[PATCH 16 of 16] libxl: add iommu parameter to qemu-dm

[Wei Wang <wei.wang2@amd.com>]

# HG changeset patch
# User Wei Wang <wei.wang2@amd.com>
# Date 1323876144 -3600
# Node ID 24f4a0a23da71c58f457f0bf98aa8238dd45332d
# Parent  93658ca85035d6a4e56e2e6602c02859974d30a4
libxl: add iommu parameter to qemu-dm.
When iomm = 0, virtual iommu device will be disabled.

Signed-off-by: Wei Wang <wei.wang2@amd.com>

diff -r 93658ca85035 -r 24f4a0a23da7 tools/libxl/libxl_dm.c
--- a/tools/libxl/libxl_dm.c	Wed Dec 14 16:22:23 2011 +0100
+++ b/tools/libxl/libxl_dm.c	Wed Dec 14 16:22:24 2011 +0100
@@ -194,6 +194,9 @@ static char ** libxl__build_device_model
         if (info->gfx_passthru) {
             flexarray_append(dm_args, "-gfx_passthru");
         }
+        if (info->iommu) {
+            flexarray_append(dm_args, "-iommu");
+        }
     }
     if (info->saved_state) {
         flexarray_vappend(dm_args, "-loadvm", info->saved_state, NULL);
@@ -404,6 +407,9 @@ static char ** libxl__build_device_model
         if (info->gfx_passthru) {
             flexarray_append(dm_args, "-gfx_passthru");
         }
+        if (info->iommu) {
+            flexarray_append(dm_args, "-iommu");
+        }
     }
     if (info->saved_state) {
         /* This file descriptor is meant to be used by QEMU */
diff -r 93658ca85035 -r 24f4a0a23da7 tools/libxl/libxl_types.idl
--- a/tools/libxl/libxl_types.idl	Wed Dec 14 16:22:23 2011 +0100
+++ b/tools/libxl/libxl_types.idl	Wed Dec 14 16:22:24 2011 +0100
@@ -254,6 +254,7 @@ The password never expires"""),
     ("extra",            libxl_string_list, False, "extra parameters pass directly to qemu, NULL terminated"),
     ("extra_pv",         libxl_string_list, False, "extra parameters pass directly to qemu for PV guest, NULL terminated"),
     ("extra_hvm",        libxl_string_list, False, "extra parameters pass directly to qemu for HVM guest, NULL terminated"),
+    ("iommu",            bool,              False, "guest iommu enabled or disabled"),
     ],
     comment=
 """Device Model information.
diff -r 93658ca85035 -r 24f4a0a23da7 tools/libxl/xl_cmdimpl.c
--- a/tools/libxl/xl_cmdimpl.c	Wed Dec 14 16:22:23 2011 +0100
+++ b/tools/libxl/xl_cmdimpl.c	Wed Dec 14 16:22:24 2011 +0100
@@ -386,6 +386,7 @@ static void printf_info(int domid,
         printf("\t\t\t(spicedisable_ticketing %d)\n",
                     dm_info->spicedisable_ticketing);
         printf("\t\t\t(spiceagent_mouse %d)\n", dm_info->spiceagent_mouse);
+        printf("\t\t\t(iommu %d)\n", dm_info->iommu);
         printf("\t\t)\n");
         break;
     case LIBXL_DOMAIN_TYPE_PV:
@@ -1217,6 +1218,8 @@ skip_vfb:
         xlu_cfg_replace_string (config, "soundhw", &dm_info->soundhw, 0);
         if (!xlu_cfg_get_long (config, "xen_platform_pci", &l, 0))
             dm_info->xen_platform_pci = l;
+        if (!xlu_cfg_get_long (config, "iommu", &l, 0))
+            dm_info->iommu = l;
     }
 
     dm_info->type = c_info->type;