Commit 4dffbfc4 authored by Ard Biesheuvel's avatar Ard Biesheuvel Committed by Will Deacon
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arm64/efi: mark UEFI reserved regions as MEMBLOCK_NOMAP

Change the EFI memory reservation logic to use memblock_mark_nomap()
rather than memblock_reserve() to mark UEFI reserved regions as
occupied. In addition to reserving them against allocations done by
memblock, this will also prevent them from being covered by the linear

Reviewed-by: default avatarMatt Fleming <>
Signed-off-by: default avatarArd Biesheuvel <>
Signed-off-by: default avatarWill Deacon <>
parent 68709f45
......@@ -187,7 +187,7 @@ static __init void reserve_regions(void)
early_init_dt_add_memory_arch(paddr, size);
if (is_reserve_region(md)) {
memblock_reserve(paddr, size);
memblock_mark_nomap(paddr, size);
if (efi_enabled(EFI_DBG))
......@@ -209,8 +209,6 @@ void __init efi_init(void)
efi_system_table = params.system_table;
memblock_reserve(params.mmap & PAGE_MASK,
PAGE_ALIGN(params.mmap_size + (params.mmap & ~PAGE_MASK)));
memmap.phys_map = params.mmap; = early_memremap(params.mmap, params.mmap_size);
if ( == NULL) {
......@@ -230,6 +228,9 @@ void __init efi_init(void)
early_memunmap(, params.mmap_size);
memblock_mark_nomap(params.mmap & PAGE_MASK,
PAGE_ALIGN(params.mmap_size +
(params.mmap & ~PAGE_MASK)));
static bool __init efi_virtmap_init(void)
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