From c0c099d157cc5bc942afef766cf141628a6380a1 Mon Sep 17 00:00:00 2001 From: Anthony PERARD Date: Wed, 14 Oct 2015 12:05:17 +0100 Subject: [PATCH] libxl: No emulated disk driver for xvdX disk When a guest configuration list xvdX for its disks, there is no need to provide an emulated driver for the same target. Such configuration can work with the OVMF firmware, as it supports PV disk. Signed-off-by: Anthony PERARD Acked-by: Ian Jackson --- tools/libxl/libxl_dm.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c index e33d492e53..9c9eaa3b9c 100644 --- a/tools/libxl/libxl_dm.c +++ b/tools/libxl/libxl_dm.c @@ -1189,6 +1189,12 @@ static int libxl__build_device_model_args_new(libxl__gc *gc, drive = libxl__sprintf (gc, "file=%s,if=scsi,bus=0,unit=%d,format=%s,cache=writeback", pdev_path, disk, format); + else if (strncmp(disks[i].vdev, "xvd", 3) == 0) + /* + * Do not add any emulated disk when PV disk are + * explicitly asked for. + */ + continue; else if (disk < 6 && b_info->u.hvm.hdtype == LIBXL_HDTYPE_AHCI) { flexarray_vappend(dm_args, "-drive", GCSPRINTF("file=%s,if=none,id=ahcidisk-%d,format=%s,cache=writeback", -- 2.30.2