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reclaim_super
2012 Jun 27
0
Re: [PATCH 2 of 4] xen, pod: Zero-check recently populated pages (checklast)
...d-off-by: George Dunlap <george.dunlap@eu.citrix.com>
>
> diff --git a/xen/arch/x86/mm/p2m-pod.c b/xen/arch/x86/mm/p2m-pod.c
> --- a/xen/arch/x86/mm/p2m-pod.c
> +++ b/xen/arch/x86/mm/p2m-pod.c
> @@ -909,6 +909,27 @@ p2m_pod_emergency_sweep_super(struct p2m
> p2m->pod.reclaim_super = i ? i - SUPERPAGE_PAGES : 0;
> }
>
> +/* When populating a new superpage, look at recently populated superpages
> + * hoping that they''ve been zeroed. This will snap up zeroed pages as
> soon as
> + * the guest OS is done with them. */
> +static void
> +p2m_po...