Re: [Xen-devel] [PATCH PV_OPS PCIFRONT]

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

> That is it for right now. The driver works with INTx and MSI cards. I've 
> tested
> with USB and network (Broadcom) succesfully. There is still some more work to 
> do:
>  - MSI disable is not yet in,
>  - no MSI-X enable/disable functionality.
and:
 - If 4GB or more are allocated to the domain, you get this:

PCI: Warning: Cannot find a gap in the 32bit address range
PCI: Unassigned devices with 32bit resource registers may break!

   and the device shows up as disabled and is not usuable.

 - No support yet for 'reassign_device' which page aligns the BARs
   on PCI devices.

 - Haven't tested FLR or PCI AER.
 - Saw this once:

WARNING: at drivers/pci/msi.c:602 pci_enable_msi_block+0xcd/0x339()
.. snip ..
Call Trace:
 [<ffffffff8107ed59>] warn_slowpath_common+0xc9/0x10c
 [<ffffffff8107edcc>] warn_slowpath_null+0x30/0x4d
 [<ffffffff81362cec>] pci_enable_msi_block+0xcd/0x339
 [<ffffffff814006ec>] ? pciback_do_op+0x0/0x1b4
 [<ffffffff8140469e>] pciback_enable_msi+0x3e/0xb0
 [<ffffffff814007b9>] pciback_do_op+0xcd/0x1b4
..snip..

But besides that it works :-)

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