From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mukesh Rathor <mukesh.rathor@oracle.com>
Subject: [Ques]:xen_ident_map_ISA ant it's mfns...
Date: Fri, 20 Jan 2012 17:29:32 -0800
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Hi,

I am bit confused about the do_update_va_mapping call that dom0 makes in
xen_ident_map_ISA() to map ffff8800000a0000 to mfn a0. The mfn belongs
to DOMID_IO. Before the mfn is mapped, the l1 entry is not empty:

0000000139d08500:  00100001380a0027

After the mapping:

0000000139d08500:  00100000000a0467  as expected.

However, the mfn 1380a0 still seems to belong to dom0. Shouldn't that
have been returned back to the xen heap? 

thanks,
Mukesh