linux-kernel - [PATCH 11/12] x86 Kconfig: create x86/Kconfig.virt

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Message-Id: <20140113192259.5E9DFB02@viggo.jf.intel.com>
Date:	Mon, 13 Jan 2014 11:22:59 -0800
From:	Dave Hansen <dave@...1.net>
To:	linux-kernel@...r.kernel.org
Cc:	x86@...nel.org, Dave Hansen <dave@...1.net>, bp@...e.de,
	dtor@...are.com, kys@...rosoft.com, haiyangz@...rosoft.com,
	agraf@...e.de, gleb@...hat.com, pbonzini@...hat.com
Subject: [PATCH 11/12] x86 Kconfig: create x86/Kconfig.virt


From: Dave Hansen <dave.hansen@...ux.intel.com>

Right now, there is a "Enable paravirtualization code" option in
the "Processor Features" menu, which means Xen.  There is also a
group of paravirtualization options specific to KVM under the
top-level "Virtualization" menu.

This creates a new hypervisor-independent arch/x86/Kconfig.virt
file, and moves the "Virtualization" menu to be defined in there.
This also removes the very counterintuitive references to
lguest/vhost code *from* kvm-specific code.

This also removes the silly:

	depends on HAVE_KVM || X86

dependency.  It makes zero sense to have entries defined in
arch/x86 depend on x86.

Signed-off-by: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: Borislav Petkov <bp@...e.de>
Cc: Dmitry Torokhov <dtor@...are.com>
Cc: K. Y. Srinivasan <kys@...rosoft.com>
Cc: Haiyang Zhang <haiyangz@...rosoft.com>
Cc: Alexander Graf <agraf@...e.de>
Cc: Gleb Natapov <gleb@...hat.com>
Cc: Paolo Bonzini <pbonzini@...hat.com>
---

 linux.git-davehans/arch/x86/Kconfig      |    2 +-
 linux.git-davehans/arch/x86/Kconfig.virt |   18 ++++++++++++++++++
 linux.git-davehans/arch/x86/kvm/Kconfig  |   19 -------------------
 3 files changed, 19 insertions(+), 20 deletions(-)

diff -puN arch/x86/Kconfig~x86-Kconfig-move-paravirt-under-virtualization arch/x86/Kconfig
--- linux.git/arch/x86/Kconfig~x86-Kconfig-move-paravirt-under-virtualization	2014-01-13 11:11:36.617255854 -0800
+++ linux.git-davehans/arch/x86/Kconfig	2014-01-13 11:11:36.620255990 -0800
@@ -2416,6 +2416,6 @@ source "security/Kconfig"
 
 source "crypto/Kconfig"
 
-source "arch/x86/kvm/Kconfig"
+source "arch/x86/Kconfig.virt"
 
 source "lib/Kconfig"
diff -puN /dev/null arch/x86/Kconfig.virt
--- /dev/null	2013-11-27 17:20:18.337162396 -0800
+++ linux.git-davehans/arch/x86/Kconfig.virt	2014-01-13 11:11:36.621256035 -0800
@@ -0,0 +1,18 @@
+
+menuconfig VIRTUALIZATION
+	bool "Virtualization"
+	default y
+	---help---
+	  Say Y here to get to see options for using your Linux host to run other
+	  operating systems inside virtual machines (guests).
+	  This option alone does not add any kernel code.
+
+	  If you say N, all options in this submenu will be skipped and disabled.
+
+if VIRTUALIZATION
+
+source arch/x86/kvm/Kconfig
+source drivers/vhost/Kconfig
+source drivers/lguest/Kconfig
+
+endif # VIRTUALIZATION
diff -puN arch/x86/kvm/Kconfig~x86-Kconfig-move-paravirt-under-virtualization arch/x86/kvm/Kconfig
--- linux.git/arch/x86/kvm/Kconfig~x86-Kconfig-move-paravirt-under-virtualization	2014-01-13 11:11:36.618255899 -0800
+++ linux.git-davehans/arch/x86/kvm/Kconfig	2014-01-13 11:11:36.621256035 -0800
@@ -4,19 +4,6 @@
 
 source "virt/kvm/Kconfig"
 
-menuconfig VIRTUALIZATION
-	bool "Virtualization"
-	depends on HAVE_KVM || X86
-	default y
-	---help---
-	  Say Y here to get to see options for using your Linux host to run other
-	  operating systems inside virtual machines (guests).
-	  This option alone does not add any kernel code.
-
-	  If you say N, all options in this submenu will be skipped and disabled.
-
-if VIRTUALIZATION
-
 config KVM
 	tristate "Kernel-based Virtual Machine (KVM) support"
 	depends on HAVE_KVM
@@ -93,9 +80,3 @@ config KVM_DEVICE_ASSIGNMENT
 
 	  If unsure, say Y.
 
-# OK, it's a little counter-intuitive to do this, but it puts it neatly under
-# the virtualization menu.
-source drivers/vhost/Kconfig
-source drivers/lguest/Kconfig
-
-endif # VIRTUALIZATION
_
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