lkml.org 
[lkml]   [2023]   [Apr]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v3 0/1] Fix Random Kernel panic from when fail to reserve memory
Date
I am trying to fix an issue where the kernel panics randomly on my Vim3
board. The problem happens when the ARM Trusted Firmware memory is not
removed from the available ram.

This happens because my u-boot provides /memreserve/, but it doesn't flag
it as nomap. And the kernel scan of /reserved-memory node can't map as
nomap as the region is already reserved.

The idea now is to scan /memreserve/ after /reserved-memory node, and
/memreserve/ will skip regions already reserved by /reserved-memory node.

Previous Threads:
#regzbot link: https://lore.kernel.org/linux-arm-kernel/40ca11f84b7cdbfb9ad2ddd480cb204a@agner.ch/#regzbot
#regzbot link: https://lore.kernel.org/all/CAJX_Q+1Tjc+-TjZ6JW9X0NxEdFe=82a9626yL63j7uVD4LpxEA@mail.gmail.com/

V1: https://lore.kernel.org/all/20230406151429.524591-1-tanure@linux.com/
v2: https://lore.kernel.org/all/20230410120017.41664-1-tanure@linux.com/

Change from V2:
- Remove region overlap and reserved checks

Change from V1:
- Instead of allowing to mark nomap a region already reserved, give
precedence to /reserved-memory node scan.

Lucas Tanure (1):
of: fdt: Scan /memreserve/ last

drivers/of/fdt.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

--
2.40.0

\
 
 \ /
  Last update: 2023-04-13 00:47    [W:0.031 / U:0.328 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site