Re: [Xen-devel] kmap_atomic issue with SLES11SP1 32bit XEN driver code

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 15.12.11 at 01:47, dbrace <dab@xxxxxx> wrote:
>> >... without knowing where you got physical_address from it's impossible
>>>to tell whether your problem is that under Xen physical and machine
>>>(sometimes called "bus") addresses being distinct (end hence you're
> ??possibly lacking a translation between the two).
> 
> 
> Is there a way to tell from the address is this is happening?

Not really - these are distinct address spaces, and hence generally
any address can be valid in both. Seeing the initial memory map(s)
one may be able to disambiguate a few regions, but that's only
those where the machine memory really represents MMIO of some
sort.

Jan


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