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Re: [Qemu-devel] [V11 3/4] hw/core: provision for overriding emulated IO

From: Marcel Apfelbaum
Subject: Re: [Qemu-devel] [V11 3/4] hw/core: provision for overriding emulated IOMMU
Date: Tue, 24 May 2016 17:23:00 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0

On 05/24/2016 04:01 PM, Jan Kiszka wrote:
On 2016-05-24 13:49, Michael S. Tsirkin wrote:
On Sun, May 22, 2016 at 01:21:53PM +0300, David Kiarie wrote:
Added an enum, subject to review, to machine properties which
it used to override iommu emulated from Intel to AMD.

Signed-off-by: David Kiarie <address@hidden>

  "enable iommu with -device"
seems like a better alternative.

If that works for both IOMMUs, it would be preferred. But the last time
I checked (granted: long ago), there were internal ordering issues
preventing this.

It will work for both. The reason is we delay the bus_master_region creation
to machine_done.


Bonus of moving IOMMU machine options over: They are getting more and
more, and many are now very IOMMU-specific (like the CM control for Intel).


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