From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Sender: List-Post: List-Help: List-Unsubscribe: List-Subscribe: Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id E722A98642C for ; Mon, 31 Oct 2022 15:46:02 +0000 (UTC) Date: Mon, 31 Oct 2022 11:45:55 -0400 From: "Michael S. Tsirkin" Message-ID: <20221031114132-mutt-send-email-mst@kernel.org> References: <20221007165643.3920613-1-usama.arif@bytedance.com> <20221007165643.3920613-4-usama.arif@bytedance.com> MIME-Version: 1.0 In-Reply-To: Subject: [virtio-dev] Re: [PATCH v3 3/4] content: Introduce driver/device auxiliary notifications for MMIO Content-Type: text/plain; charset=us-ascii Content-Disposition: inline To: Stefan Hajnoczi Cc: Usama Arif , virtio-dev@lists.oasis-open.org, ndragazis@arrikto.com, fam.zheng@bytedance.com, liangma@liangbit.com List-ID: On Thu, Oct 27, 2022 at 05:27:28PM -0400, Stefan Hajnoczi wrote: > On Fri, Oct 07, 2022 at 05:56:42PM +0100, Usama Arif wrote: > > This includes the additions to the corresponding device and driver > > conformances. > > > > Signed-off-by: Usama Arif > > Signed-off-by: Stefan Hajnoczi > > You can keep this. One thought: > > I realized that virtio-mmio support won't be very useful until > virtio-mmio gets MSI-X support because drivers currently cannot > differentiate between device auxiliary notifications. > > Stefan The big issue with MSI is it actually needs a ton of registers for interrupt rebalancing, masking etc and they need to be fast. Maybe a status bit like pci has makes sense here. -- MST --------------------------------------------------------------------- To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org