[PATCH 0/5] x86/asm/entry/64: simplifications

[Denys Vlasenko <dvlasenk@redhat.com>]

This patchset simplifies jump maze in entry_64.S a bit by moving
"retint_kernel" code block, and follows up with simplifications
which become obvious after the move.

Two labels and one define is gone
One label is no longer .global
One redundand DISABLE_INTERRUPTS is gone
A few jump and test instructions use shorter forms now

   text           data     bss     dec     hex filename
  12706              0       0   12706    31a2 entry_64.o.before
  12658              0       0   12658    3172 entry_64.o

Patchset was run-tested (running it while writing this).

Denys Vlasenko (5):
  x86/asm/entry/64: move retint_kernel code block closer to its user
  x86/asm/entry/64: simplify retint_kernel label usage, make
    retint_restore_args label local
  x86/asm/entry/64: remove redundant DISABLE_INTERRUPTS
  x86/asm/entry/64: do not GET_THREAD_INFO() too early
  x86/asm/entry/64: drop exit_intr label

 arch/x86/kernel/entry_64.S | 40 +++++++++++++++++-----------------------
 1 file changed, 17 insertions(+), 23 deletions(-)
---
CC: Linus Torvalds <torvalds@linux-foundation.org>
CC: Steven Rostedt <rostedt@goodmis.org>
CC: Ingo Molnar <mingo@kernel.org>
CC: Borislav Petkov <bp@alien8.de>
CC: "H. Peter Anvin" <hpa@zytor.com>
CC: Andy Lutomirski <luto@amacapital.net>
CC: Oleg Nesterov <oleg@redhat.com>
CC: Frederic Weisbecker <fweisbec@gmail.com>
CC: Alexei Starovoitov <ast@plumgrid.com>
CC: Will Drewry <wad@chromium.org>
CC: Kees Cook <keescook@chromium.org>
CC: x86@kernel.org
CC: linux-kernel@vger.kernel.org

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1.8.1.4