[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [konrad.wilk@xxxxxxxxxx: [Xen-devel] [PATCH 1 of 1] Intel VT-D: Don't turn x2APIC if there is a missing DRHD entry for the IOAPIC]
On Wed, Mar 10, 2010 at 04:42:19PM +0800, Zhang, Xiantao wrote: > Jan Beulich wrote: > >>>> Konrad Rzeszutek Wilk 03/09/10 6:34 PM >>> > >> > >> What are you guys feeling about this patch? > > > > My main question is whether just disabling x2apic in this case is > > sufficient (i.e. whether instead we shouldn't disable iommu, or at > > least interrupt remapping, altogether). > > iommu_enable is called after this point, and it also has sanity-check to > determine whether enable or disable iommu and its related features. This > early check is only used to determine whether to enable x2apic because it > must be enabled at very early time if supported. Exactly. So the x2APIC is turned off here and then later on the Interrupt Remaping is turned off as well. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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