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Kernel: Cut allocation size for physical buddy bitmaps in half

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We were allocating twice as much memory as we needed for these bitmaps
due to a silly typo. Found by tomuta trying to boot with 24 GiB of RAM.
This commit is contained in:
Andreas Kling 2021-07-13 23:43:31 +02:00
parent eb7b755937
commit 6cc1247395
1 changed files with 1 additions and 1 deletions
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2
Kernel/VM/PhysicalZone.cpp
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@ -25,7 +25,7 @@ PhysicalZone::PhysicalZone(PhysicalAddress base_address, size_t page_count)
for (int order = max_order; order >= 0; --order) { for (int order = max_order; order >= 0; --order) {
auto& bucket = m_buckets[order]; auto& bucket = m_buckets[order];
size_t block_size = 2u << order; size_t block_size = 2u << order;
size_t bitmap_size_for_order = ceil_div((size_t)(chunk_count / block_size), (size_t)1); size_t bitmap_size_for_order = ceil_div((size_t)(chunk_count / block_size), (size_t)2);
bucket.order = order; bucket.order = order;
if (bitmap_size_for_order) if (bitmap_size_for_order)
bucket.bitmap.grow(bitmap_size_for_order, false); bucket.bitmap.grow(bitmap_size_for_order, false);