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

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Date:	Thu, 15 Jan 2015 10:47:01 +0000
From:	Stefano Stabellini <stefano.stabellini@...citrix.com>
To:	"Luis R. Rodriguez" <mcgrof@...not-panic.com>
CC:	<hpa@...or.com>, <josh@...htriplett.org>, <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>, <rientjes@...gle.com>,
	<mcgrof@...e.com>, Borislav Petkov <bp@...e.de>,
	Pekka Enberg <penberg@...nel.org>,
	Michal Marek <mmarek@...e.cz>,
	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 2/2] x86, arm, platform, xen, kconfig: add xen defconfig
 helper

On Wed, 14 Jan 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.
> 
> Cc: Josh Triplett <josh@...htriplett.org>
> Cc: Borislav Petkov <bp@...e.de>
> Cc: Pekka Enberg <penberg@...nel.org>
> Cc: David Rientjes <rientjes@...gle.com>
> Cc: Michal Marek <mmarek@...e.cz>
> Cc: Randy Dunlap <rdunlap@...radead.org>
> Cc: penberg@...nel.org
> Cc: levinsasha928@...il.com
> Cc: mtosatti@...hat.com
> Cc: fengguang.wu@...el.com
> Cc: David Vrabel <david.vrabel@...rix.com>
> Cc: Ian Campbell <Ian.Campbell@...rix.com>
> Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
> Cc: xen-devel@...ts.xenproject.org
> Acked-by: Julien Grall <julien.grall@...aro.org>
> Reviewed-by: Josh Triplett <josh@...htriplett.org>
> Signed-off-by: Luis R. Rodriguez <mcgrof@...e.com>

Acked-by: Stefano Stabellini <stefano.stabellini@...citrix.com>


>  arch/x86/configs/xen.config | 10 ++++++++++
>  kernel/configs/xen.config   | 26 ++++++++++++++++++++++++++
>  scripts/kconfig/Makefile    |  5 +++++
>  3 files changed, 41 insertions(+)
>  create mode 100644 arch/x86/configs/xen.config
>  create mode 100644 kernel/configs/xen.config
> 
> diff --git a/arch/x86/configs/xen.config b/arch/x86/configs/xen.config
> new file mode 100644
> index 0000000..fa7d214
> --- /dev/null
> +++ b/arch/x86/configs/xen.config
> @@ -0,0 +1,10 @@
> +# x86 xen specific config options
> +CONFIG_XEN_PVHVM=y
> +CONFIG_XEN_MAX_DOMAIN_MEMORY=500
> +CONFIG_XEN_SAVE_RESTORE=y
> +# CONFIG_XEN_DEBUG_FS is not set
> +CONFIG_XEN_PVH=y
> +CONFIG_XEN_MCE_LOG=y
> +CONFIG_PCI_XEN=y
> +CONFIG_XEN_PCIDEV_FRONTEND=m
> +CONFIG_XEN_ACPI_PROCESSOR=m
> diff --git a/kernel/configs/xen.config b/kernel/configs/xen.config
> new file mode 100644
> index 0000000..476fcf0
> --- /dev/null
> +++ b/kernel/configs/xen.config
> @@ -0,0 +1,26 @@
> +# generic config
> +CONFIG_XEN=y
> +CONFIG_XEN_DOM0=y
> +CONFIG_XEN_BLKDEV_FRONTEND=m
> +CONFIG_XEN_BLKDEV_BACKEND=m
> +CONFIG_XEN_NETDEV_FRONTEND=m
> +CONFIG_XEN_NETDEV_BACKEND=m
> +CONFIG_INPUT_XEN_KBDDEV_FRONTEND=y
> +CONFIG_HVC_XEN=y
> +CONFIG_HVC_XEN_FRONTEND=y
> +CONFIG_XEN_WDT=m
> +CONFIG_XEN_FBDEV_FRONTEND=y
> +CONFIG_XEN_BALLOON=y
> +CONFIG_XEN_BALLOON_MEMORY_HOTPLUG=y
> +CONFIG_XEN_SCRUB_PAGES=y
> +CONFIG_XEN_DEV_EVTCHN=m
> +CONFIG_XEN_BACKEND=y
> +CONFIG_XENFS=m
> +CONFIG_XEN_COMPAT_XENFS=y
> +CONFIG_XEN_SYS_HYPERVISOR=y
> +CONFIG_XEN_XENBUS_FRONTEND=y
> +CONFIG_XEN_GNTDEV=m
> +CONFIG_XEN_GRANT_DEV_ALLOC=m
> +CONFIG_SWIOTLB_XEN=y
> +CONFIG_XEN_PCIDEV_BACKEND=m
> +CONFIG_XEN_PRIVCMD=m
> diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
> index ff612b0..f4a8f89 100644
> --- a/scripts/kconfig/Makefile
> +++ b/scripts/kconfig/Makefile
> @@ -117,6 +117,10 @@ PHONY += kvmconfig
>  kvmconfig:
>  	$(call mergeconfig,kvm_guest)
>  
> +PHONY += xenconfig
> +xenconfig:
> +	$(call mergeconfig,xen)
> +
>  PHONY += tinyconfig
>  tinyconfig: allnoconfig
>  	$(call mergeconfig,tiny)
> @@ -142,6 +146,7 @@ help:
>  	@echo  '  listnewconfig   - List new options'
>  	@echo  '  olddefconfig	  - Same as silentoldconfig but sets new symbols to their default value'
>  	@echo  '  kvmconfig	  - Enable additional options for kvm guest kernel support'
> +	@echo  '  xenconfig       - Enable additional options for xen dom0 and guest kernel support'
>  	@echo  '  tinyconfig	  - Configure the tiniest possible kernel'
>  
>  # lxdialog stuff
> -- 
> 2.1.1
> 
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