Move lguest guest support to arch/x86.

Lguest has two sides: host support (to launch guests) and guest
support (replacement boot path and paravirt_ops).  This moves the
guest side to arch/x86/lguest where it's closer to related code.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andi Kleen <ak@suse.de>

7 files changed, 17 insertions, 11 deletions

diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index 3523e82c8412..5bed8be34ba5 100644
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -257,14 +257,8 @@ config VMI
           at the moment), by linking the kernel to a GPL-ed ROM module
           provided by the hypervisor.
 
-config LGUEST_GUEST
-        bool "Lguest guest support"
-        select PARAVIRT
-        depends on !X86_PAE
-        help
-          Lguest is a tiny in-kernel hypervisor.  Selecting this will
-          allow your kernel to boot under lguest.  This option will increase
-          your kernel size by about 6k.  If in doubt, say N.
+source "arch/x86/lguest/Kconfig"
+
 endif
 
 config ACPI_SRAT
diff --git a/arch/i386/Makefile b/arch/i386/Makefile
index b88e47ca3032..b81cb64d48e5 100644
--- a/arch/i386/Makefile
+++ b/arch/i386/Makefile
@@ -99,6 +99,9 @@ core-$(CONFIG_X86_ES7000)	:= arch/x86/mach-es7000/
 # Xen paravirtualization support
 core-$(CONFIG_XEN)              += arch/x86/xen/
 
+# lguest paravirtualization support
+core-$(CONFIG_LGUEST_GUEST)     += arch/x86/lguest/
+
 # default subarch .h files
 mflags-y += -Iinclude/asm-x86/mach-default
 
diff --git a/arch/x86/lguest/Kconfig b/arch/x86/lguest/Kconfig
new file mode 100644
index 000000000000..0fabf87db998
--- /dev/null
+++ b/arch/x86/lguest/Kconfig
@@ -0,0 +1,8 @@
+config LGUEST_GUEST
+        bool "Lguest guest support"
+        select PARAVIRT
+        depends on !X86_PAE
+        help
+          Lguest is a tiny in-kernel hypervisor.  Selecting this will
+          allow your kernel to boot under lguest.  This option will increase
+          your kernel size by about 6k.  If in doubt, say N.
diff --git a/arch/x86/lguest/Makefile b/arch/x86/lguest/Makefile
new file mode 100644
index 000000000000..27f0c9ed7f60
--- /dev/null
+++ b/arch/x86/lguest/Makefile
@@ -0,0 +1 @@
+obj-y           := i386_head.o boot.o
diff --git a/drivers/lguest/lguest.c b/arch/x86/lguest/boot.c
index 8e9e485a5cfa..8e9e485a5cfa 100644
--- a/drivers/lguest/lguest.c
+++ b/arch/x86/lguest/boot.c
diff --git a/drivers/lguest/lguest_asm.S b/arch/x86/lguest/i386_head.S
index 1ddcd5cd20f6..6d7a74f07c41 100644
--- a/drivers/lguest/lguest_asm.S
+++ b/arch/x86/lguest/i386_head.S
@@ -16,7 +16,7 @@
 .section .init.text, "ax", @progbits
 .ascii "GenuineLguest"
         /* Set up initial stack. */
-        movl $(init_thread_union+THREAD_SIZE),%esp
+        movl $(init_thread_union+THREAD_SIZE),%esp
         movl %esi, %eax
         addl $__PAGE_OFFSET, %eax
         jmp lguest_init
diff --git a/drivers/lguest/Makefile b/drivers/lguest/Makefile
index e5047471c334..2db98c233e54 100644
--- a/drivers/lguest/Makefile
+++ b/drivers/lguest/Makefile
@@ -1,5 +1,5 @@
-# Guest requires the paravirt_ops replacement and the bus driver.
-obj-$(CONFIG_LGUEST_GUEST) += lguest.o lguest_asm.o lguest_bus.o
+# Guest requires the bus driver.
+obj-$(CONFIG_LGUEST_GUEST) += lguest_bus.o
 
 # Host requires the other files, which can be a module.
 obj-$(CONFIG_LGUEST)    += lg.o