From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34360) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dJ3QW-0001qV-Fp for qemu-devel@nongnu.org; Thu, 08 Jun 2017 15:49:05 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dJ3QT-0005Nh-Cu for qemu-devel@nongnu.org; Thu, 08 Jun 2017 15:49:04 -0400 Received: from mx1.redhat.com ([209.132.183.28]:39688) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dJ3QT-0005NI-6n for qemu-devel@nongnu.org; Thu, 08 Jun 2017 15:49:01 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id EDB58C008B1B for ; Thu, 8 Jun 2017 19:48:59 +0000 (UTC) Message-ID: <1496951333.29761.5.camel@redhat.com> From: Gerd Hoffmann Date: Thu, 08 Jun 2017 21:48:53 +0200 In-Reply-To: <20170608204026-mutt-send-email-mst@kernel.org> References: <20170608161013.17920-1-lersek@redhat.com> <20170608204026-mutt-send-email-mst@kernel.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 Subject: Re: [Qemu-devel] [PATCH] q35/mch: implement extended TSEG sizes List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Michael S. Tsirkin" , Laszlo Ersek Cc: qemu devel list , Paolo Bonzini Hi, > I really dislike negotiation being re-invented for each device.=C2=A0=C2= =A0Do > we > need these tricks?=C2=A0=C2=A0Can we just do fw cfg with standard discove= ry? > This ties in with my proposal to generalize smi features to > generic ones. Device properties should be part of the device. We should have done this with the smi too. A more standard way to handle this would be to add a vendor-specific pci capability and place the register there. Not sure we have room for that in the pci config space though. cheers, Gerd