[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-devel] RE: Will map_domain_page return NULL when fails on x86_32?

  • To: "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>
  • From: "Li, Xin B" <xin.b.li@xxxxxxxxx>
  • Date: Mon, 27 Feb 2006 21:34:48 +0800
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Mon, 27 Feb 2006 13:35:23 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcY7oGIjWgaQ2NKQQr2dNCyUtDdXJAAAe7mA
  • Thread-topic: Will map_domain_page return NULL when fails on x86_32?

>> Hi Keir, just a curious question, will map_domain_page 
>return NULL when
>> fails on x86_32? If not, why?
>> thanks
>I don't expect that it should ever fail. It's used for temporary 
>mappings (e.g., scope of a function) and so even though the mapping 
>space is finite, we shouldn't ever exhaust it.

So the unmap is not a must?
Can you explain the mechanism of garbage collection here?

>The map_domain_page_global() space is a different matter...
>  -- Keir

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.