Export page offline hypercalls to user space tools.

Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>

1 files changed, 100 insertions, 0 deletions

diff --git a/tools/libxc/xc_offline_page.c b/tools/libxc/xc_offline_page.c
new file mode 100644
index 0000000000..5561f5c96f
--- /dev/null
+++ b/tools/libxc/xc_offline_page.c
@@ -0,0 +1,100 @@
+/******************************************************************************
+ * xc_offline_page.c
+ *
+ * Helper functions to offline/online one page
+ *
+ * Copyright (c) 2003, K A Fraser.
+ * Copyright (c) 2009, Intel Corporation.
+ */
+
+#include <inttypes.h>
+#include <time.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/time.h>
+
+#include "xc_private.h"
+#include "xc_dom.h"
+#include "xg_private.h"
+#include "xg_save_restore.h"
+
+int xc_mark_page_online(int xc, unsigned long start,
+                        unsigned long end, uint32_t *status)
+{
+    DECLARE_SYSCTL;
+    int ret = -1;
+
+    if ( !status || (end < start) )
+        return -EINVAL;
+
+    if (lock_pages(status, sizeof(uint32_t)*(end - start + 1)))
+    {
+        ERROR("Could not lock memory for xc_mark_page_online\n");
+        return -EINVAL;
+    }
+
+    sysctl.cmd = XEN_SYSCTL_page_offline_op;
+    sysctl.u.page_offline.start = start;
+    sysctl.u.page_offline.cmd = sysctl_page_online;
+    sysctl.u.page_offline.end = end;
+    set_xen_guest_handle(sysctl.u.page_offline.status, status);
+    ret = xc_sysctl(xc, &sysctl);
+
+    unlock_pages(status, sizeof(uint32_t)*(end - start + 1));
+
+    return ret;
+}
+
+int xc_mark_page_offline(int xc, unsigned long start,
+                          unsigned long end, uint32_t *status)
+{
+    DECLARE_SYSCTL;
+    int ret = -1;
+
+    if ( !status || (end < start) )
+        return -EINVAL;
+
+    if (lock_pages(status, sizeof(uint32_t)*(end - start + 1)))
+    {
+        ERROR("Could not lock memory for xc_mark_page_offline");
+        return -EINVAL;
+    }
+
+    sysctl.cmd = XEN_SYSCTL_page_offline_op;
+    sysctl.u.page_offline.start = start;
+    sysctl.u.page_offline.cmd = sysctl_page_offline;
+    sysctl.u.page_offline.end = end;
+    set_xen_guest_handle(sysctl.u.page_offline.status, status);
+    ret = xc_sysctl(xc, &sysctl);
+
+    unlock_pages(status, sizeof(uint32_t)*(end - start + 1));
+
+    return ret;
+}
+
+int xc_query_page_offline_status(int xc, unsigned long start,
+                                 unsigned long end, uint32_t *status)
+{
+    DECLARE_SYSCTL;
+    int ret = -1;
+
+    if ( !status || (end < start) )
+        return -EINVAL;
+
+    if (lock_pages(status, sizeof(uint32_t)*(end - start + 1)))
+    {
+        ERROR("Could not lock memory for xc_query_page_offline_status\n");
+        return -EINVAL;
+    }
+
+    sysctl.cmd = XEN_SYSCTL_page_offline_op;
+    sysctl.u.page_offline.start = start;
+    sysctl.u.page_offline.cmd = sysctl_query_page_offline;
+    sysctl.u.page_offline.end = end;
+    set_xen_guest_handle(sysctl.u.page_offline.status, status);
+    ret = xc_sysctl(xc, &sysctl);
+
+    unlock_pages(status, sizeof(uint32_t)*(end - start + 1));
+
+    return ret;
+}