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/kernel/setup.c b/arch/x86/kernel/setup.c
index a4f0173..924c8f7 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1013,6 +1013,7 @@
#endif
initmem_init(0, max_pfn, acpi, k8);
+ memblock_find_dma_reserve();
#ifndef CONFIG_NO_BOOTMEM
memblock_x86_to_bootmem(0, max_low_pfn<<PAGE_SHIFT);
#endif