From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34014) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bovi4-0005gd-LZ for qemu-devel@nongnu.org; Tue, 27 Sep 2016 12:58:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bovi3-00023P-Nr for qemu-devel@nongnu.org; Tue, 27 Sep 2016 12:58:24 -0400 Received: from mail-vk0-x232.google.com ([2607:f8b0:400c:c05::232]:33368) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bovi3-00022p-Fw for qemu-devel@nongnu.org; Tue, 27 Sep 2016 12:58:23 -0400 Received: by mail-vk0-x232.google.com with SMTP id z126so19366571vkd.0 for ; Tue, 27 Sep 2016 09:58:23 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <73DBF468-DE5E-4EF0-A54E-91AD38C74C1D@gmail.com> References: <34249C6D-327A-4ED4-BB2D-8E2F532A5720@gmail.com> <7e2274fa-f649-887c-c78e-7f5b09749450@redhat.com> <73DBF468-DE5E-4EF0-A54E-91AD38C74C1D@gmail.com> From: Peter Maydell Date: Tue, 27 Sep 2016 09:58:02 -0700 Message-ID: Content-Type: text/plain; charset=UTF-8 Subject: Re: [Qemu-devel] How to add my implementation of the fmadds instruction to QEMU List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: G 3 Cc: Eric Blake , "list@suse.de:PowerPC list:PowerPC" , qemu-devel qemu-devel On 27 September 2016 at 09:51, G 3 wrote: > The problem with your reasoning is you assume this instruction has to be > 100% correctly implemented. That every single "corner-case" has to be > accounted for. For upstream QEMU we've already made this design decision -- emulation accuracy comes first, and speed is secondary. That's why we implement this the way we do. thanks -- PMM