BTW.
The kernel I'm using has MSI-x support enabled and this same thing
also occurs on the default FC11 2.6.29.4-167 kernel.
Below is a partial dump of 'lspci -vv'.
I only pasted the output from the virtio networking device and from
the virtio block device.
You can notice that the block device doesn't have the MSI-x capability.
Is there something I can tell QEmu to add the MSI-x capability to the
virtio block device?
00:03.0 Ethernet controller: Qumranet, Inc. Virtio network device
Subsystem: Qumranet, Inc. Device 0001
Physical Slot: 3
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at c040 [size=32]
Region 1: Memory at f2001000 (32-bit, non-prefetchable)
[size=4K]
Capabilities: [40] MSI-X: Enable+ Mask- TabSize=3
Vector table: BAR=1 offset=00000000
PBA: BAR=1 offset=00000800
Kernel driver in use: virtio-pci
Kernel modules: virtio_pci
00:05.0 Mass storage controller: Qumranet, Inc. Virtio block device
Subsystem: Qumranet, Inc. Device 0002
Physical Slot: 5
Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 10
Region 0: I/O ports at c800 [size=1K]
Kernel driver in use: virtio-pci
Kernel modules: virtio_pci
Thanks,
Saul
On Wed, Oct 28, 2009 at 5:04 PM, Saul Tamari <[email protected]> wrote:
> yep!
>
> What do I have to do to turn on MSI-x?
> Make this PCI capability in QEMU's virtio??
>
>
> Thanks,
> Saul
>
>
> On Wed, Oct 28, 2009 at 4:59 PM, Michael Tokarev <[email protected]> wrote:
> [snip]
>>
>> So the next question is how to use MSI-x.. ;)
>>
>> Thanks!
>>
>> /mjt
>>
>
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