linux-kernel - Re: [PATCH v3 RESEND] 2/2] x86, arm, platform, xen, kconfig: add xen defconfig helper

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Date:	Wed, 11 Feb 2015 02:08:35 +0100
From:	"Luis R. Rodriguez" <mcgrof@...e.com>
To:	David Rientjes <rientjes@...gle.com>
Cc:	"Luis R. Rodriguez" <mcgrof@...not-panic.com>,
	Andrew Morton <akpm@...ux-foundation.org>, mingo@...hat.com,
	tglx@...utronix.de, hpa@...or.com, josh@...htriplett.org,
	mmarek@...e.cz, sam@...nborg.org, stefano.stabellini@...citrix.com,
	bpoirier@...e.de, x86@...nel.org, kvm@...r.kernel.org,
	xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
	julien.grall@...aro.org, Borislav Petkov <bp@...e.de>,
	Pekka Enberg <penberg@...nel.org>,
	Randy Dunlap <rdunlap@...radead.org>, levinsasha928@...il.com,
	mtosatti@...hat.com, fengguang.wu@...el.com,
	David Vrabel <david.vrabel@...rix.com>,
	Ian Campbell <Ian.Campbell@...rix.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Subject: Re: [PATCH v3 RESEND] 2/2] x86, arm, platform, xen, kconfig: add
	xen defconfig helper

On Tue, Feb 10, 2015 at 04:49:13PM -0800, David Rientjes wrote:
> On Tue, 10 Feb 2015, Luis R. Rodriguez wrote:
> 
> > From: "Luis R. Rodriguez" <mcgrof@...e.com>
> > 
> > This lets you build a kernel which can support xen dom0
> > or xen guests by just using:
> > 
> >    make xenconfig
> > 
> > on both x86 and arm64 kernels. This also splits out the
> > options which are available currently to be built with x86
> > and 'make ARCH=arm64' under a shared config.
> > 
> > Technically xen supports a dom0 kernel and also a guest
> > kernel configuration but upon review with the xen team
> > since we don't have many dom0 options its best to just
> > combine these two into one.
> > 
> 
> This doesn't work because neither CONFIG_HYPERVISOR_GUEST in 
> arch/x86/configs/xen.config nor CONFIG_PARAVIRT in 
> kernel/configs/xen.config get enabled.
> 
> make kvmconfig does this appropriately.
> 
> You can test this with make {allno,def}config; make xenconfig.  Notice 
> there's no difference with your patchset.

Thanks, I'll fix.

 Luis
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