Re: [Xen-devel] Where is hypercall_page?

[Daniel Stodden <stodden@xxxxxxxxxx>]

On Mon, 2008-07-07 at 17:43 +0900, Jun Koi wrote:
> Hi,
> 
> I am looking to see where "hypercall_page" is declared in Linux
> kernel. However, I only found the extern prototype of it in
> arch/i386/kernel/setup-xen.c:
> 
> extern char hypercall_page[PAGE_SIZE];
> 
> So I am wondering where this "hypercall_page" variable is actually
> declared. Any pointer?

Only the space is reserved by guests. Never forget to grep assembly
files as well.

Contents are built by Xen. Usually during domain build, or when
requested by an MSR. The latter is probabily for PV drivers in HVM
domains. See the traps.c files for reference.

Best,
Daniel

-- 
Daniel Stodden
LRR     -      Lehrstuhl fÃr Rechnertechnik und Rechnerorganisation
Institut fÃr Informatik der TU MÃnchen             D-85748 Garching
http://www.lrr.in.tum.de/~stodden         mailto:stodden@xxxxxxxxxx
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