linux-kernel - Re: [opensuse-kernel] Re: [RFC] Simplifying kernel configuration for distro issues

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Message-ID: <20120714124332.GA4093@moon>
Date:	Sat, 14 Jul 2012 16:43:32 +0400
From:	Cyrill Gorcunov <gorcunov@...nvz.org>
To:	Pekka Enberg <penberg@...nel.org>
Cc:	Borislav Petkov <borislav.petkov@....com>,
	richard -rw- weinberger <richard.weinberger@...il.com>,
	"Myklebust, Trond" <Trond.Myklebust@...app.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Dave Jones <davej@...hat.com>,
	Greg Kroah-Hartman <greg@...ah.com>,
	Ubuntu Kernel Team <kernel-team@...ts.ubuntu.com>,
	Debian Kernel Team <debian-kernel@...ts.debian.org>,
	OpenSUSE Kernel Team <opensuse-kernel@...nsuse.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Sasha Levin <levinsasha928@...il.com>,
	Asias He <asias.hejun@...il.com>
Subject: Re: [opensuse-kernel] Re: [RFC] Simplifying kernel configuration for
 distro issues

On Sat, Jul 14, 2012 at 03:12:05PM +0300, Pekka Enberg wrote:
> On Sat, Jul 14, 2012 at 1:37 PM, Borislav Petkov <bp@...en8.de> wrote:
> > On Fri, Jul 13, 2012 at 11:41:21PM +0200, richard -rw- weinberger wrote:
> >> On Fri, Jul 13, 2012 at 10:54 PM, Myklebust, Trond
> >> <Trond.Myklebust@...app.com> wrote:
> >> > We could at least make selection of a minimal set of drivers for the
> >> > more common virtualised platforms a lot easier.
> >> > Right now, you need to hunt through 30+ different menus in order to find
> >> > what you need to run in a basic KVM virtual machine...
> >>
> >> Yes, every time I build a kernel to be used on KVM I forget something. :-\
> >>
> >> We could introduce a section in Kconfig which contains selections for
> >> common use cases.
> >> E.g. as Linus requested for minimal distro requirements but also
> >> selections for various common
> >> guest configurations.
> >
> > +1.
> >
> > Same experience with building a kvm kernel so I couldn't agree more.
> 
> We have "make kvmconfig" in the KVM tool tree that pretty much does
> that automatically. There's nothing tools/kvm specific about it so I
> guess you could merge that separately.

Yup, "make kvmconfig" does things right but I guess a general mechanism
might be preferred here :)

Look, if (at the moment) I'm going to nconfig and virt. section, I see

Virtualization
  Kernel-based Virtual Machine (KVM) support
    KVM for Intel processors support
    KVM for AMD processors support
    Audit KVM MMU
  Host kernel accelerator for virtio net (EXPERIMENTAL)

and everytime I'm here I need to remember where to search for
virtio devices I would like to include into config. Though I
expect to see in this secrion everything related to virtualization
and have a way to turn on virtio-ring and etc.

For example to enable "PCI driver for virtio devices" I need to
go to Device Drivers -> Virtio drivers, while I think it would
be great to have everything virt. related in Virtualization
section.

(note, I know how to enable all this and where to lookup for
 this entries of course, but I guess for regular users it
 would be easier to enable various virt. features if they
 are gathered in one place)

	Cyrill
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