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powerpc/prom: move the device tree if not in declared memory. 

If the device tree doesn't reside in the memory which is declared
inside it, it has to be moved as well as this memory will not be
mapped by the kernel.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy 2018-12-17 14:18:27 +00:00 committed by Michael Ellerman
parent ec2adcd8dd
commit f242e0ac95
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/kernel/prom.c
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@ -124,8 +124,8 @@ static void __init move_device_tree(void)
size = fdt_totalsize(initial_boot_params);
if ((memory_limit && (start + size) > PHYSICAL_START + memory_limit) ||
overlaps_crashkernel(start, size) ||
overlaps_initrd(start, size)) {
!memblock_is_memory(start + size - 1) ||
overlaps_crashkernel(start, size) || overlaps_initrd(start, size)) {
p = __va(memblock_phys_alloc(size, PAGE_SIZE));
memcpy(p, initial_boot_params, size);
initial_boot_params = p;