[Xen-devel] [PATCH v4 04/31] libxc: introduce the notion of a container type

[Roger Pau Monne <roger.pau@xxxxxxxxxx>]

Introduce the notion of a container type into xc_dom_image. This will be
needed by later changes that will also use xc_dom_image in order to build
HVM guests.

Signed-off-by: Roger Pau Monnà <roger.pau@xxxxxxxxxx>
Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Cc: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Cc: Ian Campbell <ian.campbell@xxxxxxxxxx>
Cc: Wei Liu <wei.liu2@xxxxxxxxxx>
---
Changes since v3:
 - Add Andrew Cooper Reviewed-by.
 - Add Wei Acked-by.
---
 tools/libxc/include/xc_dom.h | 6 ++++++
 tools/libxc/xc_dom_x86.c     | 4 ++++
 tools/libxl/libxl_dom.c      | 1 +
 3 files changed, 11 insertions(+)

diff --git a/tools/libxc/include/xc_dom.h b/tools/libxc/include/xc_dom.h
index 9cf13e2..bc55ec9 100644
--- a/tools/libxc/include/xc_dom.h
+++ b/tools/libxc/include/xc_dom.h
@@ -179,6 +179,12 @@ struct xc_dom_image {
     struct xc_dom_arch *arch_hooks;
     /* allocate up to virt_alloc_end */
     int (*allocate) (struct xc_dom_image * dom, xen_vaddr_t up_to);
+
+    /* Container type (HVM or PV). */
+    enum {
+        XC_DOM_PV_CONTAINER,
+        XC_DOM_HVM_CONTAINER,
+    } container_type;
 };
 
 /* --- pluggable kernel loader ------------------------------------- */
diff --git a/tools/libxc/xc_dom_x86.c b/tools/libxc/xc_dom_x86.c
index dc2f4aa..c7bfc0c 100644
--- a/tools/libxc/xc_dom_x86.c
+++ b/tools/libxc/xc_dom_x86.c
@@ -1071,6 +1071,10 @@ int arch_setup_bootlate(struct xc_dom_image *dom)
 
 int xc_dom_feature_translated(struct xc_dom_image *dom)
 {
+    /* Guests running inside HVM containers are always auto-translated. */
+    if ( dom->container_type == XC_DOM_HVM_CONTAINER )
+        return 1;
+
     return elf_xen_feature_get(XENFEAT_auto_translated_physmap, dom->f_active);
 }
 
diff --git a/tools/libxl/libxl_dom.c b/tools/libxl/libxl_dom.c
index c1d0d8c..92c4278 100644
--- a/tools/libxl/libxl_dom.c
+++ b/tools/libxl/libxl_dom.c
@@ -619,6 +619,7 @@ int libxl__build_pv(libxl__gc *gc, uint32_t domid,
     }
 
     dom->pvh_enabled = state->pvh_enabled;
+    dom->container_type = XC_DOM_PV_CONTAINER;
 
     LOG(DEBUG, "pv kernel mapped %d path %s", state->pv_kernel.mapped, 
state->pv_kernel.path);
 
-- 
1.9.5 (Apple Git-50.3)


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