From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40644) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c9lfH-0000Dk-SG for qemu-devel@nongnu.org; Wed, 23 Nov 2016 23:29:40 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c9lfE-0003T7-IH for qemu-devel@nongnu.org; Wed, 23 Nov 2016 23:29:39 -0500 Received: from mx1.redhat.com ([209.132.183.28]:36500) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1c9lfE-0003Rv-CH for qemu-devel@nongnu.org; Wed, 23 Nov 2016 23:29:36 -0500 Date: Thu, 24 Nov 2016 06:29:33 +0200 From: "Michael S. Tsirkin" Message-ID: <20161124062859-mutt-send-email-mst@kernel.org> References: <20161118103659.10448-1-lersek@redhat.com> <20161124003835.GA20281@morn.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20161124003835.GA20281@morn.lan> Subject: Re: [Qemu-devel] [PATCH v3 for-2.9 0/3] q35: add negotiable broadcast SMI List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Kevin O'Connor Cc: Laszlo Ersek , Paolo Bonzini , qemu devel list , Gerd Hoffmann , Igor Mammedov , "Jordan Justen (Intel address)" , Michael Kinney On Wed, Nov 23, 2016 at 07:38:35PM -0500, Kevin O'Connor wrote: > As a general comment - it does seem unfortunate that we keep building > adhoc interfaces to communicate information from firmware to QEMU. We > have a generic mechanism (fw_cfg) for passing adhoc information from > QEMU to the firmware, but the inverse seems to always involve magic > pci registers, magic io space registers, specific init ordering, etc. FWIW I posted a proposal fw-cfg: support writeable blobs a while ago to try to address that -- MST