From: George Dunlap <George.Dunlap@eu.citrix.com>
To: Wei Wang2 <wei.wang2@amd.com>
Cc: Ian Campbell <Ian.Campbell@eu.citrix.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: [PATCH] AMD IOMMU: Use global interrupt remapping table by default
Date: Thu, 21 Jul 2011 15:36:01 +0100 [thread overview]
Message-ID: <CAFLBxZYH5AxgYnHnK393b9y0_-34Ad8Ec3k9gYJLyWiz6urejQ@mail.gmail.com> (raw)
In-Reply-To: <201107211238.15699.wei.wang2@amd.com>
On Thu, Jul 21, 2011 at 11:38 AM, Wei Wang2 <wei.wang2@amd.com> wrote:
> On Thursday 21 July 2011 11:07:40 George Dunlap wrote:
>> On Wed, Jul 20, 2011 at 4:56 PM, Wei Wang2 <wei.wang2@amd.com> wrote:
>> > George & Ian,
>> > Patch attached. This patch removes global interrupt remapping table and
>> > uses per-device table instead. This should work with per-cpu IDTs. We
>> > are safe to remove global table since SATA device id issue dose not
>> > appear in recent production BIOS.
>>
>> Exactly how "recent" are these BIOSes? Or I guess alternately, how
>> old are the BIOSes that broke?
>
> George,
> Actually, we encountered this issue about 2 years ago and fixed this in BIOS.
> There should be very less productions shipped the mark at that time (probably
> none) and all newer products after that should absorb this fix. Even without
> BIOS fix, user can always disable IDE mode from BIOS menu manually if they
> were hit by this issue. So basically, I think removing global table is also
> reasonable.
Sounds reasonable to me.
Acked-by: George Dunlap <george.dunlap@eu.citirx.com>
> Thanks
> Wei
>
>> We still have customers who seem to have hardware that's several years
>> old; if the answer isn't something like "8 years", it may be better to
>> just change the default setting.
>>
>> -George
>
>
>
>
> _______________________________________________
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> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
>
prev parent reply other threads:[~2011-07-21 14:36 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-28 16:32 [PATCH] AMD IOMMU: Use global interrupt remapping table by default Wei Wang2
2011-07-19 14:14 ` George Dunlap
2011-07-20 9:52 ` Wei Wang2
2011-07-20 10:50 ` Ian Campbell
2011-07-20 12:34 ` Wei Wang2
2011-07-20 13:01 ` Ian Campbell
2011-07-20 15:56 ` Wei Wang2
2011-07-21 9:07 ` George Dunlap
2011-07-21 10:38 ` Wei Wang2
2011-07-21 14:36 ` George Dunlap [this message]
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