x86/asm: Replace "MOVQ $imm, %reg" with MOVL
authorDenys Vlasenko <dvlasenk@redhat.com>
Tue, 31 Mar 2015 17:00:10 +0000 (19:00 +0200)
committerIngo Molnar <mingo@kernel.org>
Wed, 1 Apr 2015 11:17:39 +0000 (13:17 +0200)
commita734b4a23e4b5a5bba577d11b6e2ff21f6ca4fce
tree3f37abc5fe869f2f347d9cf93c14e78cdcaafd88
parent36acef2510853e2831047ca9e22d333ba7a1047b
x86/asm: Replace "MOVQ $imm, %reg" with MOVL

There is no reason to use MOVQ to load a non-negative immediate
constant value into a 64-bit register. MOVL does the same, since
the upper 32 bits are zero-extended by the CPU.

This makes the code a bit smaller, while leaving functionality
unchanged.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1427821211-25099-8-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/crypto/crc32c-pcl-intel-asm_64.S
arch/x86/crypto/twofish-x86_64-asm_64.S
arch/x86/kernel/relocate_kernel_64.S