Re: [Xen-devel] [PATCH 13/16] SUPPORT.md: Add secondary memory management features

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 23/11/17 12:45, Olaf Hering wrote:
> On Thu, Nov 23, Andrew Cooper wrote:
>
>> Its not that.  This failure comes from the ring living inside the p2m,
>> and has already been found with introspection.
> In my case it was just a wrong domid. Now I use 'xl domid domU' and
> xenpaging does something. It seems paging out and in works still to some
> degree.  But it still/again needs lots of testing and fixing.
>
> I get errors like this, and xl dmesg has also errors:
>
> ...
> xc: detail: populate_page < gfn 10100 pageslot 127
> xc: detail: Need to resume 200 pages to reach 131328 target_tot_pages
> xc: detail: Got event from evtchn
> xc: detail: populate_page < gfn 10101 pageslot 128
> xenforeignmemory: error: mmap failedxc: : Invalid argument
> detail: populate_page < gfn 10102 pageslot 129
> xc: detail: populate_page < gfn 10103 pageslot 130
> xc: detail: populate_page < gfn 10104 pageslot 131
> ...
>
> ...
> (XEN) vm_event.c:289:d0v0 d2v0 was not paused.
> (XEN) vm_event.c:289:d0v0 d2v0 was not paused.
> (XEN) vm_event.c:289:d0v2 d2v2 was not paused.
> ...

Hmm ok.  Either way, I think this demonstrates that the feature is not
of "Tech Preview" quality.

~Andrew

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