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Date: Mon, 13 Jan 2014 16:11:38 -0800 From: Dave Hansen <dave@...1.net> To: linux-kernel@...r.kernel.org Cc: x86@...nel.org, Dave Hansen <dave@...1.net>, bp@...e.de, dtor@...are.com, kys@...rosoft.com, haiyangz@...rosoft.com, agraf@...e.de, gleb@...hat.com, pbonzini@...hat.com Subject: [PATCH 1/2] x86 Kconfig: create x86/Kconfig.virt From: Dave Hansen <dave.hansen@...ux.intel.com> Right now, there is a "Enable paravirtualization code" option in the "Processor Features" menu, which means Xen. There is also a group of host-side paravirtualization options specific to KVM under the top-level "Virtualization" menu. I think it makes a lot of sense to group the host and guest side things together, especially since the top-level "Virtualization" menu is so sparsely populated. This creates a new hypervisor-independent arch/x86/Kconfig.virt file, and moves the "Virtualization" menu to be defined in there. Currently CONFIG_VIRTUALIZATION really means "host-side", so create a new config option which matches the guest-side one, and default its value to be what CONFIG_VIRTUALIZATION was set to. This also removes the very counterintuitive references to lguest/vhost code *from* kvm-specific code and removes the silly: depends on HAVE_KVM || X86 dependency. It makes zero sense to have entries defined in arch/x86 depend on x86. Signed-off-by: Dave Hansen <dave.hansen@...ux.intel.com> Cc: Borislav Petkov <bp@...e.de> Cc: Dmitry Torokhov <dtor@...are.com> Cc: K. Y. Srinivasan <kys@...rosoft.com> Cc: Haiyang Zhang <haiyangz@...rosoft.com> Cc: Alexander Graf <agraf@...e.de> Cc: Gleb Natapov <gleb@...hat.com> Cc: Paolo Bonzini <pbonzini@...hat.com> --- linux.git-davehans/arch/x86/Kconfig | 2 +- linux.git-davehans/arch/x86/Kconfig.virt | 25 +++++++++++++++++++++++++ linux.git-davehans/arch/x86/kvm/Kconfig | 19 ------------------- 3 files changed, 26 insertions(+), 20 deletions(-) diff -puN arch/x86/Kconfig~x86-Kconfig-move-paravirt-under-virtualization arch/x86/Kconfig --- linux.git/arch/x86/Kconfig~x86-Kconfig-move-paravirt-under-virtualization 2014-01-13 16:09:29.785875796 -0800 +++ linux.git-davehans/arch/x86/Kconfig 2014-01-13 16:09:29.793876157 -0800 @@ -2416,6 +2416,6 @@ source "security/Kconfig" source "crypto/Kconfig" -source "arch/x86/kvm/Kconfig" +source "arch/x86/Kconfig.virt" source "lib/Kconfig" diff -puN /dev/null arch/x86/Kconfig.virt --- /dev/null 2013-11-27 17:20:18.337162396 -0800 +++ linux.git-davehans/arch/x86/Kconfig.virt 2014-01-13 16:09:29.793876157 -0800 @@ -0,0 +1,25 @@ + +menu "Virtualization" + +config VIRTUALIZATION + bool + +config HYPERVISOR_HOST + bool "Host-Side Features (Linux as the Hypervisor)" + default y if VIRTUALIZATION + ---help--- + Say Y here to get to see options for using your Linux host to run other + operating systems inside virtual machines (guests). + This option alone does not add any kernel code. + + If you say N, all options in this submenu will be skipped and disabled. + +if HYPERVISOR_HOST + +source arch/x86/kvm/Kconfig +source drivers/vhost/Kconfig +source drivers/lguest/Kconfig + +endif # HYPERVISOR_HOST + +endmenu # "Virtualization" diff -puN arch/x86/kvm/Kconfig~x86-Kconfig-move-paravirt-under-virtualization arch/x86/kvm/Kconfig --- linux.git/arch/x86/kvm/Kconfig~x86-Kconfig-move-paravirt-under-virtualization 2014-01-13 16:09:29.787875886 -0800 +++ linux.git-davehans/arch/x86/kvm/Kconfig 2014-01-13 16:09:29.793876157 -0800 @@ -4,19 +4,6 @@ source "virt/kvm/Kconfig" -menuconfig VIRTUALIZATION - bool "Virtualization" - depends on HAVE_KVM || X86 - default y - ---help--- - Say Y here to get to see options for using your Linux host to run other - operating systems inside virtual machines (guests). - This option alone does not add any kernel code. - - If you say N, all options in this submenu will be skipped and disabled. - -if VIRTUALIZATION - config KVM tristate "Kernel-based Virtual Machine (KVM) support" depends on HAVE_KVM @@ -93,9 +80,3 @@ config KVM_DEVICE_ASSIGNMENT If unsure, say Y. -# OK, it's a little counter-intuitive to do this, but it puts it neatly under -# the virtualization menu. -source drivers/vhost/Kconfig -source drivers/lguest/Kconfig - -endif # VIRTUALIZATION _ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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