[Xen-ia64-devel] [PATCH] Allocate frame table/mpt table at mfn=0

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

Allocate frame table/mpt table at mfn=0 even when memory isn't assigned at
mfn=0 as work around of transate_domain_pte().
It returns mfn=0 when the machine page isn't present as a work around
for memory mapped I/O where no device is assigned.
Xen might access page_info of mfn=0, so it must be gurantted
that it exists. Otherwise xen panics with tlb miss fault in xen virtual
address area.
Once transate_domain_pte() is fixed correctly, this will be removed.


-- 
yamahata

Attachment: 12672_6747f2c05836_allocate_table_at_mfn_0.patch
Description: Text document

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