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authorBorislav Petkov <bp@alien8.de>2013-05-22 16:46:39 +0200
committerIngo Molnar <mingo@kernel.org>2013-05-28 12:11:32 +0200
commit46ff53874bd935ab9955dee56d60212857e89bf3 (patch)
tree068d7d512970bb3c2feb011102f620869f25c061 /arch/x86/Makefile
parente4aa937ec75df0eea0bee03bffa3303ad36c986b (diff)
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x86, platform, kvm, kconfig: Turn existing .config's into KVM-capable configs
Add an config file snippet which enables additional options useful for running the kernel in a kvm guest. When you execute 'make kvmconfig' it merges those options with an already existing user config before you build the kernel. Based on an patch from the external lkvm tree. Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Michal Marek <mmarek@suse.cz> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: penberg@kernel.org Cc: levinsasha928@gmail.com Cc: mtosatti@redhat.com Cc: fengguang.wu@intel.com Link: http://lkml.kernel.org/r/20130522144638.GB15085@pd.tnic Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/Makefile')
-rw-r--r--arch/x86/Makefile6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 5c477260294f..91ee171f1cff 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -220,6 +220,11 @@ archclean:
$(Q)$(MAKE) $(clean)=$(boot)
$(Q)$(MAKE) $(clean)=arch/x86/tools
+kvmconfig:
+ $(if $(wildcard $(objtree)/.config),, $(error You need an existing .config for this target))
+ $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m -O $(objtree) $(objtree)/.config arch/x86/configs/kvm_guest.config
+ $(Q)yes "" | $(MAKE) oldconfig
+
define archhelp
echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
echo ' install - Install kernel using'
@@ -233,4 +238,5 @@ define archhelp
echo ' bzdisk/fdimage*/isoimage also accept:'
echo ' FDARGS="..." arguments for the booted kernel'
echo ' FDINITRD=file initrd for the booted kernel'
+ echo ' kvmconfig - Enable additional options for guest kernel support'
endef