From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:40941) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ttgjw-0001tb-V2 for qemu-devel@nongnu.org; Fri, 11 Jan 2013 10:41:56 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Ttgjp-0003T3-09 for qemu-devel@nongnu.org; Fri, 11 Jan 2013 10:41:52 -0500 Received: from mx1.redhat.com ([209.132.183.28]:38864) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ttgjo-0003Sq-Pk for qemu-devel@nongnu.org; Fri, 11 Jan 2013 10:41:44 -0500 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r0BFfhY0010210 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Fri, 11 Jan 2013 10:41:43 -0500 From: Stefan Hajnoczi Date: Fri, 11 Jan 2013 16:41:26 +0100 Message-Id: <1357918889-5817-1-git-send-email-stefanha@redhat.com> Subject: [Qemu-devel] [PATCH v3 0/3] dataplane: misaligned buffers support for Windows guests List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Kevin Wolf , Paolo Bonzini , Stefan Hajnoczi Windows guests do not work with x-data-plane=on because misaligned request support is missing in hw/dataplane/virtio-blk.c. This series adds a bounce buffer when the request is misaligned. Windows guests now work with x-data-plane=on. v3: * Use iov/iov_cnt before modifying them in do_rdwr_cmd() [Kevin, Paolo] * Keep bounce buffer iovec alive across io_submit() [Stefan] * New & improved! Now tested against Linux in addition to Windows guests. [Paolo] v2: * Use qemu_iovec_from_buffer() on read completion, not qemu_iovec_to_buffer() [Stefan] Stefan Hajnoczi (3): block: make qiov_is_aligned() public dataplane: extract virtio-blk read/write processing into do_rdwr_cmd() dataplane: handle misaligned virtio-blk requests block.c | 16 +++++++++++ block/raw-posix.c | 18 +----------- hw/dataplane/virtio-blk.c | 71 +++++++++++++++++++++++++++++++++++++++-------- include/block/block.h | 1 + 4 files changed, 78 insertions(+), 28 deletions(-) -- 1.8.0.2