diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-05 11:53:00 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-04-05 16:59:24 +0200 |
| commit | dfe64506c01e57159a4c550fe537c13a317ff01b (patch) | |
| tree | 4c5623bfac6ecb60eb36dec94784eda740d11c0f /init | |
| parent | 642e7fd23353e22290e3d51719fcb658dc252342 (diff) | |
x86/syscalls: Don't pointlessly reload the system call number
We have it in a register in the low-level asm, just pass it in as an
argument rather than have do_syscall_64() load it back in from the
ptregs pointer.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20180405095307.3730-2-linux@dominikbrodowski.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions