On 10/05/16 15:57, Jan Beulich wrote:
>>>> On 10.05.16 at 15:39, <boris.ostrov...@oracle.com> wrote:
>> I didn't finish unwrapping the stack yesterday. Here it is:
>>
>> setup_arch -> dmi_scan_machine -> dmi_walk_early -> early_ioremap
>
> Ah, that makes sense. Yet why would early_ioremap() involve an
> M2P lookup? As said, MMIO addresses shouldn't be subject to such
> lookups.
early_ioremap()->
__early_ioremap()->
__early_set_fixmap()->
set_pte()->
xen_set_pte_init()->
mask_rw_pte()->
pte_pfn()->
pte_val()->
xen_pte_val()->
pte_mfn_to_pfn()
Juergen
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