[Xen-changelog] [xen-unstable] sysctl: Make meaning of max_cpu_index field clearer.

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

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1278956010 -3600
# Node ID e9331523d2d1dab1ef193eeaf21ddc22d8c5a925
# Parent  c41211b25b44a9df6ca9c62c22200a0df3be69a7
sysctl: Make meaning of max_cpu_index field clearer.

Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
---
 xen/include/public/sysctl.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff -r c41211b25b44 -r e9331523d2d1 xen/include/public/sysctl.h
--- a/xen/include/public/sysctl.h       Mon Jul 12 18:30:26 2010 +0100
+++ b/xen/include/public/sysctl.h       Mon Jul 12 18:33:30 2010 +0100
@@ -476,8 +476,8 @@ struct xen_sysctl_topologyinfo {
      * each cpu.
      * If a cpu has no core/socket/node information (e.g., cpu not present) 
      * then the sentinel value ~0u is written.
-     * The size of this array is specified by the caller in @max_cpu_index.
-     * If the actual @max_cpu_index is smaller than the array then the trailing
+     * The size of this array is specified by the caller (@max_cpu_index+1).
+     * If the array has more than @max_cpu_index+1 elements then the trailing
      * elements of the array will not be written by the sysctl.
      */
     XEN_GUEST_HANDLE_64(uint32) cpu_to_core;

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