From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: [PATCH] Activate Virtualization On Demand v2 Date: Mon, 15 Jun 2009 08:17:37 -0400 Message-ID: <20090615121737.GA11510@infradead.org> References: <1245065405-5714-1-git-send-email-agraf@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: kvm@vger.kernel.org To: Alexander Graf Return-path: Received: from bombadil.infradead.org ([18.85.46.34]:36011 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754957AbZFOMRf (ORCPT ); Mon, 15 Jun 2009 08:17:35 -0400 Content-Disposition: inline In-Reply-To: <1245065405-5714-1-git-send-email-agraf@suse.de> Sender: kvm-owner@vger.kernel.org List-ID: On Mon, Jun 15, 2009 at 01:30:05PM +0200, Alexander Graf wrote: > X86 CPUs need to have some magic happening to enable the virtualization > extensions on them. This magic can result in unpleasant results for > users, like blocking other VMMs from working (vmx) or using invalid TLB > entries (svm). > > Currently KVM activates virtualization when the respective kernel module > is loaded. This blocks us from autoloading KVM modules without breaking > other VMMs. That will only become interesting if we every have such a thing in mainline. So NACK, lots of complication for no good reason.