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[2620:137:e000::1:20]) by mx.google.com with ESMTP id 190-20020a6300c7000000b0050bea5bf413si1648573pga.705.2023.05.09.07.44.58; Tue, 09 May 2023 07:45:11 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235376AbjEIOXV (ORCPT + 99 others); Tue, 9 May 2023 10:23:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34864 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230345AbjEIOXU (ORCPT ); Tue, 9 May 2023 10:23:20 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 8699730D6 for ; Tue, 9 May 2023 07:23:15 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 4BF40FEC; Tue, 9 May 2023 07:23:59 -0700 (PDT) Received: from e126864.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 66C113F663; Tue, 9 May 2023 07:23:12 -0700 (PDT) From: Kristina Martsenko To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev Cc: Catalin Marinas , Will Deacon , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Zenghui Yu , Mark Rutland , Mark Brown , Luis Machado , Vladimir Murzin , linux-kernel@vger.kernel.org Subject: [PATCH v2 00/11] arm64: Support for Armv8.8 memcpy instructions in userspace Date: Tue, 9 May 2023 15:22:24 +0100 Message-Id: <20230509142235.3284028-1-kristina.martsenko@arm.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1765428178689203401?= X-GMAIL-MSGID: =?utf-8?q?1765428178689203401?= The Armv8.8 extension adds new instructions to perform memcpy(), memset() and memmove() operations in hardware (FEAT_MOPS). This series adds support for using the new instructions in userspace. More information can be found in the cover letter for v1: https://lore.kernel.org/linux-arm-kernel/20230216160012.272345-1-kristina.martsenko@arm.com/ Changes in v2: - Removed booting.rst requirement for HCRX_EL2.MCE2 - Changed HCRX_EL2 cpucap to be STRICT_BOOT type - Changed HCRX_EL2.SMPME to be set for the guest and unset for the host - Moved HCRX_EL2 initialization into init_el2_state(), dropped ISB - Simplified conditional checks in mops exception handler with XOR - Added comments from Arm ARM into mops exception handler - Converted cpucaps to use the new ARM64_CPUID_FIELDS() helper - Added MOPS to hwcaps kselftest - Improved commit messages - Rebased onto v6.4-rc1 - v1: https://lore.kernel.org/linux-arm-kernel/20230216160012.272345-1-kristina.martsenko@arm.com/ Kristina Martsenko (11): KVM: arm64: initialize HCRX_EL2 arm64: cpufeature: detect FEAT_HCX KVM: arm64: switch HCRX_EL2 between host and guest arm64: mops: document boot requirements for MOPS arm64: mops: don't disable host MOPS instructions from EL2 KVM: arm64: hide MOPS from guests arm64: mops: handle MOPS exceptions arm64: mops: handle single stepping after MOPS exception arm64: mops: detect and enable FEAT_MOPS arm64: mops: allow disabling MOPS from the kernel command line kselftest/arm64: add MOPS to hwcap test .../admin-guide/kernel-parameters.txt | 3 + Documentation/arm64/booting.rst | 6 ++ Documentation/arm64/cpu-feature-registers.rst | 2 + Documentation/arm64/elf_hwcaps.rst | 3 + arch/arm64/include/asm/el2_setup.h | 18 +++--- arch/arm64/include/asm/esr.h | 11 +++- arch/arm64/include/asm/exception.h | 1 + arch/arm64/include/asm/hwcap.h | 1 + arch/arm64/include/asm/kvm_arm.h | 4 ++ arch/arm64/include/uapi/asm/hwcap.h | 1 + arch/arm64/kernel/cpufeature.c | 23 ++++++++ arch/arm64/kernel/cpuinfo.c | 1 + arch/arm64/kernel/entry-common.c | 11 ++++ arch/arm64/kernel/idreg-override.c | 2 + arch/arm64/kernel/traps.c | 58 +++++++++++++++++++ arch/arm64/kvm/hyp/include/hyp/switch.h | 6 ++ arch/arm64/kvm/sys_regs.c | 1 + arch/arm64/tools/cpucaps | 2 + tools/testing/selftests/arm64/abi/hwcap.c | 22 +++++++ 19 files changed, 167 insertions(+), 9 deletions(-) base-commit: ac9a78681b921877518763ba0e89202254349d1b