lkml.org 
[lkml]   [2016]   [Oct]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH v4 2/5] drivers/of: do not add memory for unavailable nodes
On Thu, Oct 6, 2016 at 1:36 PM, Reza Arbab <arbab@linux.vnet.ibm.com> wrote:
> Respect the standard dt "status" property when scanning memory nodes in
> early_init_dt_scan_memory(), so that if the node is unavailable, no
> memory will be added.
>
> The use case at hand is accelerator or device memory, which may be
> unusable until post-boot initialization of the memory link. Such a node
> can be described in the dt as any other, given its status is "disabled".
> Per the device tree specification,
>
> "disabled"
> Indicates that the device is not presently operational, but it
> might become operational in the future (for example, something
> is not plugged in, or switched off).
>
> Once such memory is made operational, it can then be hotplugged.
>
> Signed-off-by: Reza Arbab <arbab@linux.vnet.ibm.com>
> ---
> drivers/of/fdt.c | 3 +++
> 1 file changed, 3 insertions(+)

Acked-by: Rob Herring <robh@kernel.org>

\
 
 \ /
  Last update: 2016-10-11 15:59    [W:0.556 / U:0.024 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site