Re: accessing domain's page contents from hypervisor

[Sai Suresh <saisuresh@gmail.com>]

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Actually, I was passing the machine address in that variable :) I was using 
the code to debug, and didnt bother to change the variable name. Its type is 
unsigned long. It seems to contain a valid machine address, as it fell in 
the range between alloc_start and alloc_end that is allocated to a domain.



On 5/12/05, Ian Pratt <m+Ian.Pratt@cl.cam.ac.uk> wrote:
> 
> 
> > I was trying to read the contents of a domain's L1 page table
> > page from hypervisor.
> > The system reboots whenever I dereference the contents of a page.
> > I use the map_domain_mem and unmap_domain_mem functions
> > before and after I dereference it.
> > Any suggestions on the possible reasons would be really helpful.
> 
> map_domain_mem takes a machine address
> 
> Ian
> 
> > /*----------------------code---start------------------------------*/
> > unsigned long * pg;
> > int i;
> > list_for_each_entry(page, &d->page_list, list)
> > {
> > if ( (page->u.inuse.type_info & PGT_type_mask) ==
> > PGT_l1_page_table){
> >
> > pg = (unsigned long *) map_domain_mem(domain_id);
> > for(i=0; i<1024; i++) {
> > if( ( pg != NULL) && (pg[i] & 0x00000041) )
> > count++;
> > }
> > }
> > unmap_domain_mem(pg);
> > }
> > /*----------------------code---end------------------------------*/
> >
> >
>

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