diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-04-25 21:06:52 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-04-28 11:33:59 +0200 |
| commit | 57fdb89aeb7b0e3aab19847ab7399e5d76f11e6f (patch) | |
| tree | 8f795af42f07869609a70d6bb9337431749c8c2f /arch/arm64/kernel/efi.c | |
| parent | 07ea7ec5df3ee4a9fedb3d81dc69c2f8d07d44c0 (diff) | |
arm64/efi/libstub: Make screen_info accessible to the UEFI stub
Unlike on 32-bit ARM, where we need to pass the stub's version of struct
screen_info to the kernel proper via a configuration table, on 64-bit ARM
it simply involves making the core kernel's copy of struct screen_info
visible to the stub by exposing an __efistub_ alias for it.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Herrmann <dh.herrmann@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Jones <pjones@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/1461614832-17633-21-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/efi.c')
| -rw-r--r-- | arch/arm64/kernel/efi.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c index 33a6da160a50..78f52488f9ff 100644 --- a/arch/arm64/kernel/efi.c +++ b/arch/arm64/kernel/efi.c @@ -56,6 +56,9 @@ static __init pteval_t create_mapping_protection(efi_memory_desc_t *md) return pgprot_val(PAGE_KERNEL_EXEC); } +/* we will fill this structure from the stub, so don't put it in .bss */ +struct screen_info screen_info __section(.data); + int __init efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md) { pteval_t prot_val = create_mapping_protection(md); |