From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anthony Liguori Subject: Re: multiple allocation for vmcs or am i missing something. Date: Thu, 08 Feb 2007 09:36:13 -0600 Message-ID: <45CB436D.1010908@codemonkey.ws> References: <652016d30702080721n5dd5a848ib4fa56fd1757148b@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Manish Regmi Return-path: In-Reply-To: <652016d30702080721n5dd5a848ib4fa56fd1757148b-JsoAwUIsXosN+BqQ9rBEUg@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 Manish Regmi wrote: > When kvm initializes, it calls hardware_setup which calls > alloc_kvm_area which allocates vmcs for each online processor and > stores the pointer in percpu basis. > VT requires a per-cpu page to store the host state in when VMLAUNCH is executed. This is the host save area and it's passed to the VMXON instruction in hardware_enable(). It's the VMCS for the host. Regards, Anthony Liguori > Later when vmx_create_vcpu is called, the vmcs area is allocated > (again) and this time for the cpu the code is currently executing on. > possibly it is already allocated. > > Is this a bug or i am missing something. > > > ------------------------------------------------------------------------- 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