[Xen-changelog] Add a commented-out sanity check for lazy fpu switching.

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

# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 07aa5213d8119f9889f49cd79cc9a2a3ae787881
# Parent  eee0489b3a174dd53e56e975bc44c46933697215
Add a commented-out sanity check for lazy fpu switching.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>

diff -r eee0489b3a17 -r 07aa5213d811 
linux-2.6-xen-sparse/arch/xen/i386/kernel/process.c
--- a/linux-2.6-xen-sparse/arch/xen/i386/kernel/process.c       Sat Oct 29 
08:51:35 2005
+++ b/linux-2.6-xen-sparse/arch/xen/i386/kernel/process.c       Sun Oct 30 
08:39:55 2005
@@ -483,6 +483,9 @@
                mcl->args[0] = 1;
                mcl++;
        }
+#if 0 /* lazy fpu sanity check */
+       else BUG_ON(!(read_cr0() & 8));
+#endif
 
        /*
         * Reload esp0, LDT and the page table pointer:

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