Xen devel - Mar 2013 - the code about guest OS registering a page with Xen

hi, all,

I read this sentence.
Guest OSes are responsible for allocating and initializing PTs for
processes (restricted to read only access)
allocates and initialize a page and register it with Xen to serve as the
new PT

Can any one teach me where is the code about registering a page with Xen in
Xen''s code?
I appreciate your help!

Thanks.
Wait


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At 17:25 -0400 on 18 Mar (1363627541), ?????? wrote:
> hi, all,
> 
> I read this sentence.
> Guest OSes are responsible for allocating and initializing PTs for
> processes (restricted to read only access)
> allocates and initialize a page and register it with Xen to serve as the
> new PT
> 
> Can any one teach me where is the code about registering a page with Xen in
> Xen''s code?
The API is in xen/include/public/xen.h, in particular HYPERVISOR_mmu_update,
HYPERVISOR_mmuext_op and HYPERVISOR_update_va_mapping.

For examples of how to use it, grep your favourite Xen-aware kernel''s
sources, or have a look at extras/mini-os/arch/x86/mm.c

Tim.