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Re: [Xen-devel] Problem re-alloc'ing after freeing domheap pages


  • To: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>, "Xen-Devel (E-mail)" <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
  • Date: Thu, 13 Nov 2008 23:39:50 +0000
  • Cc:
  • Delivery-date: Thu, 13 Nov 2008 15:40:09 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AclF6R6bXTjDwLHcEd2xqwAWy6hiGQ==
  • Thread-topic: [Xen-devel] Problem re-alloc'ing after freeing domheap pages

On 13/11/08 22:32, "Dan Magenheimer" <dan.magenheimer@xxxxxxxxxx> wrote:

> This fails for all alloc's in the second while loop.
> 
> Is there something else I need to do when I allocate
> or free a non-anonymous domheap page?  (Note this seems
> to work fine for anonymous domheap pages.)
> 
> Do I maybe need to also do list_del(&p->list)?  Or
> get_page()/put_page() or something like that?

What you describe should work as-is. If domain d were dying then the freed
pages would end up on the scrub list rather than the free list, but that's
presumably not the case here.

 -- Keir



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