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Date: Thu, 19 Jul 2007 12:23:24 +0300 From: Avi Kivity <avi@...ranet.com> To: Lennart Sorensen <lsorense@...lub.uwaterloo.ca> CC: Alan Cox <alan@...rguk.ukuu.org.uk>, Dor Laor <dor.laor@...ranet.com>, kvm-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org Subject: Re: [kvm-devel] [RFC] Deferred interrupt handling. Lennart Sorensen wrote: > On Wed, Jul 18, 2007 at 07:46:13PM +0300, Avi Kivity wrote: > >> IMO the only reasonable solution is to disallow interrupt forwarding >> with shared irqs. If someone later comes up with a bright idea, we can >> implement it. Otherwise the problem will solve itself with hardware >> moving to msi. >> > > Disallowing shared IRQs means disallowing PCI devices in general, so now > you are back to ISA only devices, which it sounds like were the only > things already allowed by vm86 or whatever it was for passing through. > > No, it means disallowing pci devices that use shared irqs, and allowing pci devices that use non-shared irqs. > Certainly does appear to have potential though for allowing more > interesting virtual machines. > IMO pass-through is counter to most of the benefits of virtualization. But users seem to want it. -- error compiling committee.c: too many arguments to function - 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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