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authorRamkumar Ramachandra <artagnon@gmail.com>2013-09-27 09:44:46 +0530
committerRichard Weinberger <richard@nod.at>2013-11-17 11:31:48 +0100
commite40f04d040c66d8312ecfaf6091b2da78531276c (patch)
treee6786cca4420e8d7ecdc5cc9a5b62aa7eedad684 /arch/x86/um/Kconfig
parentum: Make kstack_depth_to_print conform to arch/x86 (diff)
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linux-dev-e40f04d040c66d8312ecfaf6091b2da78531276c.zip
arch/um: make it work with defconfig and x86_64
arch/um/defconfig only lists one default configuration, and that applies only to the i386 architecture. Replace it with two minimal configuration files generated using `make savedefconfig`: i386_defconfig and x86_64_defconfig The build scripts now require two updates: 1. um's Kconfig (arch/x86/um/Kconfig) should specify an ARCH_DEFCONFIG section explicitly pointing to these scripts if the required variables are set. Take care to remove the DEFCONFIG_LIST section defined in the included file arch/um/Kconfig.common. 2. um's Makefile (arch/um/Makefile) should set KBUILD_DEFCONFIG properly for the top-level Makefile to pick up. Copy the logic in arch/x86/Makefile to properly pick the defconfig file depending on the actual architecture; except we're working with $SUBARCH here, instead of $ARCH. Now, you can do: $ ARCH=um make defconfig $ ARCH=um make and successfully build User-Mode Linux on an x86_64 box in default configuration. Cc: Richard Weinberger <richard@nod.at> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to '')
-rw-r--r--arch/x86/um/Kconfig5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/um/Kconfig b/arch/x86/um/Kconfig
index 14ef8d1dbc33..ed56a1c4ae73 100644
--- a/arch/x86/um/Kconfig
+++ b/arch/x86/um/Kconfig
@@ -31,6 +31,11 @@ config X86_64
def_bool 64BIT
select MODULES_USE_ELF_RELA
+config ARCH_DEFCONFIG
+ string
+ default "arch/um/configs/i386_defconfig" if X86_32
+ default "arch/um/configs/x86_64_defconfig" if X86_64
+
config RWSEM_XCHGADD_ALGORITHM
def_bool 64BIT