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Use get_blocks_from_size instead of +1

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This commit is contained in:
apio 2022-12-04 15:52:56 +01:00
parent 0d10c98477
commit 766804b3a0
Signed by: apio
GPG Key ID: B8A7D06E42258954
1 changed files with 3 additions and 2 deletions
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kernel/src/memory/MemoryManager.cpp
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@ -69,7 +69,7 @@ namespace MemoryManager
// We store our frame bitmap at the beginning of the largest free memory block. // We store our frame bitmap at the beginning of the largest free memory block.
char* frame_bitmap_addr = (char*)largest_free.ptr; char* frame_bitmap_addr = (char*)largest_free.ptr;
usize frame_bitmap_size = physical_address_space_size / ARCH_PAGE_SIZE / 8 + 1; usize frame_bitmap_size = get_blocks_from_size(physical_address_space_size / ARCH_PAGE_SIZE, 8UL);
// This should never happen, unless memory is very fragmented. Usually there is always a very big block of // This should never happen, unless memory is very fragmented. Usually there is always a very big block of
// usable memory and then some tiny blocks around it. // usable memory and then some tiny blocks around it.
@ -96,7 +96,8 @@ namespace MemoryManager
} }
} }
lock_frames((u64)frame_bitmap_addr, frame_bitmap_size / ARCH_PAGE_SIZE + 1); // Make sure that the physical frames used by the bitmap aren't handed out to anyone else.
lock_frames(largest_free.ptr, get_blocks_from_size(frame_bitmap_size, ARCH_PAGE_SIZE));
} }
void init() void init()