# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1287650255 -3600
# Node ID 9729034ef96a2247fa913470109299b6b1344e34
# Parent 98b20dffcac0b3b26907af7eafe8a807a78284b6
python xc: use hypercall buffer interface.
Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
diff -r 98b20dffcac0 -r 9729034ef96a tools/python/xen/lowlevel/xc/xc.c
--- a/tools/python/xen/lowlevel/xc/xc.c Thu Oct 21 09:37:35 2010 +0100
+++ b/tools/python/xen/lowlevel/xc/xc.c Thu Oct 21 09:37:35 2010 +0100
@@ -1206,19 +1206,29 @@ static PyObject *pyxc_topologyinfo(XcObj
#define MAX_CPU_INDEX 255
xc_topologyinfo_t tinfo = { 0 };
int i, max_cpu_index;
- PyObject *ret_obj;
+ PyObject *ret_obj = NULL;
PyObject *cpu_to_core_obj, *cpu_to_socket_obj, *cpu_to_node_obj;
- xc_cpu_to_core_t coremap[MAX_CPU_INDEX + 1];
- xc_cpu_to_socket_t socketmap[MAX_CPU_INDEX + 1];
- xc_cpu_to_node_t nodemap[MAX_CPU_INDEX + 1];
+ DECLARE_HYPERCALL_BUFFER(xc_cpu_to_core_t, coremap);
+ DECLARE_HYPERCALL_BUFFER(xc_cpu_to_socket_t, socketmap);
+ DECLARE_HYPERCALL_BUFFER(xc_cpu_to_node_t, nodemap);
- set_xen_guest_handle(tinfo.cpu_to_core, coremap);
- set_xen_guest_handle(tinfo.cpu_to_socket, socketmap);
- set_xen_guest_handle(tinfo.cpu_to_node, nodemap);
+ coremap = xc_hypercall_buffer_alloc(self->xc_handle, coremap,
sizeof(*coremap) * (MAX_CPU_INDEX+1));
+ if ( coremap == NULL )
+ goto out;
+ socketmap = xc_hypercall_buffer_alloc(self->xc_handle, socketmap,
sizeof(*socketmap) * (MAX_CPU_INDEX+1));
+ if ( socketmap == NULL )
+ goto out;
+ nodemap = xc_hypercall_buffer_alloc(self->xc_handle, nodemap,
sizeof(*nodemap) * (MAX_CPU_INDEX+1));
+ if ( nodemap == NULL )
+ goto out;
+
+ xc_set_xen_guest_handle(tinfo.cpu_to_core, coremap);
+ xc_set_xen_guest_handle(tinfo.cpu_to_socket, socketmap);
+ xc_set_xen_guest_handle(tinfo.cpu_to_node, nodemap);
tinfo.max_cpu_index = MAX_CPU_INDEX;
if ( xc_topologyinfo(self->xc_handle, &tinfo) != 0 )
- return pyxc_error_to_exception(self->xc_handle);
+ goto out;
max_cpu_index = tinfo.max_cpu_index;
if ( max_cpu_index > MAX_CPU_INDEX )
@@ -1271,11 +1281,15 @@ static PyObject *pyxc_topologyinfo(XcObj
PyDict_SetItemString(ret_obj, "cpu_to_socket", cpu_to_socket_obj);
Py_DECREF(cpu_to_socket_obj);
-
+
PyDict_SetItemString(ret_obj, "cpu_to_node", cpu_to_node_obj);
Py_DECREF(cpu_to_node_obj);
-
- return ret_obj;
+
+out:
+ xc_hypercall_buffer_free(self->xc_handle, coremap);
+ xc_hypercall_buffer_free(self->xc_handle, socketmap);
+ xc_hypercall_buffer_free(self->xc_handle, nodemap);
+ return ret_obj ? ret_obj : pyxc_error_to_exception(self->xc_handle);
#undef MAX_CPU_INDEX
}
@@ -1285,20 +1299,30 @@ static PyObject *pyxc_numainfo(XcObject
xc_numainfo_t ninfo = { 0 };
int i, j, max_node_index;
uint64_t free_heap;
- PyObject *ret_obj, *node_to_node_dist_list_obj;
+ PyObject *ret_obj = NULL, *node_to_node_dist_list_obj;
PyObject *node_to_memsize_obj, *node_to_memfree_obj;
PyObject *node_to_dma32_mem_obj, *node_to_node_dist_obj;
- xc_node_to_memsize_t node_memsize[MAX_NODE_INDEX + 1];
- xc_node_to_memfree_t node_memfree[MAX_NODE_INDEX + 1];
- xc_node_to_node_dist_t nodes_dist[(MAX_NODE_INDEX+1) * (MAX_NODE_INDEX+1)];
+ DECLARE_HYPERCALL_BUFFER(xc_node_to_memsize_t, node_memsize);
+ DECLARE_HYPERCALL_BUFFER(xc_node_to_memfree_t, node_memfree);
+ DECLARE_HYPERCALL_BUFFER(xc_node_to_node_dist_t, nodes_dist);
- set_xen_guest_handle(ninfo.node_to_memsize, node_memsize);
- set_xen_guest_handle(ninfo.node_to_memfree, node_memfree);
- set_xen_guest_handle(ninfo.node_to_node_distance, nodes_dist);
+ node_memsize = xc_hypercall_buffer_alloc(self->xc_handle, node_memsize,
sizeof(*node_memsize)*(MAX_NODE_INDEX+1));
+ if ( node_memsize == NULL )
+ goto out;
+ node_memfree = xc_hypercall_buffer_alloc(self->xc_handle, node_memfree,
sizeof(*node_memfree)*(MAX_NODE_INDEX+1));
+ if ( node_memfree == NULL )
+ goto out;
+ nodes_dist = xc_hypercall_buffer_alloc(self->xc_handle, nodes_dist,
sizeof(*nodes_dist)*(MAX_NODE_INDEX+1)*(MAX_NODE_INDEX+1));
+ if ( nodes_dist == NULL )
+ goto out;
+
+ xc_set_xen_guest_handle(ninfo.node_to_memsize, node_memsize);
+ xc_set_xen_guest_handle(ninfo.node_to_memfree, node_memfree);
+ xc_set_xen_guest_handle(ninfo.node_to_node_distance, nodes_dist);
ninfo.max_node_index = MAX_NODE_INDEX;
if ( xc_numainfo(self->xc_handle, &ninfo) != 0 )
- return pyxc_error_to_exception(self->xc_handle);
+ goto out;
max_node_index = ninfo.max_node_index;
if ( max_node_index > MAX_NODE_INDEX )
@@ -1363,8 +1387,12 @@ static PyObject *pyxc_numainfo(XcObject
PyDict_SetItemString(ret_obj, "node_to_node_dist",
node_to_node_dist_list_obj);
Py_DECREF(node_to_node_dist_list_obj);
-
- return ret_obj;
+
+out:
+ xc_hypercall_buffer_free(self->xc_handle, node_memsize);
+ xc_hypercall_buffer_free(self->xc_handle, node_memfree);
+ xc_hypercall_buffer_free(self->xc_handle, nodes_dist);
+ return ret_obj ? ret_obj : pyxc_error_to_exception(self->xc_handle);
#undef MAX_NODE_INDEX
}
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