Re: [patch 06/26] Xen-paravirt_ops: paravirt_ops: allocate a fixmap slot

Ingo Molnar
2007-02-27T10:18:57Z

* Jeremy Fitzhardinge <jeremy@goop.org> wrote:

> Allocate a fixmap slot for use by a paravirt_ops implementation. Xen
> uses this to map the hypervisor's shared info page, which doesn't have
> a pseudo-physical page number, and therefore can't be mapped
> ordinarily.

why not vmalloc it on the guest side? fixmaps are bad for this purpose
for a general paravirt implementation, it limits the size of the shared
info page, etc.

Ingo