Two small fixes to enable the use soft-reserved/special-purpose memory (EFI_MEMORY_SP) with dax_kmem on RISC-V (and ARM64, I think, though I don't have a platform to test it on). Patch 1 fixes a trivial integer narrowing bug. Patch 2 prevents adding memblocks for unusable memory (including soft-resreved memory) so that it can later be hotplugged by dax_kmem. Tested on a RISC-V platform that presents a range of EFI_MEMORY_SP with Bjorn's MEMORY_HOTPLUG series[0] applied. [0]: https://lore.kernel.org/lkml/20230512145737.985671-1-bjorn@xxxxxxxxxx/ Andrew Bresticker (2): efi: runtime: Fix potential overflow of soft-reserved region size efi: Don't add memblocks for unusable memory drivers/firmware/efi/arm-runtime.c | 2 +- drivers/firmware/efi/efi-init.c | 12 +----------- drivers/firmware/efi/riscv-runtime.c | 2 +- 3 files changed, 3 insertions(+), 13 deletions(-) -- 2.34.1
