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pmm: Workaround for cases in which AllocatePages fails during initialisation

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This commit is contained in:
mintsuki 2021-10-02 21:14:42 +02:00
parent 244b461700
commit a6acfb7606
1 changed files with 7 additions and 5 deletions
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12
stage23/mm/pmm.s2.c
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@ -356,9 +356,6 @@ void init_memmap(void) {
ext_mem_alloc_type(0x100000, MEMMAP_EFI_RECLAIMABLE);
}
memcpy(untouched_memmap, memmap, memmap_entries * sizeof(struct e820_entry_t));
untouched_memmap_entries = memmap_entries;
// Now own all the usable entries
for (size_t i = 0; i < memmap_entries; i++) {
if (memmap[i].type != MEMMAP_USABLE)
@ -369,10 +366,15 @@ void init_memmap(void) {
status = gBS->AllocatePages(AllocateAddress, EfiLoaderData,
memmap[i].length / 4096, &base);
if (status)
panic("pmm: AllocatePages failure (%x)", status);
if (status) {
print("pmm: WARNING: AllocatePages failure (%d)\n", status);
memmap_alloc_range(memmap[i].base, memmap[i].length, MEMMAP_RESERVED, true, true, false, false);
}
}
memcpy(untouched_memmap, memmap, memmap_entries * sizeof(struct e820_entry_t));
untouched_memmap_entries = memmap_entries;
return;
fail:
panic("pmm: Failure initialising memory map");