WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] question about domU memory mapping

Thanks for your reply!

But I got the virtual address as d0848480 and then got the
corresponding machine address by using virt_to_machine, Is this the right
way to do that?

Is there any restriction on the memeory that is remappable? I mean, can
some memory in DomU un-remappable?

Thanks,

-x


On Wed, 27 Jul 2005, Keir Fraser wrote:

>
> On 27 Jul 2005, at 07:37, Xin Zhao wrote:
>
> > I am trying to map some memory page in DomU kernel space.
> > Specifically, I
> > am trying to map the in-kernel module structure of sunrpc whose
> > address is
> > d0848480 and machine address is 00000480. The aligned page becomes zero
> > (that's weird, I don't know whether that's possible). When I tried to
> > map
> > it into Dom0, I got an error number -14 which means bad address.
> >
> > So my question is:
> > 1. Is this kind memory remappable?
> > 2. If so, what's wrong with this? or what's the right way to do that?
>
> The machine address of that structure is certainly not 0x480. Xen would
> never allocate a page below 1MB to a domain.
>
>   -- Keir
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
>

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel