Re: [PATCH v2 17/23] xen/arm: implement alloc/free_xenballooned_pages with alloc_pages/kfree

Konrad Rzeszutek Wilk
2012-08-07T18:41:17Z

On Mon, Aug 06, 2012 at 03:27:20PM +0100, Stefano Stabellini wrote:
> Only until we get the balloon driver to work.

OK. Acked-by be.
>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> ---
> arch/arm/xen/enlighten.c | 18 ++++++++++++++++++
> 1 files changed, 18 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
> index 87b17f0..c244583 100644
> --- a/arch/arm/xen/enlighten.c
> +++ b/arch/arm/xen/enlighten.c
> @@ -140,3 +140,21 @@ static int __init xen_init_events(void)
> return 0;
> }
> postcore_initcall(xen_init_events);
> +
> +/* XXX: only until balloon is properly working */
> +int alloc_xenballooned_pages(int nr_pages, struct page **pages, bool highmem)
> +{
> + *pages = alloc_pages(highmem ? GFP_HIGHUSER : GFP_KERNEL,
> + get_order(nr_pages));
> + if (*pages == NULL)
> + return -ENOMEM;
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(alloc_xenballooned_pages);
> +
> +void free_xenballooned_pages(int nr_pages, struct page **pages)
> +{
> + kfree(*pages);
> + *pages = NULL;
> +}
> +EXPORT_SYMBOL_GPL(free_xenballooned_pages);
> --
> 1.7.2.5