From patchwork Thu Oct 10 06:35:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: gaosong X-Patchwork-Id: 13829584 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 9F526CF07B5 for ; Thu, 10 Oct 2024 06:54:12 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1syn31-00018D-Ic; Thu, 10 Oct 2024 02:53:19 -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 1syn2z-00017h-Vy for qemu-devel@nongnu.org; Thu, 10 Oct 2024 02:53:18 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1syn2w-00040b-5N for qemu-devel@nongnu.org; Thu, 10 Oct 2024 02:53:17 -0400 Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8AxjnPVeQdn9OIRAA--.25757S3; Thu, 10 Oct 2024 14:53:09 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by front1 (Coremail) with SMTP id qMiowMBxXuTTeQdnBiAiAA--.41709S6; Thu, 10 Oct 2024 14:53:09 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Cc: richard.henderson@linaro.org, maobibo@loongson.cn, philmd@linaro.org Subject: [PATCH v2 4/5] target/loongarch: Add get_random_tlb_index() Date: Thu, 10 Oct 2024 14:35:35 +0800 Message-Id: <20241010063536.2276871-5-gaosong@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20241010063536.2276871-1-gaosong@loongson.cn> References: <20241010063536.2276871-1-gaosong@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: qMiowMBxXuTTeQdnBiAiAA--.41709S6 X-CM-SenderInfo: 5jdr20tqj6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass client-ip=114.242.206.163; envelope-from=gaosong@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_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_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 get_random_tlb_index() is used to get a random tlb index. Signed-off-by: Song Gao --- target/loongarch/tcg/tlb_helper.c | 34 +++++++++++++++++++++---------- 1 file changed, 23 insertions(+), 11 deletions(-) diff --git a/target/loongarch/tcg/tlb_helper.c b/target/loongarch/tcg/tlb_helper.c index bc6d708484..463e9be7f2 100644 --- a/target/loongarch/tcg/tlb_helper.c +++ b/target/loongarch/tcg/tlb_helper.c @@ -291,19 +291,12 @@ void helper_tlbwr(CPULoongArchState *env) fill_tlb_entry(env, index); } -void helper_tlbfill(CPULoongArchState *env) +static int get_random_tlb_index(CPULoongArchState *env, + uint64_t entryhi, uint16_t pagesize) { - uint64_t address, entryhi; + uint64_t address; + uint16_t stlb_ps; int index, set, stlb_idx; - uint16_t pagesize, stlb_ps; - - if (FIELD_EX64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR)) { - entryhi = env->CSR_TLBREHI; - pagesize = FIELD_EX64(env->CSR_TLBREHI, CSR_TLBREHI, PS); - } else { - entryhi = env->CSR_TLBEHI; - pagesize = FIELD_EX64(env->CSR_TLBIDX, CSR_TLBIDX, PS); - } stlb_ps = FIELD_EX64(env->CSR_STLBPS, CSR_STLBPS, PS); @@ -323,6 +316,25 @@ void helper_tlbfill(CPULoongArchState *env) index = get_random_tlb(LOONGARCH_STLB, LOONGARCH_TLB_MAX - 1); } + return index; +} + +void helper_tlbfill(CPULoongArchState *env) +{ + uint64_t entryhi; + uint16_t pagesize; + int index; + + if (FIELD_EX64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR)) { + entryhi = env->CSR_TLBREHI; + pagesize = FIELD_EX64(env->CSR_TLBREHI, CSR_TLBREHI, PS); + } else { + entryhi = env->CSR_TLBEHI; + pagesize = FIELD_EX64(env->CSR_TLBIDX, CSR_TLBIDX, PS); + } + + index = get_random_tlb_index(env, entryhi, pagesize); + invalidate_tlb(env, index); fill_tlb_entry(env, index); }