diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-04-17 01:37:05 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-04-17 01:37:05 +0300 |
| commit | e2f50c5c6cd8dcfda30b8d656fe213f7e285c54a (patch) | |
| tree | f0961c1ed7fb7422b45d4c87cd2b9cefb9253b7f | |
| parent | 2e572599139d27db3aaf540b0d34f0a4f58dfca1 (diff) | |
| parent | f4d5b8adf3668a2fb69a411974057ec3b150b747 (diff) | |
| download | linux-e2f50c5c6cd8dcfda30b8d656fe213f7e285c54a.tar.xz | |
Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
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
| -rw-r--r-- | drivers/firmware/efi/arm-init.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/firmware/efi/arm-init.c b/drivers/firmware/efi/arm-init.c index aa1f743152a2..8714f8c271ba 100644 --- a/drivers/firmware/efi/arm-init.c +++ b/drivers/firmware/efi/arm-init.c @@ -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))); + } } |