From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Mueller Subject: Re: [PATCH v1] vhost: avoid large order allocations Date: Tue, 13 May 2014 17:07:31 +0200 Message-ID: <20140513170731.181cc4e3@bee> References: <1399970133-46783-1-git-send-email-mimu@linux.vnet.ibm.com> <1399970133-46783-2-git-send-email-mimu@linux.vnet.ibm.com> <20140513084049.GE29442@redhat.com> <87tx8tg3a1.fsf@kima.orebokech.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: "Michael S. Tsirkin" , kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, borntraeger@de.ibm.com, cornelia.huck@de.ibm.com, ddongch@cn.ibm.com To: Romain Francoise Return-path: In-Reply-To: <87tx8tg3a1.fsf@kima.orebokech.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Tue, 13 May 2014 16:29:58 +0200 Romain Francoise wrote: > "Michael S. Tsirkin" writes: > > > Please dont' do this, extra indirection hurts performance. > > Instead, please change vhost_net_open and scsi to allocate the whole > > structure with vmalloc if kmalloc fails, along the lines of > > 74d332c13b2148ae934ea94dac1745ae92efe8e5 > > Back in January 2013, you didn't seem to think it was a good idea: > > https://lkml.org/lkml/2013/1/23/492 > Hi Romain, in that case I'd suggest that you submit your patch, ours will look pretty much the same! Cheers Michael