From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: [PATCH 0/2] virtio-blk spec: document topology info, add WCE toggle Date: Tue, 3 Jul 2012 15:16:50 +0200 Message-ID: <1341321412-24214-1-git-send-email-pbonzini@redhat.com> Return-path: Sender: kvm-owner@vger.kernel.org To: virtualization@lists.osdl.org, kvm@vger.kernel.org, rusty@rustcorp.com.au List-Id: virtualization@lists.linuxfoundation.org Hi Rusty, here are two improvements to the virtio-blk spec. The first documents the status quo of an extension that has already been supported in QEMU for several releases, but never made it to the official spec. The second adds support for toggling the cache mode between writethrough and writeback. Two mechanisms are introduced for this. One is to not negotiate VIRTIO_BLK_F_FLUSH; it can be done only at reset time and is more of a refinement geared towards older or limited guests, in order to make them safe wrt power losses. The second is via feature bits and a new configuration field. Paolo Bonzini (2): virtio-blk spec: document topology info virtio-blk spec: writeback cache enable improvements virtio-spec.lyx | 136 +++++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 132 insertions(+), 4 deletions(-) -- 1.7.10.2