diff options
| author | Sai Praneeth <sai.praneeth.prakhya@intel.com> | 2018-03-12 11:44:56 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-03-12 12:05:01 +0300 |
| commit | 7e904a91bf6049071ef9d605a52f863ae774081d (patch) | |
| tree | 9068d922b617ccbb46314242ae0c88b745952046 /arch | |
| parent | b0599e2801df79d571c9e9a763b174b9f0edc558 (diff) | |
| download | linux-7e904a91bf6049071ef9d605a52f863ae774081d.tar.xz | |
efi: Use efi_mm in x86 as well as ARM
Presently, only ARM uses mm_struct to manage EFI page tables and EFI
runtime region mappings. As this is the preferred approach, let's make
this data structure common across architectures. Specially, for x86,
using this data structure improves code maintainability and readability.
Tested-by: Bhupesh Sharma <bhsharma@redhat.com>
[ardb: don't #include the world to get a declaration of struct mm_struct]
Signed-off-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Lee, Chun-Yi <jlee@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Shankar <ravi.v.shankar@intel.com>
Cc: Ricardo Neri <ricardo.neri@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20180312084500.10764-2-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/efi.h | 1 | ||||
| -rw-r--r-- | arch/x86/platform/efi/efi_64.c | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index a399c1ebf6f0..c62443fa7d0a 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -7,6 +7,7 @@ #include <asm/processor-flags.h> #include <asm/tlb.h> #include <asm/nospec-branch.h> +#include <asm/mmu_context.h> /* * We map the EFI regions needed for runtime services non-contiguously, diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index 780460aa5ea5..29425b6c98a7 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -233,6 +233,9 @@ int __init efi_alloc_page_tables(void) return -ENOMEM; } + mm_init_cpumask(&efi_mm); + init_new_context(NULL, &efi_mm); + return 0; } |