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SubjectRe: [PATCH 11/12] x86 Kconfig: create x86/Kconfig.virt
Il 13/01/2014 20:22, Dave Hansen ha scritto:
> From: Dave Hansen <dave.hansen@linux.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 paravirtualization options specific to KVM under the
> top-level "Virtualization" menu.
>
> This creates a new hypervisor-independent arch/x86/Kconfig.virt
> file, and moves the "Virtualization" menu to be defined in there.
> This also removes the very counterintuitive references to
> lguest/vhost code *from* kvm-specific code.
>
> This also 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@linux.intel.com>
> Cc: Borislav Petkov <bp@suse.de>
> Cc: Dmitry Torokhov <dtor@vmware.com>
> Cc: K. Y. Srinivasan <kys@microsoft.com>
> Cc: Haiyang Zhang <haiyangz@microsoft.com>
> Cc: Alexander Graf <agraf@suse.de>
> Cc: Gleb Natapov <gleb@redhat.com>
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> ---
>
> linux.git-davehans/arch/x86/Kconfig | 2 +-
> linux.git-davehans/arch/x86/Kconfig.virt | 18 ++++++++++++++++++
> linux.git-davehans/arch/x86/kvm/Kconfig | 19 -------------------
> 3 files changed, 19 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 11:11:36.617255854 -0800
> +++ linux.git-davehans/arch/x86/Kconfig 2014-01-13 11:11:36.620255990 -0800

These diff headers are unreadable...

> @@ -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 11:11:36.621256035 -0800
> @@ -0,0 +1,18 @@
> +
> +menuconfig VIRTUALIZATION
> + bool "Virtualization"

Please rename this to "Hypervisor support" or "Virtual guest support" to
avoid confusion with KVM. Note there is a reference to
CONFIG_VIRTUALIZATION in configs/kvm_guest.config.

> + 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
> +
> +source arch/x86/kvm/Kconfig
> +source drivers/vhost/Kconfig
> +source drivers/lguest/Kconfig
> +
> +endif # 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 11:11:36.618255899 -0800
> +++ linux.git-davehans/arch/x86/kvm/Kconfig 2014-01-13 11:11:36.621256035 -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

Definitely a good idea to separate KVM from the virtualization submenu.

> @@ -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
> _
>



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