The usable memory range may be restricted through parameters that did not come from EFI, like the FDT "linux,usable-memory-range" property. Enforce this range after the EFI memory map regions have been processed. Signed-off-by: Frank van der Linden <fllinden@xxxxxxxxxx> --- drivers/firmware/efi/efi-init.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/firmware/efi/efi-init.c b/drivers/firmware/efi/efi-init.c index b19ce1a83f91..280e9178c7df 100644 --- a/drivers/firmware/efi/efi-init.c +++ b/drivers/firmware/efi/efi-init.c @@ -204,6 +204,13 @@ static __init void reserve_regions(void) memblock_reserve(paddr, size); } } + + /* + * Done, filter !nomap memory we just added so that the + * usable range is enforced. This is normally only set + * for crash kernels on some architectures. + */ + memblock_enforce_usable_range(); } void __init efi_init(void) -- 2.32.0
