From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Dor Laor" Subject: Re: paravirtualization & cr3-cache feature Date: Mon, 12 Feb 2007 23:57:06 -0800 Message-ID: <64F9B87B6B770947A9F8391472E032160A66C681@ehost011-8.exch011.intermedia.net> References: <64F9B87B6B770947A9F8391472E032160A66BE0A@ehost011-8.exch011.intermedia.net> <20070212130644.GF25460@amd.com> <64F9B87B6B770947A9F8391472E032160A66C0A6@ehost011-8.exch011.intermedia.net> <20070212140359.GE1879@redhat.com> <2e59e6970702122052x69a4ea9asafd2d0ef438f55ce@mail.gmail.com> <64F9B87B6B770947A9F8391472E032160A66C679@ehost011-8.exch011.intermedia.net> <1171353019.12771.37.camel@laptopd505.fenrus.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: "Arjan van de Ven" Return-path: Content-class: urn:content-classes:message In-Reply-To: <1171353019.12771.37.camel-NIQFrBLA1CpScpXdPBN83iCwEArCW2h5@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org > >> Second, we currently use Qemu's device emulation were the ne2k device >> does dozens of IO accesses per packet! The rtl8139 is better and does >> about 3 IO(MMIO) per packet. The current maximum throughput using the > >and this is where paravirtualized device drivers can help, like Ingo's >network driver or the block driver I'm working on (which currently >happily writes 215Mbyte/sec from guest userspace using normal write() to >the virtual disk)... Great news. Expecting to see the patch soon. Do you base your code over the kernel's paravirt_ops and Ingo's KVM hypercall? Jusy yesterday Yaniv Kamay & I have discovered some bugs in the 'kvm_hypercall' function. The cache_regs/decahce_regs were mixed up. Also I added a x86_64 hypercall.h file. Hope to commit it today or tomorrow. > >-- >if you want to mail me at work (you don't), use arjan (at) linux.intel.com >Test the interaction between Linux and your BIOS via >http://www.linuxfirmwarekit.org ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642