Re: [Xen-devel] ATI Radeon 9600SE and intel-agp, again

[Jacob Gorm Hansen <jacobg@xxxxxxx>]

Ian Pratt wrote:
> > intel-agp refuses to load because the call to 
> > MMU_SET_FOREIGNDOM (trying 
> > to give the I/O pages to dom_io) fails, because the pages are 
> > owned by dom0 instead of by dom_io. If I remove the ownership check in
>
> > get_page() 
> > (in Xen) I can load the module, but dom0 will crash when X 
> > tries to map 
> > AGP memory.
>
> Have you tried since the following checkin:
> 48 hours        kaf24   1.1711  Fix ioremap() for local RAM pages
Yes, this is this is in the latest code from bkbits xeno-unstable.

arch/xen/i386/ioremap.c tries to call direct_remap_area_pages like this 
(the printk is mine)
    printk("trying to remap addr %p phys %p size %d to DOM_IO\n",addr, 
phys_addr, size);
    if (direct_remap_area_pages(&init_mm, (unsigned long) addr, phys_addr,
                    size, __pgprot(_PAGE_PRESENT | _PAGE_RW |
                           _PAGE_DIRTY | _PAGE_ACCESSED
                           | flags), DOMID_IO)) {

the printk says:
"trying to remap addr d0900000 phys 3ff00000 size 262144 to DOM_IO"

And the call fails in Xen who claims that dom0 and not dom_io owns these 
pages.
Jacob


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