From patchwork Fri Jun 16 10:01:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Gao X-Patchwork-Id: 1795806 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4QjF8b5yQdz20Wy for ; Fri, 16 Jun 2023 20:02:55 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qA6HU-0007I9-Ea; Fri, 16 Jun 2023 06:02:12 -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 1qA6HR-0007GG-0b for qemu-devel@nongnu.org; Fri, 16 Jun 2023 06:02:09 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qA6HM-0000du-VG for qemu-devel@nongnu.org; Fri, 16 Jun 2023 06:02:08 -0400 Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8AxW+oaM4xkSu8FAA--.12706S3; Fri, 16 Jun 2023 18:02:02 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8DxFOQWM4xkSygdAA--.17116S7; Fri, 16 Jun 2023 18:02:01 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Cc: richard.henderson@linaro.org, Jiajie Chen Subject: [PULL 5/5] target/loongarch: Fix CSR.DMW0-3.VSEG check Date: Fri, 16 Jun 2023 18:01:58 +0800 Message-Id: <20230616100158.1845239-6-gaosong@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230616100158.1845239-1-gaosong@loongson.cn> References: <20230616100158.1845239-1-gaosong@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8DxFOQWM4xkSygdAA--.17116S7 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, 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Jiajie Chen The previous code checks whether the highest 16 bits of virtual address equal to that of CSR.DMW0-3. This is incorrect according to the spec, and is corrected to compare only the highest four bits instead. Signed-off-by: Jiajie Chen Reviewed-by: Song Gao Message-Id: <20230614065556.2397513-1-c@jia.je> Signed-off-by: Song Gao --- target/loongarch/tlb_helper.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/loongarch/tlb_helper.c b/target/loongarch/tlb_helper.c index cce1db1e0a..6e00190547 100644 --- a/target/loongarch/tlb_helper.c +++ b/target/loongarch/tlb_helper.c @@ -185,10 +185,10 @@ static int get_physical_address(CPULoongArchState *env, hwaddr *physical, } plv = kernel_mode | (user_mode << R_CSR_DMW_PLV3_SHIFT); - base_v = address >> TARGET_VIRT_ADDR_SPACE_BITS; + base_v = address >> R_CSR_DMW_VSEG_SHIFT; /* Check direct map window */ for (int i = 0; i < 4; i++) { - base_c = env->CSR_DMW[i] >> TARGET_VIRT_ADDR_SPACE_BITS; + base_c = FIELD_EX64(env->CSR_DMW[i], CSR_DMW, VSEG); if ((plv & env->CSR_DMW[i]) && (base_c == base_v)) { *physical = dmw_va2pa(address); *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;