linux-kernel - Re: [PATCH 11/12] x86 Kconfig: create x86/Kconfig.virt

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Date:	Tue, 14 Jan 2014 00:12:45 +0100
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Dave Hansen <dave@...1.net>
CC:	linux-kernel@...r.kernel.org, x86@...nel.org, bp@...e.de,
	dtor@...are.com, kys@...rosoft.com, haiyangz@...rosoft.com,
	agraf@...e.de, gleb@...hat.com
Subject: Re: [PATCH 11/12] x86 Kconfig: create x86/Kconfig.virt

Il 14/01/2014 00:00, Dave Hansen ha scritto:
>> > 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.
> I'm not sure I'm following.  When this gets done, we have a menu that says:
> 
>> >         --- Virtualization                                                                          
>> >         <*>   Kernel-based Virtual Machine (KVM) support                                            
>> >         <*>     KVM for Intel processors support                                                    
>> >         <*>     KVM for AMD processors support
>> >         [*]     Audit KVM MMU                                                                       
>> >         [*]     KVM legacy PCI device assignment support                                            
>> >         < >   Host kernel accelerator for virtio net
>> >         [*]   Linux guest support  --->

Ok, got it now.  The diff headers confused me...

I think this is as confusing as before, perhaps worse because it is not
clear that Linux guest support is not limited to KVM.  If you really
want a Virtualization menu, you have to clearly separate the guest and host:

    --- Virtualization
        Linux guest support  --->
        Virtualization host support  --->

with KVM and vhost under the second item.

> So this new menu grouping includes both KVM, Xen, and lguest.  It
> includes both the host-side and guest-side support.  Are you suggesting
> that we separate out host and guest somehow?

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