Re: 2.6.25-rc1 xen pvops regression

Jeremy Fitzhardinge
2008-02-26T20:09:12Z

Mark McLoughlin wrote:
>> @@ -371,6 +372,9 @@ void __init dmi_scan_machine(void)
>> }
>> }
>> else {
>> + if (e820_all_mapped(0xF0000, 0xF0000+0x10000, E820_RAM))
>> + goto out;
>>
>
> One issue with using the e820 map for this is that a Xen Dom0 will also
> have this region marked as RAM in the e820 map, but will set up a fixmap
> for it, allowing dmi_scan_machine() to map the region.
>

Would it be easier to just fake up a mapping so that window points to
the real dmi area, and mark E820 accordingly?

J