Re: [Xen-devel] BUG: bad page map under Xen

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 21.10.13 at 16:18, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
> On Mon, Oct 21, 2013 at 04:06:07PM +0200, Lukas Hejtmanek wrote:
>>         Region 2: Memory at 380fff000000 (64-bit, prefetchable) [size=8M]
>...
> --- a/arch/x86/xen/setup.c
> +++ b/arch/x86/xen/setup.c
> @@ -92,6 +92,9 @@ static void __init xen_add_extra_mem(u64 start, u64 size)
>  
>                 __set_phys_to_machine(pfn, INVALID_P2M_ENTRY);
>         }
> +       /* Anything past the balloon area is marked as identity. */
> +       for (pfn = xen_max_p2m_pfn; pfn < MAX_DOMAIN_PAGES; pfn++)
> +               __set_phys_to_machine(pfn, IDENTITY_FRAME(pfn));

Hardly - MAX_DOMAIN_PAGES derives from
CONFIG_XEN_MAX_DOMAIN_MEMORY, which in turn is unrelated
to where MMIO might be. Should you perhaps simply start from
an all 1:1 mapping, inserting the RAM translations as you find
them?

Jan


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel