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

On Tue, 10 Feb 2015, Luis R. Rodriguez wrote:

> From: "Luis R. Rodriguez" <mcgrof@xxxxxxxx>
> 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.

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