linux-kernel - [PATCH] make KVM selectable again

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Date:	Sat, 09 Feb 2008 12:59:15 -0800
From:	Dave Hansen <haveblue@...ibm.com>
To:	Avi Kivity <avi@...o.co.il>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	kvm-devel <kvm-devel@...ts.sourceforge.net>,
	Sam Ravnborg <sam@...nborg.org>
Subject: [PATCH] make KVM selectable again

Current git for me (b1d0e4f535e10775cffde922208b49629169aeaa) doesn't
let me build KVM.  In fact, I don't seem to have *ANY* kvm-related
symbols in my .config at all.

I've verified that arch/x86/kvm/Kconfig was getting run by putting some
comments in it.  It seems to me like just putting:

	config HAVE_KVM
	       bool

isn't letting anything come into my .config at all.  I'm not sure why we
do that, and then have:

	select HAVE_KVM

in arch/x86/Kconfig.

This patch just defines HAVE_KVM in the x86 Kconfig and is done with it.
Seems to work for me.

Was there some reason that it was done this way?  Was it ever tested?

-- Dave

Signed-off-by: Dave Hansen <haveblue@...ibm.com>

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 65a70b7..cbbf35d 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -115,7 +115,8 @@ config ARCH_HAS_CPU_RELAX
 config HAVE_SETUP_PER_CPU_AREA
 	def_bool X86_64

-select HAVE_KVM
+config HAVE_KVM
+	def_bool y

 config ARCH_HIBERNATION_POSSIBLE
 	def_bool y
diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 41962e7..f2177ec 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -1,8 +1,6 @@
 #
 # KVM configuration
 #
-config HAVE_KVM
-       bool

 menuconfig VIRTUALIZATION
 	bool "Virtualization"

--
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