Re: [Xen-devel] alloc_vm_area() calling vmalloc_sync_all()

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

Yes, the virtual address returned gets passed to e.g.,
GNTTABOP_map_grant_ref, so the area must be mapped in the current address
space immediately. It can't be demand faulted.

 -- Keir


On 19/11/07 09:39, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote:

> Is there a specific reason for this? Other VM area functions don't do this
> pro-actively, and native only needs this for allowing NMI and MCE notifiers
> access to vmalloc space (which is being taken care of when registering
> such handlers).
> 
> Thanks, Jan
> 
> 
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