Re: RFC: AMD support for paging

["Andres Lagar-Cavilla" <andres@lagarcavilla.org>]

> On Tue, Feb 14, Andres Lagar-Cavilla wrote:
>
>> > On Tue, Feb 14, Andres Lagar-Cavilla wrote:
>> >
>> >> Finally, the triple fault.
>> >
>> > "Me too!"
>> > Thats how far I got as well in my attempt.
>>
>> Hey, awesome you're trying this out so quickly :)
>
> I meant my attempt a few weeks ago.
>
>> If you have a couple cycles...
>
> Does your pager do anything? I just get this:
>
> xc: detail: xenpaging init
> xc: detail: watching '/local/domain/1/memory/target-tot_pages'
> xc: detail: max_pages = 263168
> xc: detail: starting /usr/lib/xen/bin/xenpaging for domain_id 1 with
> pagefile /dev/shm/pagefile-sles11sp2_full_xenpaging
> xc: detail: confirming startup in /local/domain/1/xenpaging/state
> xc: detail: Got event from xenstore
> xc: detail: path '@releaseDomain' token '1'
> xc: detail: Got event from evtchn
> xc: detail: Got event from xenstore
> xc: detail: path '/local/domain/1/memory/target-tot_pages' token ''
> xc: detail: new target_tot_pages 59904
> xc: detail: Got event from Xen
> xc: detail: Need to evict 202213 pages to reach 59904 target_tot_pages
> xc: error: Error mapping page 20201 (22 = Invalid argument): Internal
> error

Those are the kinds of errors I was getting until I finished my patch.
Basically, the p2m gets confused and returns p2m_mmio_dm as the type for
anything it doesn't understand. If you end up giving my patch a spin, let
me know if it gets you past that hump.

Andres

> xc: debug: hypercall buffer: total allocations:9 total releases:9
> xc: debug: hypercall buffer: current allocations:0 maximum allocations:2
> xc: debug: hypercall buffer: cache current size:2
> xc: debug: hypercall buffer: cache hits:7 misses:2 toobig:0
>
>
> Olaf
>