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Re: [Xen-devel] [PATCH] hvm/vpt: Check that an irq is not blocked before
| To: | George Dunlap <George.Dunlap@xxxxxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] hvm/vpt: Check that an irq is not blocked before waking the vcpu |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Mon, 09 Mar 2009 12:01:58 +0000 |
| Cc: | |
| Delivery-date: | Mon, 09 Mar 2009 05:02:34 -0700 |
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| In-reply-to: | <de76405a0903090445m8a62000p9c6b8b18bcbbc718@xxxxxxxxxxxxxx> |
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| Thread-index: | AcmgrKvSukMyj8y0Q3eA2yINWJoMTAAAi0Nr |
| Thread-topic: | [Xen-devel] [PATCH] hvm/vpt: Check that an irq is not blocked before waking the vcpu |
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On 09/03/2009 11:45, "George Dunlap" <George.Dunlap@xxxxxxxxxxxxx> wrote: > Currently, when a timer fires for a vpt interrupt, the interrupt > handler calls vcpu_kick() without checking to see if the IRQ is > blocked. This causes the vcpu to wake up out of a halt when it > shouldn't. > > Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx> Only one question: could this race an unmask operation? Before this patch, pt_irq_masked() is only executed for the local vcpu, so such races may not have been considered. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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