tree dda32f8316a28cdf2592c0a0b2de9b6903d556bb
parent d98b15db376b9cc35f74fd2bd432b9fc287a5999
author Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 1317316002 -0400
committer Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 1319058211 -0400

xen/enlighten: Fix compile warnings and set cx to known value.

We get:
linux/arch/x86/xen/enlighten.c: In function ‘xen_start_kernel’:
linux/arch/x86/xen/enlighten.c:226: warning: ‘cx’ may be used uninitialized in this function
linux/arch/x86/xen/enlighten.c:240: note: ‘cx’ was declared here

and the cx is really not set but passed in the xen_cpuid instruction
which masks the value with returned masked_ecx from cpuid. This
can potentially lead to invalid data being stored in cx.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>