From nobody Wed Feb 11 04:19:35 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1682168797828450.1270538608536; Sat, 22 Apr 2023 06:06:37 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pqCur-0007yA-Ld; Sat, 22 Apr 2023 09:04:37 -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 1pqCui-0007nz-Ta; Sat, 22 Apr 2023 09:04:28 -0400 Received: from smtp80.cstnet.cn ([159.226.251.80] helo=cstnet.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pqCud-0004VD-Ld; Sat, 22 Apr 2023 09:04:28 -0400 Received: from localhost.localdomain (unknown [180.165.241.15]) by APP-01 (Coremail) with SMTP id qwCowAAHTJxI20NkLKGxCA--.21573S9; Sat, 22 Apr 2023 21:04:13 +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 v4 7/7] target/riscv: Separate pmp_update_rule() in pmpcfg_csr_write Date: Sat, 22 Apr 2023 21:03:29 +0800 Message-Id: <20230422130329.23555-8-liweiwei@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230422130329.23555-1-liweiwei@iscas.ac.cn> References: <20230422130329.23555-1-liweiwei@iscas.ac.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qwCowAAHTJxI20NkLKGxCA--.21573S9 X-Coremail-Antispam: 1UD129KBjvJXoW7Kr1fWw45KF1DZF48Aw18Zrb_yoW8WFWUpr WxCFWIgr45t34qg34fJF1Uurs8Ca1rKFn2qw4kAF1F9a1rua4rCF1qg3sF9F45GaySvrWY 9a4UZr4UZF40vFJanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPF14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4U M4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2 kIc2xKxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E 14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIx kGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUCVW8JwCI42IY6xIIjxv20xvEc7CjxVAF wI0_Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVWUJV W8JwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjfUOBTY UUUUU X-Originating-IP: [180.165.241.15] X-CM-SenderInfo: 5olzvxxzhlqxpvfd2hldfou0/ Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=159.226.251.80; envelope-from=liweiwei@iscas.ac.cn; helo=cstnet.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_MSPIKE_H2=-0.001, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1682168799724100002 Content-Type: text/plain; charset="utf-8" Use pmp_update_rule_addr() and pmp_update_rule_nums() separately to update rule nums only once for each pmpcfg_csr_write. Then we can also move tlb_flush into pmp_update_rule_nums(). Signed-off-by: Weiwei Li Signed-off-by: Junqiang Wang --- target/riscv/pmp.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/target/riscv/pmp.c b/target/riscv/pmp.c index b0f1b0a715..5b765a9807 100644 --- a/target/riscv/pmp.c +++ b/target/riscv/pmp.c @@ -121,7 +121,7 @@ static bool pmp_write_cfg(CPURISCVState *env, uint32_t = pmp_index, uint8_t val) qemu_log_mask(LOG_GUEST_ERROR, "ignoring pmpcfg write - locked= \n"); } else if (env->pmp_state.pmp[pmp_index].cfg_reg !=3D val) { env->pmp_state.pmp[pmp_index].cfg_reg =3D val; - pmp_update_rule(env, pmp_index); + pmp_update_rule_addr(env, pmp_index); return true; } } else { @@ -207,6 +207,8 @@ void pmp_update_rule_nums(CPURISCVState *env) env->pmp_state.num_rules++; } } + + tlb_flush(env_cpu(env)); } =20 /* @@ -492,7 +494,7 @@ void pmpcfg_csr_write(CPURISCVState *env, uint32_t reg_= index, =20 /* If PMP permission of any addr has been changed, flush TLB pages. */ if (modified) { - tlb_flush(env_cpu(env)); + pmp_update_rule_nums(env); } } =20 @@ -545,7 +547,6 @@ void pmpaddr_csr_write(CPURISCVState *env, uint32_t add= r_index, if (env->pmp_state.pmp[addr_index].addr_reg !=3D val) { env->pmp_state.pmp[addr_index].addr_reg =3D val; pmp_update_rule(env, addr_index); - tlb_flush(env_cpu(env)); } } else { qemu_log_mask(LOG_GUEST_ERROR, --=20 2.25.1