x86, memblock: Use memblock_memory_size()/memblock_free_memory_size() to get correct dma_reserve
memblock_memory_size() will return memory size in memblock.memory.region.
memblock_free_memory_size() will return free memory size in memblock.memory.region.
So We can get exact reseved size in specified range.
Set the size right after initmem_init(), because later bootmem API will
get area above 16M. (except some fallback).
Later after we remove the bootmem, We could call that just before paging_init().
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h
index 7186463..5be1542 100644
--- a/arch/x86/include/asm/e820.h
+++ b/arch/x86/include/asm/e820.h
@@ -117,6 +117,8 @@
extern u64 early_reserve_e820(u64 startt, u64 sizet, u64 align);
void memblock_x86_fill(void);
+void memblock_find_dma_reserve(void);
+
extern void finish_e820_parsing(void);
extern void e820_reserve_resources(void);
extern void e820_reserve_resources_late(void);