun, 16 Feb 2014 15:57:25 +0000

Hi guys,

Starting from the patch series in 9f117d41 the below error is
observed... (reverting to the patch right before it works fine a1483f88)

Here is the error:
qemu-system-x86_64: hw/pci/pcie.c:240: pcie_cap_slot_hotplug_common:
Assertion `((pci_dev->devfn) & 0x07) == 0' failed.

Here is the command that generated it...

CMDLINE: $VAR1 = [
          'qemu-system-x86_64',
          '-m',
          '8G',
          '-machine',
          'q35',
          '-cpu',
          'qemu64',
          '-smp',
          '4,sockets=1,cores=4,threads=1',
          '-enable-kvm',
          '-device',
         
'ioh3420,bus=pcie.0,addr=1c.0,multifunction=on,port=1,chassis=1,id=root.1',
          '-device',
         
'vfio-pci,host=03:00.0,bus=root.1,addr=0.0,multifunction=on,x-vga=on',
          '-device',
          'vfio-pci,host=03:00.1,bus=root.1,addr=0.1',
          '-device',
          'ide-drive,drive=sata-disk0,bus=ide.0',
          '-drive',
         
'file=510-drive_sda.qcow2,id=sata-disk0,format=qcow2,cache=writeback,if=none',
          '-vga',
          'none',
          '-nographic',
          '-boot',
          'menu=on',
        ];

It seems the hotplug interface doesn't know how to handle multifunction
devices.

-N



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