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Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull EFI fix from Ingo Molnar:
 "An arm64 boot crash fix"

* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/arm64: Don't apply MEMBLOCK_NOMAP to UEFI memory map mapping
This commit is contained in:
Linus Torvalds 2016-04-16 15:37:05 -07:00
commit e2f50c5c6c
1 changed files with 15 additions and 3 deletions
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18
drivers/firmware/efi/arm-init.c
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@ -203,7 +203,19 @@ 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)));
if (IS_ENABLED(CONFIG_ARM)) {
/*
* ARM currently does not allow ioremap_cache() to be called on
* memory regions that are covered by struct page. So remove the
* UEFI memory map from the linear mapping.
*/
memblock_mark_nomap(params.mmap & PAGE_MASK,
PAGE_ALIGN(params.mmap_size +
(params.mmap & ~PAGE_MASK)));
} else {
memblock_reserve(params.mmap & PAGE_MASK,
PAGE_ALIGN(params.mmap_size +
(params.mmap & ~PAGE_MASK)));
}
}