From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jan Beulich" <JBeulich@suse.com>
Subject: Re: [PATCH RFC 2/2] AMD IOMMU: allow command line
 overrides for broken IVRS tables
Date: Tue, 27 Aug 2013 15:11:51 +0100
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References: <1831656044.20130722225004@eikelenboom.it>
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	<520D0CBF02000078000EC4FF@nat28.tlf.novell.com>
	<1182640844.20130816012228@eikelenboom.it>
	<33876223.20130816014116@eikelenboom.it>
	<520DEEFD02000078000EC76F@nat28.tlf.novell.com>
	<208201973.20130816094246@eikelenboom.it>
	<520DF8F302000078000EC7AD@nat28.tlf.novell.com>
	<1157392160.20130816104005@eikelenboom.it>
	<520E0AA002000078000EC82B@nat28.tlf.novell.com>
	<451541998.20130816124429@eikelenboom.it>
	<520E422602000078000EC94D@nat28.tlf.novell.com>
	<1834274604.20130823005128@eikelenboom.it>
	<521C78A602000078000EEA44@nat28.tlf.novell.com>
	<521C79F502000078000EEA56@nat28.tlf.novell.com>
	<759475415.20130827115236@eikelenboom.it>
	<835047997.20130827130902@eikelenboom.it>
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To: Sander Eikelenboom <linux@eikelenboom.it>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>, Keir Fraser <keir@xen.org>, Suravee Suthikulanit <suravee.suthikulpanit@amd.com>, xen-devel <xen-devel@lists.xen.org>
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>>> On 27.08.13 at 14:04, "Jan Beulich" <JBeulich@suse.com> wrote:
>>>> On 27.08.13 at 13:09, Sander Eikelenboom <linux@eikelenboom.it> wrote:
>>> Would the syntax be the same as linux ?
>>> f.e. ivrs_ioapic[6]=00:14.0 for my case ?
> 
> Yes.
> 
>>> I'm asking because using it on the command line seems to enable the iommu 
>> fine (which it shouldn't without the override), but i don't seem to see the
>>> "IVHD: Command line override present for IO-APIC %#x" in my xl dmesg... 
>> 
>> Hrrrmm could it be due to the fact that in my case it actually shouldn't 
>> override a present IVRS entry, but add a extra one ?
> 
> Yes. Does Linux print something even in that case?

Just looked at their code once more, and I can't see how they
would print something in that case.

Jan