Re: [Xen-devel] [PATCH v2] x86/hvmloader: round up memory BAR size to 4K

[Jan Beulich <jbeulich@xxxxxxxx>]

On 22.01.2020 11:51, Roger Pau Monné wrote:
> On Wed, Jan 22, 2020 at 11:27:24AM +0100, Jan Beulich wrote:
>> On 21.01.2020 17:57, Roger Pau Monné wrote:
>>> The PCI spec actually recommends memory BARs to be at least of page
>>> size, but that's not a strict requirement. I would hope there aren't
>>> that many devices with memory BARs smaller than a page.
>>
>> I've simply gone and grep-ed all the stored lspci output I have
>> for some of the test systems I have here:
>>
>> 0/12
>> 3/31 (all 4k-aligned)
>> 6/13 (all 4k-aligned)
>> 3/12
>> 6/19 (all 4k-aligned)
>> 3/7 (all 4k-aligned)
> 
> What does X/Y at the beginning of the line stand for?

<number-of-less-than-4k-BARs> / <total-number-of-BARs>

Jan

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