Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756036AbbLGVvo (ORCPT ); Mon, 7 Dec 2015 16:51:44 -0500 Received: from mail.kernel.org ([198.145.29.136]:47308 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751450AbbLGVvn (ORCPT ); Mon, 7 Dec 2015 16:51:43 -0500 From: Andy Lutomirski To: x86@kernel.org Cc: linux-kernel@vger.kernel.org, Brian Gerst , Borislav Petkov , =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20Weisbecker?= , Denys Vlasenko , Linus Torvalds , Andy Lutomirski Subject: [PATCH 00/12] x86: Rewrite 64-bit syscall code Date: Mon, 7 Dec 2015 13:51:25 -0800 Message-Id: X-Mailer: git-send-email 2.5.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2375 Lines: 48 This is kind of like the 32-bit and compat code, except that I preserved the fast path this time. I was unable to measure any significant performance change on my laptop in the fast path. What do you all think? Andy Lutomirski (12): selftests/x86: Extend Makefile to allow 64-bit only tests selftests/x86: Add check_initial_reg_state x86/syscalls: Refactor syscalltbl.sh x86/syscalls: Remove __SYSCALL_COMMON and __SYSCALL_X32 x86/syscalls: Move compat syscall entry handling into syscalltbl.sh x86/syscalls: Add syscall entry qualifiers x86/entry/64: Always run ptregs-using syscalls on the slow path x86/entry/64: Call all native slow-path syscalls with full pt-regs x86/entry/64: Stop using int_ret_from_sys_call in ret_from_fork x86/entry/64: Migrate the 64-bit syscall slow path to C x86/entry/32: Change INT80 to be an interrupt gate x86/entry: Do enter_from_user_mode with IRQs off arch/x86/entry/common.c | 80 +++---- arch/x86/entry/entry_32.S | 8 +- arch/x86/entry/entry_64.S | 245 ++++++--------------- arch/x86/entry/entry_64_compat.S | 2 +- arch/x86/entry/syscall_32.c | 10 +- arch/x86/entry/syscall_64.c | 30 ++- arch/x86/entry/syscalls/syscall_64.tbl | 18 +- arch/x86/entry/syscalls/syscalltbl.sh | 58 ++++- arch/x86/include/asm/thread_info.h | 5 +- arch/x86/kernel/asm-offsets_32.c | 2 +- arch/x86/kernel/asm-offsets_64.c | 10 +- arch/x86/kernel/traps.c | 2 +- arch/x86/um/sys_call_table_32.c | 4 +- arch/x86/um/sys_call_table_64.c | 7 +- arch/x86/um/user-offsets.c | 6 +- tools/testing/selftests/x86/Makefile | 13 +- .../selftests/x86/check_initial_reg_state.c | 108 +++++++++ 17 files changed, 330 insertions(+), 278 deletions(-) create mode 100644 tools/testing/selftests/x86/check_initial_reg_state.c -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/