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Date: Wed, 1 Apr 2009 13:40:39 -0700 From: Chris Wright <chrisw@...s-sol.org> To: Anthony Liguori <anthony@...emonkey.ws> Cc: Andi Kleen <andi@...stfloor.org>, Gregory Haskins <ghaskins@...ell.com>, linux-kernel@...r.kernel.org, agraf@...e.de, pmullaney@...ell.com, pmorreale@...ell.com, rusty@...tcorp.com.au, netdev@...r.kernel.org, kvm@...r.kernel.org Subject: Re: [RFC PATCH 00/17] virtual-bus * Anthony Liguori (anthony@...emonkey.ws) wrote: > Andi Kleen wrote: >> On Wed, Apr 01, 2009 at 10:19:49AM -0400, Gregory Haskins wrote: >>> Performance. We are trying to create a high performance IO infrastructure. >> >> Ok. So the goal is to bypass user space qemu completely for better >> performance. Can you please put this into the initial patch >> description? > > FWIW, there's nothing that prevents in-kernel back ends with virtio so > vbus certainly isn't required for in-kernel backends. Indeed. > That said, I don't think we're bound today by the fact that we're in > userspace. Rather we're bound by the interfaces we have between the > host kernel and userspace to generate IO. I'd rather fix those > interfaces than put more stuff in the kernel. And more stuff in the kernel can come at the potential cost of weakening protection/isolation. -- 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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