From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755220AbdKBH7Z (ORCPT ); Thu, 2 Nov 2017 03:59:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:37924 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755191AbdKBH7X (ORCPT ); Thu, 2 Nov 2017 03:59:23 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AB0E5218D2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=luto@kernel.org From: Andy Lutomirski To: X86 ML Cc: Borislav Petkov , "linux-kernel@vger.kernel.org" , Brian Gerst , Dave Hansen , Linus Torvalds , Andy Lutomirski Subject: [PATCH v2 00/20] Pile o' entry/exit/sp0 changes Date: Thu, 2 Nov 2017 00:58:57 -0700 Message-Id: X-Mailer: git-send-email 2.13.6 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all- Here we go again! I haven't done most of the requested label renaming, nor have I done Brian's reordering of the SYSCALL return code, mainly because I want to keep the ball rolling. As for label renaming, I'd rather let everyone finish arguing and then rename any labels at the end. I personally don't mind longish asm labels. Changes from v1: - Comment improvements. - Lots of Reviewed-bys added. - Fix vm86 bug. - Completely remove RESTORE_..._REGS_... (Linus) -- adds two patches. Changes from the old RFC version: - Rebase - Add Juergen's patch - Add some assertions - Cleanups Andy Lutomirski (19): x86/asm/64: Remove the restore_c_regs_and_iret label x86/asm/64: Split the iret-to-user and iret-to-kernel paths x86/asm/64: Move SWAPGS into the common iret-to-usermode path x86/asm/64: Simplify reg restore code in the standard IRET paths x86/asm/64: Shrink paranoid_exit_restore and make labels local x86/asm/64: Use pop instead of movq in syscall_return_via_sysret x86/asm/64: Merge the fast and slow SYSRET paths x86/entry/64: Use POP instead of MOV to restore regs on NMI return x86/entry/64: Remove the RESTORE_..._REGS infrastructure x86/asm/64: De-Xen-ify our NMI code x86/asm/32: Pull MSR_IA32_SYSENTER_CS update code out of native_load_sp0() x86/asm/64: Pass sp0 directly to load_sp0() x86/asm: Add task_top_of_stack() to find the top of a task's stack x86/xen/64: Clean up SP code in cpu_initialize_context() x86/boot/64: Stop initializing TSS.sp0 at boot x86/asm/64: Remove all remaining direct thread_struct::sp0 reads x86/boot/32: Fix cpu_current_top_of_stack initialization at boot x86/asm/64: Remove thread_struct::sp0 x86/traps: Use a new on_thread_stack() helper to clean up an assertion Juergen Gross (1): xen: add xen nmi trap entry arch/x86/entry/calling.h | 69 +++++------------ arch/x86/entry/entry_64.S | 139 ++++++++++++++++++++-------------- arch/x86/entry/entry_64_compat.S | 3 +- arch/x86/include/asm/compat.h | 1 + arch/x86/include/asm/paravirt.h | 5 +- arch/x86/include/asm/paravirt_types.h | 2 +- arch/x86/include/asm/processor.h | 52 +++++-------- arch/x86/include/asm/switch_to.h | 24 ++++++ arch/x86/include/asm/traps.h | 2 +- arch/x86/kernel/cpu/common.c | 12 ++- arch/x86/kernel/head_64.S | 2 +- arch/x86/kernel/process.c | 8 +- arch/x86/kernel/process_32.c | 6 +- arch/x86/kernel/process_64.c | 5 +- arch/x86/kernel/smpboot.c | 3 +- arch/x86/kernel/traps.c | 3 +- arch/x86/kernel/vm86_32.c | 20 ++--- arch/x86/xen/enlighten_pv.c | 9 +-- arch/x86/xen/smp_pv.c | 17 ++++- arch/x86/xen/xen-asm_64.S | 2 +- 20 files changed, 208 insertions(+), 176 deletions(-) -- 2.13.6