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pmm: Avoid throwing away big memory ranges that fail to AllocatePages() indiscriminately

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mintsuki 2022-10-17 04:34:27 +02:00
parent ce4046d559
commit d8193abc98
1 changed files with 8 additions and 2 deletions
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10
common/mm/pmm.s2.c
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@ -402,8 +402,14 @@ void init_memmap(void) {
memmap[i].length / 4096, &base); memmap[i].length / 4096, &base);
if (status) { if (status) {
print("pmm: WARNING: AllocatePages failure (%d)\n", status); for (size_t j = 0; j < memmap[i].length; j += 4096) {
memmap_alloc_range(memmap[i].base, memmap[i].length, MEMMAP_RESERVED, MEMMAP_USABLE, true, false, false); uint64_t length = memmap[i].length - j < 4096 ? memmap[i].length - j : 4096;
base = memmap[i].base + j;
status = gBS->AllocatePages(AllocateAddress, EfiLoaderData, length, &base);
if (status) {
memmap_alloc_range(base, length, MEMMAP_EFI_RECLAIMABLE, MEMMAP_USABLE, true, false, false);
}
}
} }
} }