From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Cooper <andrew.cooper3@citrix.com>
Subject: Re: [PATCH v2 0/2] Support of RO MMCFG access for
	PVH/HVMlite dom0s
Date: Fri, 18 Dec 2015 13:02:12 +0000
Message-ID: <567403D4.9070708@citrix.com>
References: <1450383771-3636-1-git-send-email-boris.ostrovsky@oracle.com>
	<5673E9F202000078000C10EC@prv-mh.provo.novell.com>
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To: Jan Beulich <JBeulich@suse.com>, Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: keir@xen.org, xen-devel@lists.xen.org
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On 18/12/15 10:11, Jan Beulich wrote:
>>>> On 17.12.15 at 21:22, <boris.ostrovsky@oracle.com> wrote:
>> * Left non-MMCFG RO accesses unhandled (we havent't encountered those accesses
>>   yet with PVH dom0 and it's probably better to fault on them and investigate
>>   whether they are guest's issues).
> I seriously question this being a good approach,

I concur.  All accesses should be terminated somehow, even if this is
the hypervisor dropping writes and completing reads with ~0's.

This is the expected behaviour from the x86 architecture.

~Andrew