From: Anthony Liguori <anthony@codemonkey.ws>
To: Avi Kivity <avi@redhat.com>
Cc: "Han, Weidong" <weidong.han@intel.com>,
kvm@vger.kernel.org, Amit Shah <amit.shah@redhat.com>,
"Kay, Allen M" <allen.m.kay@intel.com>,
benami@il.ibm.com
Subject: Re: [PATCH] VT-d: Fix iommu map page for mmio pages
Date: Thu, 25 Sep 2008 10:04:20 -0500 [thread overview]
Message-ID: <48DBA874.4010307@codemonkey.ws> (raw)
In-Reply-To: <48DBA40A.7030508@redhat.com>
Avi Kivity wrote:
> Han, Weidong wrote:
>> Is it possible DMA into an mmio page?
>
> I don't see why not.
Yeah, it is. I mentioned this a long time ago. We definitely need to
map mmio pages into the VT-d mapping.
Regards,
Anthony Liguori
>> If yes, we also need to map mmio
>> pages, and is_mmio_pfn() check is not neccessary here.
>>
>
> So we get simpler code as well.
>
next prev parent reply other threads:[~2008-09-25 15:05 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-19 7:15 [PATCH] VT-d: Fix iommu map page for mmio pages Han, Weidong
2008-09-25 10:27 ` Avi Kivity
2008-09-25 13:44 ` Han, Weidong
2008-09-25 13:58 ` Avi Kivity
2008-09-25 14:07 ` Han, Weidong
2008-09-25 14:45 ` Avi Kivity
2008-09-25 15:04 ` Anthony Liguori [this message]
2008-09-25 15:19 ` Han, Weidong
2008-09-25 21:14 ` Muli Ben-Yehuda
2008-09-25 21:51 ` Anthony Liguori
2008-09-26 23:57 ` Muli Ben-Yehuda
2008-09-27 10:24 ` Avi Kivity
2008-09-28 6:07 ` Muli Ben-Yehuda
2008-09-28 8:45 ` Avi Kivity
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