From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37921) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V1vhg-0006Cy-1O for qemu-devel@nongnu.org; Wed, 24 Jul 2013 05:49:52 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1V1vhf-0006f3-4i for qemu-devel@nongnu.org; Wed, 24 Jul 2013 05:49:51 -0400 Received: from mail-ob0-f179.google.com ([209.85.214.179]:40418) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V1vhf-0006ez-07 for qemu-devel@nongnu.org; Wed, 24 Jul 2013 05:49:51 -0400 Received: by mail-ob0-f179.google.com with SMTP id xk17so12324131obc.38 for ; Wed, 24 Jul 2013 02:49:50 -0700 (PDT) Message-ID: <51EFA336.1010600@ozlabs.ru> Date: Wed, 24 Jul 2013 19:49:42 +1000 From: Alexey Kardashevskiy MIME-Version: 1.0 References: <1374654505-17755-1-git-send-email-aik@ozlabs.ru> <1374656722.3916.127.camel@pasglop> In-Reply-To: <1374656722.3916.127.camel@pasglop> Content-Type: text/plain; charset=KOI8-R Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH] RFC v2: hcd-ohci: add dma error handling List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Benjamin Herrenschmidt Cc: Anthony Liguori , Gerd Hoffmann , qemu-devel@nongnu.org, Alexander Graf On 07/24/2013 07:05 PM, Benjamin Herrenschmidt wrote: > On Wed, 2013-07-24 at 18:28 +1000, Alexey Kardashevskiy wrote: >> 1. if a physical device once reported UnrecoverableError, what is it >> expected to be able to do after that? Should ohci_hcd module reloading bring >> it back to life? With this patch, OHCI dies till reboot (but at least it does >> not break other subsystems). > > Not sure what the spec says but I assume an HC reset should work. That > and a PCI reset which we can potentially trigger in SW (though we > haven't yet implemented the RTAS interfaces for it). Double checked. "rmmod ohci_hcd; modprobe ohci_hcd" brings it back so we are good here :) -- Alexey