On 27 Feb 2006, at 13:34, Li, Xin B wrote:
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?
Thanks
The unmap is a must. After unmap the mapping is put in a per-vcpu
lookup table to allow fast reuse. When it is evicted from that table
then it is freed.
-- Keir
4 messages in com.xensource.lists.xen-devel[Xen-devel] Re: Will map_domain_page ...