From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH] KVM: x86: Run PIT work in own kthread Date: Tue, 17 Apr 2012 13:27:36 +0300 Message-ID: <4F8D4598.5080902@redhat.com> References: <4F8C645C.7010302@siemens.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Marcelo Tosatti , kvm , Linux Kernel Mailing List To: Jan Kiszka Return-path: In-Reply-To: <4F8C645C.7010302@siemens.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On 04/16/2012 09:26 PM, Jan Kiszka wrote: > We can't run PIT IRQ injection work in the interrupt context of the host > timer. This would allow the user to influence the handler complexity by > asking for a broadcast to a large number of VCPUs. Therefore, this work > was pushed into workqueue context in 9d244caf2e. However, this prevents > prioritizing the PIT injection over other task as workqueues share > kernel threads. > > This replaces the workqueue with a kthread worker and gives that thread > a name in the format "kvm-pit/". That allows to > identify and adjust the kthread priority according to the VM process > parameters. Is this a new ABI? Patch looks reasonable. -- error compiling committee.c: too many arguments to function