On Thu, 28 Jul 2016, Julien Grall wrote:
> Use the level and the entry to know whether an entry is a superpage.
> A superpage can only happen below level 3.
>
> Signed-off-by: Julien Grall <julien.gr...@arm.com>
Reviewed-by: Stefano Stabellini <sstabell...@kernel.org>
> xen/arch/arm/p2m.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c
> index ca2f1b0..c93e554 100644
> --- a/xen/arch/arm/p2m.c
> +++ b/xen/arch/arm/p2m.c
> @@ -57,6 +57,11 @@ static inline bool_t p2m_mapping(lpae_t pte)
> return p2m_valid(pte) && !pte.p2m.table;
> }
>
> +static inline bool_t p2m_is_superpage(lpae_t pte, unsigned int level)
> +{
> + return (level < 3) && p2m_mapping(pte);
> +}
>
> static inline void p2m_write_lock(struct p2m_domain *p2m)
> {
> write_lock(&p2m->lock);
> --
> 1.9.1
>
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