From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rusty Russell Subject: Re: INDIRECT and NEXT Date: Fri, 23 Oct 2009 14:01:23 +1030 Message-ID: <200910231401.24419.rusty@rustcorp.com.au> References: <20091004143734.GB17578@redhat.com> <200910191304.20748.rusty@rustcorp.com.au> <20091022093745.GA27765@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20091022093745.GA27765@redhat.com> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: "Michael S. Tsirkin" Cc: virtualization@lists.osdl.org List-Id: virtualization@lists.linuxfoundation.org On Thu, 22 Oct 2009 08:07:45 pm Michael S. Tsirkin wrote: > Imagine an indirect entry where NEXT bit is also set. Hmm, so it's not obvious whether the kvm userspace code handles it correctly either. Want to hack something up to use NEXT + INDIRECT, then we can actually test it? If it doesn't work, this will have to be a new feature bit. Also, we have a limitation that you can't have more descriptors than the ring size, even with indirect, due to overzealous checks... Thanks, Rusty.