[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: [GIT PULL] Xen APIC hooks (with io_apic_ops)
* Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote: > Hi Ingo, > > Here's a revised set of the Xen APIC changes which adds > io_apic_ops to allow Xen to intercept IO APIC access operations. In a previous discussion you said: > IO APIC operations are not even slightly performance critical? Are > they ever used on the interrupt delivery path? Since they are not performance critical, then why doesnt Xen catch the IO-APIC accesses, and virtualizes the device? If you want to hook into the IO-APIC code at such a low level, why dont you hook into the _hardware_ API - i.e. catch those setup/routing modifications to the IO-APIC space. No Linux changes are needed in that case. Ingo _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |