From patchwork Wed May 17 09:15:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weiwei Li X-Patchwork-Id: 13244519 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 9DC43C77B75 for ; Wed, 17 May 2023 09:17:20 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pzDGr-0005wk-Hx; Wed, 17 May 2023 05:16:33 -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 1pzDGl-00056a-NQ; Wed, 17 May 2023 05:16:27 -0400 Received: from smtp25.cstnet.cn ([159.226.251.25] helo=cstnet.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pzDGh-0007lT-QA; Wed, 17 May 2023 05:16:27 -0400 Received: from localhost.localdomain (unknown [61.165.33.195]) by APP-05 (Coremail) with SMTP id zQCowABnVxRam2Rks_XqJQ--.29147S9; Wed, 17 May 2023 17:16:16 +0800 (CST) From: Weiwei Li To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, alistair.francis@wdc.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, zhiwei_liu@linux.alibaba.com, richard.henderson@linaro.org, wangjunqiang@iscas.ac.cn, lazyparser@gmail.com, Weiwei Li Subject: [PATCH v6 07/12] target/riscv: Flush TLB when MMWP or MML bits are changed Date: Wed, 17 May 2023 17:15:14 +0800 Message-Id: <20230517091519.34439-8-liweiwei@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230517091519.34439-1-liweiwei@iscas.ac.cn> References: <20230517091519.34439-1-liweiwei@iscas.ac.cn> MIME-Version: 1.0 X-CM-TRANSID: zQCowABnVxRam2Rks_XqJQ--.29147S9 X-Coremail-Antispam: 1UD129KBjvdXoWrZF17KF15Zw4DXw4rWw43Awb_yoWftwc_Gr WI9F48W3y2gayvvFWrAF1rXw1UW3s5C3sFkFZ3Jr4fKFyjgr4fZ34UKFZ8JryjyanrWrn3 Zwn7JryUCr1FgjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbkxFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI8067AKxVWUAVCq3wA2048vs2 IY020Ec7CjxVAFwI0_Xr0E3s1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2x7M28E F7xvwVC0I7IYx2IY67AKxVW8JVW5JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVW8Jr0_Cr 1UM28EF7xvwVC2z280aVAFwI0_Cr1j6rxdM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4U M4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2 kIc2xKxwCY02Avz4vE14v_GFWl42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_ Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17 CE14v26r1q6r43MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_JFI_Gr1lIxAIcVC0 I7IYx2IY6xkF7I0E14v26F4j6r4UJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcV C2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2Kfnx nUUI43ZEXa7VUjXAw3UUUUU== X-Originating-IP: [61.165.33.195] X-CM-SenderInfo: 5olzvxxzhlqxpvfd2hldfou0/ Received-SPF: pass client-ip=159.226.251.25; envelope-from=liweiwei@iscas.ac.cn; helo=cstnet.cn X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 MMWP and MML bits may affect the allowed privs of PMP entries and the default privs, both of which may change the allowed privs of exsited TLB entries. So we need flush TLB when they are changed. Signed-off-by: Weiwei Li Signed-off-by: Junqiang Wang Reviewed-by: Alistair Francis --- target/riscv/pmp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/target/riscv/pmp.c b/target/riscv/pmp.c index 666fbb74b9..8cb8519b0c 100644 --- a/target/riscv/pmp.c +++ b/target/riscv/pmp.c @@ -578,6 +578,9 @@ void mseccfg_csr_write(CPURISCVState *env, target_ulong val) if (riscv_cpu_cfg(env)->epmp) { /* Sticky bits */ val |= (env->mseccfg & (MSECCFG_MMWP | MSECCFG_MML)); + if ((val ^ env->mseccfg) & (MSECCFG_MMWP | MSECCFG_MML)) { + tlb_flush(env_cpu(env)); + } } else { val &= ~(MSECCFG_MMWP | MSECCFG_MML | MSECCFG_RLB); }