> -Original Message-
> From: Jan Beulich
> Sent: 29 January 2020 08:22
> To: Durrant, Paul
> Cc: xen-devel@lists.xenproject.org; Andrew Cooper
> ; George Dunlap ;
> Ian Jackson ; Julien Grall ;
> Konrad Rzeszutek Wilk ; Stefano Stabellini
> ; Wei Liu ; Volodymyr Babchuk
> ; Roger Pau
On 28.01.2020 18:01, Durrant, Paul wrote:
>> From: Jan Beulich
>> Sent: 28 January 2020 15:23
>>
>> On 24.01.2020 16:31, Paul Durrant wrote:
>>> Currently it is unsafe to assign a domheap page allocated with
>>> MEMF_no_refcount to a domain because the domain't 'tot_pages' will not
>>> be
> -Original Message-
[snip]
> > > @@ -2331,11 +2331,20 @@ struct page_info *alloc_domheap_pages(
> > >memflags, d)) == NULL)) )
> > > return NULL;
> > >
> > > -if ( d && !(memflags & MEMF_no_owner) &&
> > > - assign_pages(d, pg,
> -Original Message-
> From: Jan Beulich
> Sent: 28 January 2020 15:23
> To: Durrant, Paul
> Cc: xen-devel@lists.xenproject.org; Andrew Cooper
> ; George Dunlap ;
> Ian Jackson ; Julien Grall ;
> Konrad Rzeszutek Wilk ; Stefano Stabellini
> ; Wei Liu ; Volodymyr Babchuk
> ; Roger Pau
On 24.01.2020 16:31, Paul Durrant wrote:
> Currently it is unsafe to assign a domheap page allocated with
> MEMF_no_refcount to a domain because the domain't 'tot_pages' will not
> be incremented, but will be decrement when the page is freed (since
> free_domheap_pages() has no way of telling that
Currently it is unsafe to assign a domheap page allocated with
MEMF_no_refcount to a domain because the domain't 'tot_pages' will not
be incremented, but will be decrement when the page is freed (since
free_domheap_pages() has no way of telling that the increment was skipped).
This patch
