From: Carsten Otte <cotte@de.ibm.com>
Date: Tue, 25 Mar 2008 17:47:44 +0000 (+0100)
Subject: s390: KVM guest: detect when running on kvm
X-Git-Tag: v2.6.26-rc1~1028^2~59
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fa5877439d5a062d91c3abd5a690483bbdb4268e;p=pandora-kernel.git

s390: KVM guest: detect when running on kvm

This patch adds functionality to detect if the kernel runs under the KVM
hypervisor. A macro MACHINE_IS_KVM is exported for device drivers. This
allows drivers to skip device detection if the systems runs non-virtualized.
We also define a preferred console to avoid having the ttyS0, which is a line
mode only console.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
---

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