Re: [Xen-devel] Re: [PATCH] make ballooning up to maxmem work

[Keir Fraser <keir@xxxxxxxxxxxxx>]

On 22/11/06 10:40, "Glauber de Oliveira Costa" <gcosta@xxxxxxxxxx> wrote:

>>      case XENMEM_current_reservation:
>>      case XENMEM_maximum_reservation:
>> +    case XENMEM_maximum_memory:
>>          if ( copy_from_guest(&domid, arg, 1) )
>>              return -EFAULT;
> 
> This still makes use of d->max_pages in return. Isn't it supposed to
> change in the future too? IIRC, according to Keir, max_pages will track
> the _current_ number of pages, differing from tot_pages only in a brief
> timeframe in which you balloon, but tot_pages was not yet updated.

This adds a level of indirection at least, but really we may as well
implement the XENMEM_memory_map hypercall. Then there is no guest
modification required.

 -- Keir


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel