From: Glauber Costa <gcosta@redhat.com>
Date: Mon, 17 Mar 2008 19:08:40 +0000 (-0300)
Subject: x86: KVM guest: disable clock before rebooting.
X-Git-Tag: v2.6.26-rc1~1028^2~81
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1e977aa12dd4f80688b1f243762212e75c6d7fe8;p=pandora-kernel.git

x86: KVM guest: disable clock before rebooting.

This patch writes 0 (actually, what really matters is that the
LSB is cleared) to the system time msr before shutting down
the machine for kexec.

Without it, we can have a random memory location being written
when the guest comes back

It overrides the functions shutdown, used in the path of kernel_kexec() (sys.c)
and crash_shutdown, used in the path of crash_kexec() (kexec.c)

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
---

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