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| author | Ramkumar Ramachandra <artagnon@gmail.com> | 2013-09-27 09:44:46 +0530 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2013-11-17 11:31:48 +0100 |
| commit | e40f04d040c66d8312ecfaf6091b2da78531276c (patch) | |
| tree | e6786cca4420e8d7ecdc5cc9a5b62aa7eedad684 /arch/x86/um | |
| parent | e96d1c3695d6f5fde010d27e2a245a6656de688c (diff) | |
| download | talos-obmc-linux-e40f04d040c66d8312ecfaf6091b2da78531276c.tar.gz talos-obmc-linux-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 'arch/x86/um')
| -rw-r--r-- | arch/x86/um/Kconfig | 5 |
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 |
