From patchwork Mon Jul 29 01:39:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: gaosong X-Patchwork-Id: 13744148 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 565EFC3DA64 for ; Mon, 29 Jul 2024 01:58:33 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sYFdf-0004vY-6w; Sun, 28 Jul 2024 21:57:27 -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 1sYFdX-0004qu-BR for qemu-devel@nongnu.org; Sun, 28 Jul 2024 21:57:20 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sYFdS-0002Tz-Qe for qemu-devel@nongnu.org; Sun, 28 Jul 2024 21:57:18 -0400 Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8AxHuvz9qZmhlQDAA--.11791S3; Mon, 29 Jul 2024 09:57:07 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by front1 (Coremail) with SMTP id qMiowMBx4MXu9qZm1AIEAA--.19410S6; Mon, 29 Jul 2024 09:57:07 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Cc: richard.henderson@linaro.org, maobibo@loongson.cn, philmd@linaro.org Subject: [PATCH 4/5] target/loongarch: Add get_random_tlb_index() Date: Mon, 29 Jul 2024 09:39:38 +0800 Message-Id: <20240729013939.1807982-5-gaosong@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20240729013939.1807982-1-gaosong@loongson.cn> References: <20240729013939.1807982-1-gaosong@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: qMiowMBx4MXu9qZm1AIEAA--.19410S6 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, 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); }