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

[George Dunlap <george.dunlap@xxxxxxxxxx>]

On 11/23/2017 11:55 AM, Olaf Hering wrote:
> On Thu, Nov 23, Olaf Hering wrote:
> 
>> On Thu, Nov 23, Jan Beulich wrote:
>>> Olaf, are you still playing with it every now and then?
>> No, I have not tried it since I last touched it.
> 
> I just tried it, and it failed:
> 
> root@stein-schneider:~ # /usr/lib/xen/bin/xenpaging -d 7 -f /dev/shm/p -v
> xc: detail: xenpaging init
> xc: detail: watching '/local/domain/7/memory/target-tot_pages'
> xc: detail: Failed allocation for dom 7: 1 extents of order 0
> xc: error: Failed to populate ring gfn
>  (16 = Device or resource busy): Internal error

That looks like just a memory allocation.  Do you use autoballooning
dom0?  Maybe try ballooning dom0 down first?

 -George

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