After traversing the UEFI memory map to discover the regions that are backed by normal RAM, register the resulting minimal memory map into the physmem memblock table.
Signed-off-by: Ard Biesheuvel <[email protected]> --- arch/arm64/kernel/efi.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c index ba5fe66c3634..b1b816ecf3b3 100644 --- a/arch/arm64/kernel/efi.c +++ b/arch/arm64/kernel/efi.c @@ -155,6 +155,7 @@ static __init void reserve_regions(void) { efi_memory_desc_t *md; u64 paddr, npages, size; + struct memblock_region *r; if (uefi_debug) pr_info("Processing EFI memory map:\n"); @@ -187,6 +188,14 @@ static __init void reserve_regions(void) pr_cont("\n"); } + /* + * After memblock has stitched all the regions together, copy the + * resulting map of physical memory from the memory memblock table into + * the physmem memblock table. + */ + for_each_memblock(memory, r) + memblock_add_phys(r->base, r->size); + set_bit(EFI_MEMMAP, &efi.flags); } -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
