[PATCH 2/3] Architecture independence layer - v0 - basic mechanism

[Christian Ehrhardt <ehrhardt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>]

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[Patch 2/3]
This introduces the Kconfig & Makefile changes as well as creating the 
still empty body of kvm_x86.*

Related part from the 0/3 mail:
- Since architecture will not change at runtime I do not use a arch_ops 
structure
- Instead I used a hidden Kconfig value specifying the kvm architecture 
which then
  influence the make file to link together the generic and the arch 
specific part
  to one kvm module
- I split the code into kvm_main.c (generic) and kvm_x86.h/kvm_x86.c 
(arch portion)

-- 

Grüsse / regards, 
Christian Ehrhardt

IBM Linux Technology Center, Open Virtualization
+49 7031/16-3385
Ehrhardt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org
Ehrhardt-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org

IBM Deutschland Entwicklung GmbH
Vorsitzender des Aufsichtsrats: Johann Weihen 
Geschäftsführung: Herbert Kircher 
Sitz der Gesellschaft: Böblingen
Registergericht: Amtsgericht Stuttgart, HRB 243294


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diff --git a/drivers/kvm/Kconfig b/drivers/kvm/Kconfig
index 445c6e4..63ce7b0 100644
--- a/drivers/kvm/Kconfig
+++ b/drivers/kvm/Kconfig
@@ -3,14 +3,14 @@
 #
 menuconfig VIRTUALIZATION
 	bool "Virtualization"
-	depends on X86
+	depends on X86 || POWERPC
 	default y
 
 if VIRTUALIZATION
 
 config KVM
 	tristate "Kernel-based Virtual Machine (KVM) support"
-	depends on X86 && EXPERIMENTAL
+	depends on EXPERIMENTAL
 	select PREEMPT_NOTIFIERS
 	select ANON_INODES
 	---help---
@@ -27,18 +27,40 @@ config KVM
 
 	  If unsure, say N.
 
+config KVM_X86
+	bool
+
 config KVM_INTEL
 	tristate "KVM for Intel processors support"
-	depends on KVM
+	depends on KVM && X86
+	select KVM_X86
 	---help---
 	  Provides support for KVM on Intel processors equipped with the VT
 	  extensions.
 
 config KVM_AMD
 	tristate "KVM for AMD processors support"
-	depends on KVM
+	depends on KVM && X86
+	select KVM_X86
 	---help---
 	  Provides support for KVM on AMD processors equipped with the AMD-V
 	  (SVM) extensions.
 
+config KVM_EMBEDDED_POWERPC
+	bool
+
+config KVM_POWERPC_440
+	tristate "KVM for embedded PowerPC 440 cores"
+	depends on KVM && POWERPC
+	select KVM_EMBEDDED_POWERPC
+	---help---
+	  Provides support for KVM on embedded PowerPC 440 cores
+
+config KVM_POWERPC_E500
+	tristate "KVM for embedded PowerPC e500 cores"
+	depends on KVM && POWERPC
+	select KVM_EMBEDDED_POWERPC
+	---help---
+	  Provides support for KVM on embedded PowerPC e500 cores
+
 endif # VIRTUALIZATION
diff --git a/drivers/kvm/Makefile b/drivers/kvm/Makefile
index c0a789f..843fe08 100644
--- a/drivers/kvm/Makefile
+++ b/drivers/kvm/Makefile
@@ -2,9 +2,19 @@
 # Makefile for Kernel-based Virtual Machine module
 #
 
-kvm-objs := kvm_main.o mmu.o x86_emulate.o
-obj-$(CONFIG_KVM) += kvm.o
+kvm-objs := kvm_main.o
+
+ifeq ($(CONFIG_KVM_X86),y)
+kvm-objs += kvm_x86.o mmu.o x86_emulate.o
+
 kvm-intel-objs = vmx.o
 obj-$(CONFIG_KVM_INTEL) += kvm-intel.o
 kvm-amd-objs = svm.o
 obj-$(CONFIG_KVM_AMD) += kvm-amd.o
+endif
+
+ifeq ($(CONFIG_KVM_EMBEDDED_POWERPC),y)
+kvm-objs += kvm-powerpc.o
+endif
+
+obj-$(CONFIG_KVM) += kvm.o
diff --git a/drivers/kvm/kvm_arch.h b/drivers/kvm/kvm_arch.h
new file mode 100644
index 0000000..6658948
--- /dev/null
+++ b/drivers/kvm/kvm_arch.h
@@ -0,0 +1,14 @@
+#ifndef __KVM_ARCH_H
+#define __KVM_ARCH_H
+
+/*
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ * This is the interface an arch module has to implement because this is what
+ * kvm_main gets linked against depending on arch selection.
+ */
+
+#include <linux/module.h>
+
+#endif
diff --git a/drivers/kvm/kvm_x86.c b/drivers/kvm/kvm_x86.c
new file mode 100644
index 0000000..585f277
--- /dev/null
+++ b/drivers/kvm/kvm_x86.c
@@ -0,0 +1,51 @@
+/*
+ * Kernel-based Virtual Machine driver for Linux
+ *
+ * This module enables machines with Intel VT-x extensions to run virtual
+ * machines without emulation or binary translation.
+ *
+ * Copyright (C) 2006 Qumranet, Inc.
+ *
+ * Authors:
+ *   Avi Kivity   <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
+ *   Yaniv Kamay  <yaniv-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#include "kvm.h"
+#include "kvm_arch.h"
+#include "kvm_x86.h"
+#include "x86_emulate.h"
+#include "segment_descriptor.h"
+
+#include <linux/kvm.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/percpu.h>
+#include <linux/gfp.h>
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
+#include <linux/reboot.h>
+#include <linux/debugfs.h>
+#include <linux/highmem.h>
+#include <linux/file.h>
+#include <linux/miscdevice.h>
+#include <linux/sysdev.h>
+#include <linux/cpu.h>
+#include <linux/sched.h>
+#include <linux/cpumask.h>
+#include <linux/smp.h>
+#include <linux/anon_inodes.h>
+
+#include <asm/processor.h>
+#include <asm/msr.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/desc.h>
+
+MODULE_AUTHOR("Qumranet");
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/kvm/kvm_x86.h b/drivers/kvm/kvm_x86.h
new file mode 100644
index 0000000..021385e
--- /dev/null
+++ b/drivers/kvm/kvm_x86.h
@@ -0,0 +1,9 @@
+#ifndef __KVM_X86_H
+#define __KVM_X86_H
+
+/*
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ */
+
+#endif

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