Re: [Xen-devel] Issues with PCI-Passtrough (VT-d) in HVM with Xen 4.6

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 03.06.16 at 15:26, <JBeulich@xxxxxxxx> wrote:
>>>> On 03.06.16 at 14:02, <juwalter@xxxxxxxxx> wrote:
>>     or is this just some method the overwrite all registers with 
>> "ffffffff" first and then set the actual value?
>> 
>>    [914572] xbk: 06:00.0: write request 4 bytes at 0x10 = ffffffff
>>    [914574] xbk: 06:00.0: read 4 bytes at 0x10
>>    [914582] xbk: 06:00.0: read 4 bytes at 0x10 = f7a00000
>>    [914591] xbk: 06:00.0: read 4 bytes at 0x10
>>    [914599] xbk: 06:00.0: read 4 bytes at 0x10 = 10000      <---- fail
> 
> That's an unexpected value, indeed (but seems to match up with
> the source, so there's definitely something wrong here - this
> presumably ought to be 0xffff0000, meaning the size of that
> region is 64k).

Mind trying out the attached patch?

Jan

Attachment: xen-pciback-BAR-lengths.patch
Description: Text document

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