[Xen-changelog] [xen-unstable] [LIBXC] Handle trace-buffer cpumap endianness.

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Date 1169217677 0
# Node ID 1a45828882e9b49e4c5927541ea336ecd24c041b
# Parent  cd532c9351fc746ac368bbd07180cfffc95ad9f0
[LIBXC] Handle trace-buffer cpumap endianness.
Original patch from Jimi Xenidis <jimix@xxxxxxxxxxxxxx>
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
 tools/libxc/xc_tbuf.c |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diff -r cd532c9351fc -r 1a45828882e9 tools/libxc/xc_tbuf.c
--- a/tools/libxc/xc_tbuf.c     Fri Jan 19 14:36:12 2007 +0000
+++ b/tools/libxc/xc_tbuf.c     Fri Jan 19 14:41:17 2007 +0000
@@ -96,15 +96,19 @@ int xc_tbuf_set_cpu_mask(int xc_handle, 
 {
     DECLARE_SYSCTL;
     int ret = -1;
+    uint64_t mask64 = mask;
+    uint8_t bytemap[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;
+    bitmap_64_to_byte(bytemap, &mask64, sizeof (mask64));
 
-    if ( lock_pages(&mask, sizeof(mask)) != 0 )
+    set_xen_guest_handle(sysctl.u.tbuf_op.cpu_mask.bitmap, bytemap);
+    sysctl.u.tbuf_op.cpu_mask.nr_cpus = sizeof(bytemap) * 8;
+
+    if ( lock_pages(&bytemap, sizeof(bytemap)) != 0 )
     {
         PERROR("Could not lock memory for Xen hypercall");
         goto out;
@@ -112,7 +116,7 @@ int xc_tbuf_set_cpu_mask(int xc_handle, 
 
     ret = do_sysctl(xc_handle, &sysctl);
 
-    unlock_pages(&mask, sizeof(mask));
+    unlock_pages(&bytemap, sizeof(bytemap));
 
  out:
     return ret;

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