lkml.org 
[lkml]   [2012]   [Jul]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] [powerpc] Export memory limit via device tree
From
Date
> diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
> index c957b12..0c9695d 100644
> --- a/arch/powerpc/kernel/machine_kexec.c
> +++ b/arch/powerpc/kernel/machine_kexec.c
> @@ -207,6 +207,12 @@ static struct property crashk_size_prop = {
> .value = &crashk_size,
> };
>
> +static struct property memory_limit_prop = {
> + .name = "linux,memory-limit",
> + .length = sizeof(phys_addr_t),
> + .value = &memory_limit,
> +};
> +

AFAIK. phys_addr_t can change size, so instead make it point to a known
fixes size quantity (a u64).

> +
> + /* memory-limit is needed for constructing the crash regions */
> + prop = of_find_property(node, memory_limit_prop.name, NULL);
> + if (prop)
> + prom_remove_property(node, prop);
> +
> + if (memory_limit)
> + prom_add_property(node, &memory_limit_prop);
> +

There's a patch floating around making prom_update_property properly
handle both pre-existing and non-pre-existing props, you should probably
base yourself on top of it. I'm about to stick that patch in powerpc
-next

Cheers,
Ben.




\
 
 \ /
  Last update: 2012-07-11 08:01    [W:0.086 / U:22.888 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site