[Xen-devel] [PATCH] [LIBXC] create PowerPC-specific alloc_real_mode_area memory op

[Hollis Blanchard <hollisb@xxxxxxxxxx>]

# HG changeset patch
# User Hollis Blanchard <hollisb@xxxxxxxxxx>
# Date 1158782630 18000
# Node ID a755393bb7331723bcc1971e4a555830897ed40d
# Parent  b46d3d47063ac51343847ec22321276b72a5e591
[LIBXC] create PowerPC-specific alloc_real_mode_area memory op
It doesn't seem to be worth the complexity to create an xc.arch object, so this
xc method is just prefixed with "arch_".

(The actual implementation of xc_alloc_real_mode_area() was accidentally
committed earlier in 38d6cf70e8f258f7f63d3456301f201a13b25958 .)

Signed-off-by: Hollis Blanchard <hollisb@xxxxxxxxxx>

diff -r b46d3d47063a -r a755393bb733 tools/libxc/xenctrl.h
--- a/tools/libxc/xenctrl.h     Wed Sep 20 14:23:32 2006 -0500
+++ b/tools/libxc/xenctrl.h     Wed Sep 20 15:03:50 2006 -0500
@@ -421,6 +421,10 @@ int xc_domain_memory_populate_physmap(in
                                       unsigned int address_bits,
                                       xen_pfn_t *extent_start);
 
+int xc_alloc_real_mode_area(int xc_handle,
+                            uint32_t domid,
+                            unsigned int log);
+
 int xc_domain_translate_gpfn_list(int xc_handle,
                                   uint32_t domid,
                                   unsigned long nr_gpfns,
diff -r b46d3d47063a -r a755393bb733 tools/python/xen/lowlevel/xc/xc.c
--- a/tools/python/xen/lowlevel/xc/xc.c Wed Sep 20 14:23:32 2006 -0500
+++ b/tools/python/xen/lowlevel/xc/xc.c Wed Sep 20 15:03:50 2006 -0500
@@ -732,6 +732,28 @@ static PyObject *pyxc_domain_memory_incr
     return zero;
 }
 
+#ifdef __powerpc__
+static PyObject *pyxc_arch_alloc_real_mode_area(XcObject *self,
+                                                PyObject *args,
+                                                PyObject *kwds)
+{
+    uint32_t dom;
+    unsigned int log;
+
+    static char *kwd_list[] = { "dom", "log", NULL };
+
+    if ( !PyArg_ParseTupleAndKeywords(args, kwds, "ii", kwd_list, 
+                                      &dom, &log) )
+        return NULL;
+
+    if ( xc_alloc_real_mode_area(self->xc_handle, dom, log) )
+        return PyErr_SetFromErrno(xc_error);
+
+    Py_INCREF(zero);
+    return zero;
+}
+#endif
+
 static PyObject *pyxc_domain_ioport_permission(XcObject *self,
                                                PyObject *args,
                                                PyObject *kwds)
@@ -1089,6 +1111,16 @@ static PyMethodDef pyxc_methods[] = {
       " dom [int]: Identifier of domain.\n"
       " mem_kb [long]: .\n"
       "Returns: [int] 0 on success; -1 on error.\n" },
+
+#ifdef __powerpc__
+    { "arch_alloc_real_mode_area", 
+      (PyCFunction)pyxc_arch_alloc_real_mode_area, 
+      METH_VARARGS | METH_KEYWORDS, "\n"
+      "Allocate a domain's real mode area.\n"
+      " dom [int]: Identifier of domain.\n"
+      " log [int]: Specifies the area's size.\n"
+      "Returns: [int] 0 on success; -1 on error.\n" },
+#endif
 
     { "domain_ioport_permission",
       (PyCFunction)pyxc_domain_ioport_permission,
diff -r b46d3d47063a -r a755393bb733 xen/include/public/domctl.h
--- a/xen/include/public/domctl.h       Wed Sep 20 14:23:32 2006 -0500
+++ b/xen/include/public/domctl.h       Wed Sep 20 15:03:50 2006 -0500
@@ -347,6 +347,13 @@ struct xen_domctl_settimeoffset {
 };
 typedef struct xen_domctl_settimeoffset xen_domctl_settimeoffset_t;
 DEFINE_XEN_GUEST_HANDLE(xen_domctl_settimeoffset_t);
+
+#define XEN_DOMCTL_real_mode_area     26
+struct xen_domctl_real_mode_area {
+    uint32_t log; /* log2 of Real Mode Area size */
+};
+typedef struct xen_domctl_real_mode_area xen_domctl_real_mode_area_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domctl_real_mode_area_t);
 
 struct xen_domctl {
     uint32_t cmd;
@@ -373,6 +380,7 @@ struct xen_domctl {
         struct xen_domctl_hypercall_init    hypercall_init;
         struct xen_domctl_arch_setup        arch_setup;
         struct xen_domctl_settimeoffset     settimeoffset;
+        struct xen_domctl_real_mode_area    real_mode_area;
         uint8_t                             pad[128];
     } u;
 };

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