From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 6074B60290 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753487AbeFFQXd (ORCPT + 25 others); Wed, 6 Jun 2018 12:23:33 -0400 Received: from mga17.intel.com ([192.55.52.151]:61007 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752952AbeFFQXc (ORCPT ); Wed, 6 Jun 2018 12:23:32 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,483,1520924400"; d="scan'208";a="62323457" From: "Chang S. Bae" To: Andy Lutomirski , "H . Peter Anvin" , Thomas Gleixner , Ingo Molnar Cc: Andi Kleen , Dave Hansen , Markus T Metzger , "Ravi V . Shankar" , "Chang S . Bae" , LKML Subject: [PATCH v2 0/8] x86: infrastructure to enable FSGSBASE Date: Wed, 6 Jun 2018 09:23:11 -0700 Message-Id: <1528302199-29619-1-git-send-email-chang.seok.bae@intel.com> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Given feedbacks from [1], it was asked to make first a few patches ready as soon as possible. To make FSGSBASE facilitated, some helper functions and refactoring work are incorporated. Besides that, it includes Andy's fix for accurate FS/GS base read and cleanup for the vDSO initialization. Changes from V1: * Rename the x86-64 CPU_NUMBER segment from PER_CPU * Add i386 CPU_NUMBER equivalent to x86-64 at GDT entry 23 * Add additional helper function to store CPU number [1] FSGSBASE patch set V2: https://lkml.org/lkml/2018/5/31/686 [2] infrastructure to enable FSGSBASE V1: https://lkml.org/lkml/2018/6/4/887 Andy Lutomirski (1): x86/fsgsbase/64: Make ptrace read FS/GS base accurately Chang S. Bae (7): x86/fsgsbase/64: Introduce FS/GS base helper functions x86/fsgsbase/64: Use FS/GS base helpers in core dump x86/fsgsbase/64: Factor out load FS/GS segments from __switch_to x86/msr: write_rdtscp_aux() to use wrmsr_safe() x86/segments/64: Rename PER_CPU segment to CPU_NUMBER x86/segments/32: Introduce CPU_NUMBER segment x86/vdso: Move out the CPU number store arch/x86/entry/vdso/vgetcpu.c | 4 +- arch/x86/entry/vdso/vma.c | 38 +-------- arch/x86/include/asm/elf.h | 6 +- arch/x86/include/asm/fsgsbase.h | 47 +++++++++++ arch/x86/include/asm/msr.h | 2 +- arch/x86/include/asm/segment.h | 60 ++++++++++--- arch/x86/include/asm/vgtod.h | 4 +- arch/x86/kernel/cpu/common.c | 5 ++ arch/x86/kernel/process_64.c | 181 +++++++++++++++++++++++++++++++--------- arch/x86/kernel/ptrace.c | 28 ++----- arch/x86/kernel/setup_percpu.c | 25 ++++++ 11 files changed, 284 insertions(+), 116 deletions(-) create mode 100644 arch/x86/include/asm/fsgsbase.h -- 2.7.4