[Xen-changelog] [xen-unstable] xenoprof: Make the escape code consistent across 32 and 64-bit xen

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User George Dunlap <george.dunlap@xxxxxxxxxxxxx>
# Date 1327575830 0
# Node ID 1e27e827e6a80b9fe8d59bcd46dbe30ca9bc0692
# Parent  768c932ea8dadd966d58412cae478c4fe26cb9bf
xenoprof: Make the escape code consistent across 32 and  64-bit xen

At the moment, the xenoprof escape code is defined as "~0UL".
Unfortunately, this expands to 0xffffffff on 32-bit systems
and 0xffffffffffffffff on 64-bit systems; with the result that
while 32-on-32 and 64-in-64 work fine, 32-on-64 (also known as
"compat mode") is broken.

This patch makes the definition consistent across architectures.
In so doing, it will break old-32-bit-on-new-Xen, and vice versa;
but this was seen as an acceptable thing to do.

Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
Committed-by: Keir Fraser <keir@xxxxxxx>
---


diff -r 768c932ea8da -r 1e27e827e6a8 xen/include/public/xenoprof.h
--- a/xen/include/public/xenoprof.h     Thu Jan 26 11:03:23 2012 +0000
+++ b/xen/include/public/xenoprof.h     Thu Jan 26 11:03:50 2012 +0000
@@ -68,7 +68,7 @@
 };
 
 /* PC value that indicates a special code */
-#define XENOPROF_ESCAPE_CODE ~0UL
+#define XENOPROF_ESCAPE_CODE (~0ULL)
 /* Transient events for the xenoprof->oprofile cpu buf */
 #define XENOPROF_TRACE_BEGIN 1
 

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