From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932335AbbBZWkr (ORCPT ); Thu, 26 Feb 2015 17:40:47 -0500 Received: from mail-pd0-f173.google.com ([209.85.192.173]:37695 "EHLO mail-pd0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753970AbbBZWkq (ORCPT ); Thu, 26 Feb 2015 17:40:46 -0500 From: Andy Lutomirski To: x86@kernel.org, linux-kernel@vger.kernel.org Cc: Borislav Petkov , Oleg Nesterov , Denys Vlasenko , Andy Lutomirski Subject: [PATCH 00/16] x86/asm changes for 4.1 for review Date: Thu, 26 Feb 2015 14:40:23 -0800 Message-Id: X-Mailer: git-send-email 2.1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all- After much handwringing, painful review, and curation, here's round 1 of the x86/asm changes. (This is not intended to imply that there will or will not be a round 2.) For ease of review for git users: The following changes since commit 7453311d68f16a5c587c3cbf19563c9a4fbbd41a: Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip (2015-02-09 17:16:44 -0800) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git for you to fetch changes up to 4710be56d76ef994ddf59087aad98c000fbab9a4: x86_64, entry: Remove a bogus ret_from_fork optimization (2015-02-26 07:09:36 -0800) Ingo, if you like these, feel free to pull. I will try to review the scary change *again* this evening if I have time. In the mean time, these are queued as is for -next. I will remove them from my -next branch if they turn out to be buggy or if they end up in -tip in any form. Andy Lutomirski (2): x86, entry: Remove int_check_syscall_exit_work x86_64, entry: Remove a bogus ret_from_fork optimization Denys Vlasenko (14): x86: open-code register save/restore in trace_hardirqs thunks x86: introduce push/pop macros which generate CFI_REL_OFFSET and CFI_RESTORE x86: entry_64.S: fix wrong symbolic constant usage: R11->ARGOFFSET x86: entry_64.S: always allocate complete "struct pt_regs" x86: entry_64.S: fix comments. No code changes x86: code shrink in paranoid_exit x86: mass removal of ARGOFFSET. No code changes x86: add comments about various syscall instructions, no code changes x86: entry_64.S: move save_paranoid and ret_from_fork closer to their users x86: entry_64.S: rename save_paranoid to paranoid_entry, no code changes x86: ia32entry.S: fold IA32_ARG_FIXUP macro into its callers x86: entry_64.S: use more understandable constants x86: ia32entry.S: use more understandable constant x86: entry.S: simplify optimistic SYSRET arch/x86/ia32/ia32entry.S | 342 ++++++++++++---------- arch/x86/include/asm/calling.h | 267 ++++++++--------- arch/x86/include/asm/dwarf2.h | 24 ++ arch/x86/include/asm/irqflags.h | 4 +- arch/x86/include/asm/ptrace.h | 13 +- arch/x86/include/uapi/asm/ptrace-abi.h | 16 +- arch/x86/include/uapi/asm/ptrace.h | 13 +- arch/x86/kernel/entry_32.S | 21 +- arch/x86/kernel/entry_64.S | 510 ++++++++++++++++----------------- arch/x86/lib/atomic64_cx8_32.S | 50 ++-- arch/x86/lib/checksum_32.S | 60 ++-- arch/x86/lib/msr-reg.S | 24 +- arch/x86/lib/rwsem.S | 44 ++- arch/x86/lib/thunk_32.S | 18 +- arch/x86/lib/thunk_64.S | 28 +- 15 files changed, 724 insertions(+), 710 deletions(-) -- 2.1.0