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@xxxxxxxx/#regzbot #regzbot link: https://lore.kernel.org/all/CAJX_Q+1Tjc+-TjZ6JW9X0NxEdFe=82a9626yL63j7uVD4LpxEA@xxxxxxxxxxxxxx/ V1: https://lore.kernel.org/all/20230406151429.524591-1-tanure@xxxxxxxxx/ v2: https://lore.kernel.org/all/20230410120017.41664-1-tanure@xxxxxxxxx/ 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
