From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41046) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YsF9q-0005QO-Vx for qemu-devel@nongnu.org; Tue, 12 May 2015 14:43:59 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YsF9c-0004Lz-3B for qemu-devel@nongnu.org; Tue, 12 May 2015 14:43:58 -0400 Received: from mail.csclub.uwaterloo.ca ([129.97.134.52]:47241) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YsF9b-0004Lv-Tf for qemu-devel@nongnu.org; Tue, 12 May 2015 14:43:43 -0400 Received: from caffeine.csclub.uwaterloo.ca (caffeine.csclub.uwaterloo.ca [129.97.134.17]) by mail.csclub.uwaterloo.ca (Postfix) with SMTP id 8B74F334A4 for ; Tue, 12 May 2015 14:43:41 -0400 (EDT) From: "Lennart Sorensen" Date: Tue, 12 May 2015 14:43:41 -0400 Message-ID: <20150512184341.GO24389@csclub.uwaterloo.ca> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Subject: [Qemu-devel] Serial port passthrough for arm kvm List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org We are trying to pass a serial port through to an arm guest on kvm and the serial port is working for passing data, but is not setting the baud rate when the guest changes it. If I change the baud rate of the port from the host, then the baud rate is set correctly and data is passed through just fine. The emulated system is vexpress a15 with the port passed through with: -serial /dev/ttyS6 Is there something missing for handling the baud rate from ttyAMA ports in the guest and updating the setting on the host port? I am using qemu 2.1 at the moment, but couldn't find anything in the git tree that looked like it was likely to have fixed this. Any suggestions for where in the code to look and try to debug this? -- Len Sorensen