From patchwork Wed Apr 19 03:27:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weiwei Li X-Patchwork-Id: 13216336 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 1F77FC77B76 for ; Wed, 19 Apr 2023 03:29:29 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1poyTz-0007PG-7I; Tue, 18 Apr 2023 23:27:47 -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 1poyTv-0007Mp-O0; Tue, 18 Apr 2023 23:27:43 -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 1poyTt-00011y-5F; Tue, 18 Apr 2023 23:27:43 -0400 Received: from localhost.localdomain (unknown [180.165.241.15]) by APP-05 (Coremail) with SMTP id zQCowACnrxegXz9kyEroFA--.60284S9; Wed, 19 Apr 2023 11:27:34 +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 v3 7/7] target/riscv: Separate pmp_update_rule() in pmpcfg_csr_write Date: Wed, 19 Apr 2023 11:27:25 +0800 Message-Id: <20230419032725.29721-8-liweiwei@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230419032725.29721-1-liweiwei@iscas.ac.cn> References: <20230419032725.29721-1-liweiwei@iscas.ac.cn> MIME-Version: 1.0 X-CM-TRANSID: zQCowACnrxegXz9kyEroFA--.60284S9 X-Coremail-Antispam: 1UD129KBjvJXoW7Kr1fWw45KF1DZF48Aw18Zrb_yoW8WFWUpr WIkFWIgr45ta4qg34fJF1UWrs8Ca1rKFn2q3yvkF1F9a1rua4rCF1qg3s29F45GayfZrWY 9a4UZr4UZF40vFJanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPa14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26r4UJVWxJr1l84ACjcxK6I8E87Iv6xkF7I0E14v26F4U JVW0owAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7V C0I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j 6r4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x0262 8vn2kIc2xKxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02 F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GF ylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUCVW8JwCI42IY6xIIjxv20xvEc7Cj xVAFwI0_Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxV WUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjfU OBTYUUUUU X-Originating-IP: [180.165.241.15] 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: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, 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 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 755ed2b963..7d825c1746 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 != val) { env->pmp_state.pmp[pmp_index].cfg_reg = 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)); } /* @@ -486,7 +488,7 @@ void pmpcfg_csr_write(CPURISCVState *env, uint32_t reg_index, /* If PMP permission of any addr has been changed, flush TLB pages. */ if (modified) { - tlb_flush(env_cpu(env)); + pmp_update_rule_nums(env); } } @@ -539,7 +541,6 @@ void pmpaddr_csr_write(CPURISCVState *env, uint32_t addr_index, if (env->pmp_state.pmp[addr_index].addr_reg != val) { env->pmp_state.pmp[addr_index].addr_reg = val; pmp_update_rule(env, addr_index); - tlb_flush(env_cpu(env)); } } else { qemu_log_mask(LOG_GUEST_ERROR,