From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: Re: [PATCHv4 0/5] apic: eoi optimization support Date: Wed, 16 May 2012 18:41:04 +0300 Message-ID: <20120516154103.GA10320@redhat.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Ingo Molnar , "H. Peter Anvin" , Avi Kivity , Marcelo Tosatti , gleb@redhat.com, Linus Torvalds , linux-kernel@vger.kernel.org To: x86@kernel.org, kvm@vger.kernel.org Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On Wed, May 16, 2012 at 02:45:50PM +0300, Michael S. Tsirkin wrote: > I'm looking at reducing the interrupt overhead for virtualized guests: > some workloads spend a large part of their time processing interrupts. > This patchset supplies infrastructure to reduce the IRQ ack overhead on > x86: the idea is to add an eoi_write callback that we can then optimize > without touching other apic functionality. Ugh. I lost first part of the patchset. Sorry. Will send a fixed one now.