[Xen-devel] [PATCH 3/3] [XEN] Handle the uint32_t in the tbuf

[Jimi Xenidis <jimix@xxxxxxxxxxxxxx>]

Signed-off-by: Jimi Xenidis <jimix@xxxxxxxxxxxxxx>

---

diff -r 58d6c9cb95c6 tools/libxc/xc_tbuf.c
--- a/tools/libxc/xc_tbuf.c     Wed Jan 17 14:57:04 2007 -0500
+++ b/tools/libxc/xc_tbuf.c     Wed Jan 17 17:13:10 2007 -0500
@@ -96,15 +96,25 @@ int xc_tbuf_set_cpu_mask(int xc_handle, 
 {
     DECLARE_SYSCTL;
     int ret = -1;
+    uint64_t mask64;
+    uint8_t local[sizeof (mask64)];
 
     sysctl.cmd = XEN_SYSCTL_tbuf_op;
     sysctl.interface_version = XEN_SYSCTL_INTERFACE_VERSION;
     sysctl.u.tbuf_op.cmd  = XEN_SYSCTL_TBUFOP_set_cpu_mask;
 
-    set_xen_guest_handle(sysctl.u.tbuf_op.cpu_mask.bitmap, (uint8_t *)&mask);
-    sysctl.u.tbuf_op.cpu_mask.nr_cpus = sizeof(mask) * 8;
+#ifdef XC_BIG_ENDIAN
+    mask64 = mask;
+#else
+    mask64 = (uint64_t)mask << 32;
+#endif
 
-    if ( lock_pages(&mask, sizeof(mask)) != 0 )
+    bitmap_64_to_byte(local, &mask64, sizeof (mask64));
+
+    set_xen_guest_handle(sysctl.u.tbuf_op.cpu_mask.bitmap, local);
+    sysctl.u.tbuf_op.cpu_mask.nr_cpus = sizeof(local) * 8;
+
+    if ( lock_pages(&local, sizeof(local)) != 0 )
     {
         PERROR("Could not lock memory for Xen hypercall");
         goto out;
@@ -112,7 +122,7 @@ int xc_tbuf_set_cpu_mask(int xc_handle, 
 
     ret = do_sysctl(xc_handle, &sysctl);
 
-    unlock_pages(&mask, sizeof(mask));
+    unlock_pages(&local, sizeof(local));
 
  out:
     return ret;

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