diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2015-11-30 13:28:17 +0100 |
|---|---|---|
| committer | Amit Pundir <amit.pundir@linaro.org> | 2016-10-12 17:34:22 +0530 |
| commit | 2c2cc72a6ea8523be19d62052c91c745bd7254fe (patch) | |
| tree | d54fd4cc7ebe3b537bb893dc2350367ce455f981 | |
| parent | 1c4a6945fde71d5a426ea8adab895643ff848c3f (diff) | |
UPSTREAM: 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
mapping.
Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Change-Id: Ia3ce78f40f8d41a9afdd42238fe9cbfd81bbff08
(cherry picked from commit 4dffbfc48d65e5d8157a634fd670065d237a9377)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
| -rw-r--r-- | arch/arm64/kernel/efi.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c index 4eeb17198cfa..04531d35f1df 100644 --- a/arch/arm64/kernel/efi.c +++ b/arch/arm64/kernel/efi.c @@ -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)) pr_cont("*"); } @@ -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; memmap.map = early_memremap(params.mmap, params.mmap_size); if (memmap.map == NULL) { @@ -230,6 +228,9 @@ void __init efi_init(void) reserve_regions(); early_memunmap(memmap.map, 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) |