Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752691AbdLFMkm (ORCPT ); Wed, 6 Dec 2017 07:40:42 -0500 Received: from foss.arm.com ([217.140.101.70]:34594 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751852AbdLFMgK (ORCPT ); Wed, 6 Dec 2017 07:36:10 -0500 From: Will Deacon To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, catalin.marinas@arm.com, mark.rutland@arm.com, ard.biesheuvel@linaro.org, sboyd@codeaurora.org, dave.hansen@linux.intel.com, keescook@chromium.org, msalter@redhat.com, labbott@redhat.com, tglx@linutronix.de, Will Deacon Subject: [PATCH v3 00/20] arm64: Unmap the kernel whilst running in userspace (KPTI) Date: Wed, 6 Dec 2017 12:35:19 +0000 Message-Id: <1512563739-25239-1-git-send-email-will.deacon@arm.com> X-Mailer: git-send-email 2.1.4 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3755 Lines: 90 Hi everybody, This is version three of the patches formerly known as KAISER (♔). v1: http://lists.infradead.org/pipermail/linux-arm-kernel/2017-November/542751.html v2: http://lists.infradead.org/pipermail/linux-arm-kernel/2017-November/544817.html Changes since v2 include: * Rename command-line option from "kaiser=" to "kpti=" for parity with x86 * Fixed Falkor erratum workaround (missing '~') * Moved vectors base from literal pool into separate data page * Added TTBR_ASID_MASK instead of open-coded constants * Added missing newline to error message * Fail to probe SPE if KPTI is enabled * Addressed minor review comments * Added tags * Based on -rc2 Patches are also pushed here: git://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git kpti Feedback and testing welcome. At this point, I'd like to start thinking about getting this merged for 4.16. Cheers, Will --->8 Will Deacon (20): arm64: mm: Use non-global mappings for kernel space arm64: mm: Temporarily disable ARM64_SW_TTBR0_PAN arm64: mm: Move ASID from TTBR0 to TTBR1 arm64: mm: Remove pre_ttbr0_update_workaround for Falkor erratum #E1003 arm64: mm: Rename post_ttbr0_update_workaround arm64: mm: Fix and re-enable ARM64_SW_TTBR0_PAN arm64: mm: Allocate ASIDs in pairs arm64: mm: Add arm64_kernel_unmapped_at_el0 helper arm64: mm: Invalidate both kernel and user ASIDs when performing TLBI arm64: entry: Add exception trampoline page for exceptions from EL0 arm64: mm: Map entry trampoline into trampoline and kernel page tables arm64: entry: Explicitly pass exception level to kernel_ventry macro arm64: entry: Hook up entry trampoline to exception vectors arm64: erratum: Work around Falkor erratum #E1003 in trampoline code arm64: tls: Avoid unconditional zeroing of tpidrro_el0 for native tasks arm64: entry: Add fake CPU feature for unmapping the kernel at EL0 arm64: Kconfig: Add CONFIG_UNMAP_KERNEL_AT_EL0 perf: arm_spe: Fail device probe when arm64_kernel_unmapped_at_el0() arm64: mm: Introduce TTBR_ASID_MASK for getting at the ASID in the TTBR arm64: kaslr: Put kernel vectors address in separate data page arch/arm64/Kconfig | 30 +++-- arch/arm64/include/asm/asm-uaccess.h | 26 ++-- arch/arm64/include/asm/assembler.h | 27 +---- arch/arm64/include/asm/cpucaps.h | 3 +- arch/arm64/include/asm/fixmap.h | 5 + arch/arm64/include/asm/kernel-pgtable.h | 12 +- arch/arm64/include/asm/mmu.h | 11 ++ arch/arm64/include/asm/mmu_context.h | 9 +- arch/arm64/include/asm/pgtable-hwdef.h | 1 + arch/arm64/include/asm/pgtable-prot.h | 21 +++- arch/arm64/include/asm/pgtable.h | 1 + arch/arm64/include/asm/proc-fns.h | 6 - arch/arm64/include/asm/tlbflush.h | 16 ++- arch/arm64/include/asm/uaccess.h | 21 +++- arch/arm64/kernel/asm-offsets.c | 6 +- arch/arm64/kernel/cpufeature.c | 41 +++++++ arch/arm64/kernel/entry.S | 203 +++++++++++++++++++++++++++----- arch/arm64/kernel/process.c | 12 +- arch/arm64/kernel/vmlinux.lds.S | 40 ++++++- arch/arm64/lib/clear_user.S | 2 +- arch/arm64/lib/copy_from_user.S | 2 +- arch/arm64/lib/copy_in_user.S | 2 +- arch/arm64/lib/copy_to_user.S | 2 +- arch/arm64/mm/cache.S | 2 +- arch/arm64/mm/context.c | 36 +++--- arch/arm64/mm/mmu.c | 31 +++++ arch/arm64/mm/proc.S | 12 +- arch/arm64/xen/hypercall.S | 2 +- drivers/perf/arm_spe_pmu.c | 9 ++ 29 files changed, 454 insertions(+), 137 deletions(-) -- 2.1.4