diff options
| author | Andy Lutomirski <luto@kernel.org> | 2016-07-14 23:22:51 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-07-15 11:26:26 +0300 |
| commit | d92fc69ccac4c0a20679fdbdc81b2010685a6f33 (patch) | |
| tree | 7d2f143912fd073f8052980205f05c4a2471aa21 /arch/x86/platform/efi/efi_64.c | |
| parent | 360cb4d15567a7eca07a5f3ade6de308bbfb4e70 (diff) | |
| download | linux-d92fc69ccac4c0a20679fdbdc81b2010685a6f33.tar.xz | |
x86/mm: Remove kernel_unmap_pages_in_pgd() and efi_cleanup_page_tables()
kernel_unmap_pages_in_pgd() is dangerous: if a PGD entry in
init_mm.pgd were to be cleared, callers would need to ensure that
the pgd entry hadn't been propagated to any other pgd.
Its only caller was efi_cleanup_page_tables(), and that, in turn,
was unused, so just delete both functions. This leaves a couple of
other helpers unused, so delete them, too.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Acked-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/77ff20fdde3b75cd393be5559ad8218870520248.1468527351.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/platform/efi/efi_64.c')
| -rw-r--r-- | arch/x86/platform/efi/efi_64.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index b226b3f497f1..d288dcea1ffe 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -285,11 +285,6 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) return 0; } -void __init efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages) -{ - kernel_unmap_pages_in_pgd(efi_pgd, pa_memmap, num_pages); -} - static void __init __map_region(efi_memory_desc_t *md, u64 va) { unsigned long flags = _PAGE_RW; |