summaryrefslogtreecommitdiff
path: root/arch/arm/include/asm/efi.h
diff options
context:
space:
mode:
authorArd Biesheuvel <ardb@kernel.org>2019-12-24 16:10:09 +0100
committerIngo Molnar <mingo@kernel.org>2019-12-25 10:49:17 +0100
commitf958efe97596837f9504fc38d75ef8e284bc0ebd (patch)
tree40b5cc3b945654f16c17248eadc724eee0194cf4 /arch/arm/include/asm/efi.h
parent1786e83011644e18732ed006413339d5323766e9 (diff)
efi/libstub: Distinguish between native/mixed not 32/64 bit
Currently, we support mixed mode by casting all boot time firmware calls to 64-bit explicitly on native 64-bit systems, and to 32-bit on 32-bit systems or 64-bit systems running with 32-bit firmware. Due to this explicit awareness of the bitness in the code, we do a lot of casting even on generic code that is shared with other architectures, where mixed mode does not even exist. This casting leads to loss of coverage of type checking by the compiler, which we should try to avoid. So instead of distinguishing between 32-bit vs 64-bit, distinguish between native vs mixed, and limit all the nasty casting and pointer mangling to the code that actually deals with mixed mode. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Cc: Arvind Sankar <nivedita@alum.mit.edu> Cc: Borislav Petkov <bp@alien8.de> Cc: James Morse <james.morse@arm.com> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Link: https://lkml.kernel.org/r/20191224151025.32482-10-ardb@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm/include/asm/efi.h')
-rw-r--r--arch/arm/include/asm/efi.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/include/asm/efi.h b/arch/arm/include/asm/efi.h
index 2306ed783ceb..9b0c64c28bff 100644
--- a/arch/arm/include/asm/efi.h
+++ b/arch/arm/include/asm/efi.h
@@ -52,7 +52,7 @@ void efi_virtmap_unload(void);
#define efi_call_early(f, ...) sys_table_arg->boottime->f(__VA_ARGS__)
#define efi_call_runtime(f, ...) sys_table_arg->runtime->f(__VA_ARGS__)
-#define efi_is_64bit() (false)
+#define efi_is_native() (true)
#define efi_table_attr(table, attr, instance) \
((table##_t *)instance)->attr