From patchwork Sun Sep 29 07:04:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bibo Mao X-Patchwork-Id: 13814844 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D0054CF6495 for ; Sun, 29 Sep 2024 07:05:11 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sunyf-0000vl-J5; Sun, 29 Sep 2024 03:04:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sunya-0000tz-O3 for qemu-devel@nongnu.org; Sun, 29 Sep 2024 03:04:16 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sunyW-0005Z6-Sx for qemu-devel@nongnu.org; Sun, 29 Sep 2024 03:04:16 -0400 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8Bxnmvl+_hmqrADAA--.3157S3; Sun, 29 Sep 2024 15:04:05 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMBxztXl+_hmI8cUAA--.1144S2; Sun, 29 Sep 2024 15:04:05 +0800 (CST) From: Bibo Mao To: Song Gao Cc: Huacai Chen , qemu-devel@nongnu.org Subject: [PATCH v5 0/2] target/loongarch: Add loongson binary translation feature Date: Sun, 29 Sep 2024 15:04:03 +0800 Message-Id: <20240929070405.235200-1-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 MIME-Version: 1.0 X-CM-TRANSID: qMiowMBxztXl+_hmI8cUAA--.1144S2 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass client-ip=114.242.206.163; envelope-from=maobibo@loongson.cn; helo=mail.loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Loongson Binary Translation (LBT) is used to accelerate binary translation. LBT feature is added in kvm mode, not supported in TCG mode since it is not emulated. Here lbt=on/off property is added to parse command line to enable/disable lbt feature. Also fix registers relative lbt are saved and restored during migration. Reviewed-by: Song Gao --- v4 ... v5: 1. Define structure element eflags in structure LoongArchBT as uint32_t; in kernel eflags is defined as u64, however with ptrace and gdb interface it is defined u32, here defined as uint32_t to keep consistent from user view. 2. sync patch with latest qemu version. v3 ... v4: 1. Verify and enable LBT feature in function kvm_arch_init_vcpu() rather than loongarch_cpu_post_init(), since LBT feature is only effective in kvm mode and function kvm_feature_supported() can be defined as static. 2. Define structure element ftop in structure LoongArchBT as uint32_t to keep consist with kernel and real HW. v2 ... v3: 1. Property lbt is added only if kvm is enabled 2. Use feature variable lbt with OnOffAuto type, rather than feature bitmap flags default_features and forced_features v1 ... v2: 1. Add LBT register saving and restoring in vmstate 2. Add two pseudo feature flags: default_features and forced_features --- Bibo Mao (2): target/loongarch: Add loongson binary translation feature target/loongarch: Implement lbt registers save/restore function target/loongarch/cpu.c | 24 ++++++ target/loongarch/cpu.h | 18 ++++ target/loongarch/kvm/kvm.c | 119 +++++++++++++++++++++++++- target/loongarch/loongarch-qmp-cmds.c | 2 +- target/loongarch/machine.c | 24 ++++++ 5 files changed, 185 insertions(+), 2 deletions(-) base-commit: 3b14a767eaca3df5534a162851f04787b363670e