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Re: [Xen-devel] [PATCH] x86: change IO-APIC ack method default for singl
| To: | "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] x86: change IO-APIC ack method default for single IO-APIC systems |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Wed, 21 Jan 2009 14:37:13 +0000 |
| Cc: | |
| Delivery-date: | Wed, 21 Jan 2009 06:37:43 -0800 |
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| Thread-topic: | [Xen-devel] [PATCH] x86: change IO-APIC ack method default for single IO-APIC systems |
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On 21/01/2009 14:23, "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx> wrote: > xen-devel-bounces@xxxxxxxxxxxxxxxxxxx <> wrote: >> Ever since 3.0.2 we've been carrying this patch in our products. Since >> there was no indication that there would be anything wrong with the >> 'new' IO-APIC ack method added back then, we finally decided to drop >> this patch recently from SLE11, to find that the subsequent release >> candidate failed to work on at least on system without using > > This is a bit strange, a bit curios that do you know the reason that it not > working? Yes - this also -- there doesn't seem to be a good reason that the 'new' ack_type wouldn't work in all cases. We're also somewhat depending on it (or similar) for unmaskable MSIs. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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