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Message-ID: <m1hby293fh.fsf@fess.ebiederm.org> Date: Fri, 26 Jun 2009 12:54:10 -0700 From: ebiederm@...ssion.com (Eric W. Biederman) To: Ingo Molnar <mingo@...e.hu> Cc: "Pan\, Jacob jun" <jacob.jun.pan@...el.com>, Jeremy Fitzhardinge <jeremy@...p.org>, "linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>, "H. Peter Anvin" <hpa@...ux.intel.com> Subject: Re: [PATCH 8/9] x86/apic: match destination id with destination mode Ingo Molnar <mingo@...e.hu> writes: > The question here is whether this should layer on top of Jeremy's > IO-APIC driverization patches. I think it should. The patch is a bad hack that is totally misdocumented. A bit like the Xen apic changes in that respect. I haven't seen Jeremy's IO-APIC driverization patches. I am stumped why we need any driverization in this area. x86_64 and has had for years a mechanism that is perfectly fine for abstracting this. i386 also has had something similar and last I looked we just about had that code merged. Xen doesn't have ioapics so it doesn't need us faking writes to ioapics. Xen either needs to parse the ioapic tables itself or Xen needs a proper interface to be given the table information. I this patch can be replaced by a 2 line change to the apic mode logic to force us into physflat mode on moorestown. Eric -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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