Re: [Xen-devel] [PATCH] xen: balloon: enable for ARM

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Wed, 11 Dec 2013, Ian Campbell wrote:
> Since c275a57f5ec3 "xen/balloon: Set balloon's initial state to number of
> existing RAM pages" the balloon driver appears to work fine on ARM as far as I
> can tell. Prior to that commit it was broken because on ARM RAM doesn't
> typically start at zero, effectively leaving a big MMIO hole at the start.
> This would cause the balloon driver to give away all of RAM at start of day,
> which is rather inconvenient
> 
> It was already enabled (or rather not excluded) on ARM64.
> 
> Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
> Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> Cc: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
> Cc: David Vrabel <david.vrabel@xxxxxxxxxx>
> Cc: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

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

It only makes sense for this patch to go in if the following patch goes
in too:

http://marc.info/?l=xen-devel&m=138678120616388


>  drivers/xen/Kconfig |    1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
> index c794ea1..b9ea2ab 100644
> --- a/drivers/xen/Kconfig
> +++ b/drivers/xen/Kconfig
> @@ -3,7 +3,6 @@ menu "Xen driver support"
>  
>  config XEN_BALLOON
>       bool "Xen memory balloon driver"
> -     depends on !ARM
>       default y
>       help
>         The balloon driver allows the Xen domain to request more memory from
> -- 
> 1.7.10.4
> 

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