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    Subject[PATCH v4 17/24] xen/arm: implement alloc/free_xenballooned_pages with alloc_pages/kfree
    Date
    Only until we get the balloon driver to work.

    Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
    Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.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 bad67ad..59bcb96 100644
    --- a/arch/arm/xen/enlighten.c
    +++ b/arch/arm/xen/enlighten.c
    @@ -148,3 +148,21 @@ 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


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