[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] x2apic mode vs. interrupt remapping
According to the #Cset20168, x2apic is only enabled when all VT-d engines support IR and EIM support, so the policy should be same with Linux's. Xiantao Jan Beulich wrote: > Hi, > > while the Linux kernel enters x2apic mode only when it was able to > initialize interrupt remapping (leaving aside a KVM special case), Xen > treats the two features as independent ones. We're having a report > where interrupt delivery doesn't work in x2apic mode (i.e. no-x2apic > makes the system boot successfully), and hence I'm wondering why > Xen would use this mode on a wider range of machines than Linux. > > Thanks, Jan > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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