[Xen-devel] [PATCH v3 4/6] tools: libxendevicemodel: Provide xendevicemodel_add_to_physmap

[Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>]

Signed-off-by: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>
Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Reviewed-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
---

Changed in v3:
* Match width of size with updated hypervisor interface.
* Match description with the one for the hypervisor interface.

Changed in v2:
* Make it operate on a range.

 tools/libs/devicemodel/Makefile                 |  2 +-
 tools/libs/devicemodel/core.c                   | 20 ++++++++++++++++++++
 tools/libs/devicemodel/include/xendevicemodel.h | 15 +++++++++++++++
 tools/libs/devicemodel/libxendevicemodel.map    |  5 +++++
 4 files changed, 41 insertions(+), 1 deletion(-)

diff --git a/tools/libs/devicemodel/Makefile b/tools/libs/devicemodel/Makefile
index 342371a..5b2df7a 100644
--- a/tools/libs/devicemodel/Makefile
+++ b/tools/libs/devicemodel/Makefile
@@ -2,7 +2,7 @@ XEN_ROOT = $(CURDIR)/../../..
 include $(XEN_ROOT)/tools/Rules.mk
 
 MAJOR    = 1
-MINOR    = 1
+MINOR    = 2
 SHLIB_LDFLAGS += -Wl,--version-script=libxendevicemodel.map
 
 CFLAGS   += -Werror -Wmissing-prototypes
diff --git a/tools/libs/devicemodel/core.c b/tools/libs/devicemodel/core.c
index 355b7de..5545f61 100644
--- a/tools/libs/devicemodel/core.c
+++ b/tools/libs/devicemodel/core.c
@@ -564,6 +564,26 @@ int xendevicemodel_shutdown(
     return xendevicemodel_op(dmod, domid, 1, &op, sizeof(op));
 }
 
+int xendevicemodel_add_to_physmap(
+    xendevicemodel_handle *dmod, domid_t domid, uint32_t size, uint64_t 
src_gfn,
+    uint64_t dst_gfn)
+{
+    struct xen_dm_op op;
+    struct xen_dm_op_add_to_physmap *data;
+
+    memset(&op, 0, sizeof(op));
+
+    op.op = XEN_DMOP_add_to_physmap;
+    data = &op.u.add_to_physmap;
+
+    data->size = size;
+    data->pad = 0;
+    data->src_gfn = src_gfn;
+    data->dst_gfn = dst_gfn;
+
+    return xendevicemodel_op(dmod, domid, 1, &op, sizeof(op));
+}
+
 int xendevicemodel_restrict(xendevicemodel_handle *dmod, domid_t domid)
 {
     return osdep_xendevicemodel_restrict(dmod, domid);
diff --git a/tools/libs/devicemodel/include/xendevicemodel.h 
b/tools/libs/devicemodel/include/xendevicemodel.h
index dda0bc7..ac12239 100644
--- a/tools/libs/devicemodel/include/xendevicemodel.h
+++ b/tools/libs/devicemodel/include/xendevicemodel.h
@@ -325,6 +325,21 @@ int xendevicemodel_inject_event(
 int xendevicemodel_shutdown(
     xendevicemodel_handle *dmod, domid_t domid, unsigned int reason);
 
+/*
+ * Sets the GFNs at which a page range appears in the domain's address
+ * space.
+ *
+ * @parm dmod a handle to an open devicemodel interface.
+ * @parm domid the domain id to be serviced
+ * @parm size Number of GFNs to process
+ * @parm src_gfn Starting GFN of the source mapping page(s)
+ * @parm dst_gfn Starting GFN where the source mapping page(s) should appear.
+ * @return 0 on success, -1 on failure.
+ */
+int xendevicemodel_add_to_physmap(
+    xendevicemodel_handle *dmod, domid_t domid, uint32_t size, uint64_t 
src_gfn,
+    uint64_t dst_gfn);
+
 /**
  * This function restricts the use of this handle to the specified
  * domain.
diff --git a/tools/libs/devicemodel/libxendevicemodel.map 
b/tools/libs/devicemodel/libxendevicemodel.map
index cefd32b..4a19ecb 100644
--- a/tools/libs/devicemodel/libxendevicemodel.map
+++ b/tools/libs/devicemodel/libxendevicemodel.map
@@ -27,3 +27,8 @@ VERS_1.1 {
        global:
                xendevicemodel_shutdown;
 } VERS_1.0;
+
+VERS_1.2 {
+       global:
+               xendevicemodel_add_to_physmap;
+} VERS_1.1;
-- 
2.9.5


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