Re: [Xen-devel] [PATCH][ioemu] fix PCI bar mapping

[Simon Horman <horms@xxxxxxxxxxxx>]

On Tue, May 05, 2009 at 08:37:56PM +0800, Cui, Dexuan wrote:
> dbb8aafa702b8b4f5568e08641d98471fd04e0f8 has a bug:
> The virtual CMD value we get from reg_entry->data is not the proper value 
> because reg_entry->data only holds the emulated bits and the 
> PCI_COMMAND_IO/PCI_COMMAND_MEMORY bits are not in it.
> Instead, we can use pt_pci_read_config(&ptdev->dev, PCI_COMMAND, 2) to get 
> the proper value. 
> 
> We should only update the mapping of the related BAR, NOT the mappings of ALL 
> BARs.
> 
> In pt_exp_rom_bar_reg_write(), we should also update the mapping. And for 
> PCI_ROM_SLOT, when the PCI_ROM_ADDRESS_ENABLE bit is 0, we should not have 
> the mapping.
> 
> Signed-off-by: Dexuan Cui <dexuan.cui@xxxxxxxxx>

Hi,

this patch also seems to resolve the problem that I was seeing
where Intel NICs were not usable.

Tested-by: Simon Horman <horms@xxxxxxxxxxxx>

-- 
Simon Horman
  VA Linux Systems Japan K.K. Satellite Lab in Sydney, Australia
  H: www.vergenet.net/~horms/            W: www.valinux.co.jp/en


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