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pmm: Make sure conv_mem_alloc() does not return NULL as a valid allocation

This commit is contained in:
mintsuki 2021-03-13 14:10:40 +01:00
parent 05f60916ef
commit 1f1f601c50
1 changed files with 9 additions and 2 deletions
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11
stage23/mm/pmm.s2.c
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@ -300,10 +300,17 @@ void init_memmap(void) {
if (entry_pool_limit > 0x100000)
entry_pool_limit = 0x100000;
size_t entry_pool_size = entry_pool_limit - entry->PhysicalStart;
size_t entry_pool_start = entry->PhysicalStart;
if (entry_pool_start < 0x1000)
entry_pool_start = 0x1000;
if (entry_pool_start > entry_pool_limit)
continue;
size_t entry_pool_size = entry_pool_limit - entry_pool_start;
if (entry_pool_size > bump_alloc_pool_size) {
bump_allocator_base = entry->PhysicalStart;
bump_allocator_base = entry_pool_start;
bump_allocator_limit = entry_pool_limit;
bump_alloc_pool_size = entry_pool_size;
}