From patchwork Mon Jul 1 03:37:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: LIU Zhiwei X-Patchwork-Id: 13717540 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 220D4C2BD09 for ; Mon, 1 Jul 2024 03:41:31 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sO7uU-0007k4-RF; Sun, 30 Jun 2024 23:40:58 -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 1sO7uT-0007jd-H7; Sun, 30 Jun 2024 23:40:57 -0400 Received: from out30-133.freemail.mail.aliyun.com ([115.124.30.133]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sO7uR-0006fF-Hs; Sun, 30 Jun 2024 23:40:57 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1719805250; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=KNIJwiicLcM/7Wiog+PY/1oIh+MFNQW3RRxWUQTZVr4=; b=nIHJ72WNkfLSIjFo9Ku1YeQ3k1p0eV8J50t5lv6pCVheWlSsyvUTNnfcjB3Bme5FV6jQWwLlylUeHLPKKOORRpT+E2G9WY9hPrG2AfVA9MgeR87YX6gHppAiXBITMJvvh5JptFgTMhGE9Xn5345ExpWRE9UJVKfqoptRRP9Plog= X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R141e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=maildocker-contentspam033037067110; MF=zhiwei_liu@linux.alibaba.com; NM=1; PH=DS; RN=9; SR=0; TI=SMTPD_---0W9YH8Qb_1719805249; Received: from L-PF1D6DP4-1208.hz.ali.com(mailfrom:zhiwei_liu@linux.alibaba.com fp:SMTPD_---0W9YH8Qb_1719805249) by smtp.aliyun-inc.com; Mon, 01 Jul 2024 11:40:50 +0800 From: LIU Zhiwei To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, palmer@dabbelt.com, alistair.francis@wdc.com, dbarboza@ventanamicro.com, liwei1518@gmail.com, bmeng.cn@gmail.com, TANG Tiancheng , Liu Zhiwei Subject: [PATCH 4/6] target/riscv: Detect sxl to set bit width for RV32 in RV64 Date: Mon, 1 Jul 2024 11:37:20 +0800 Message-Id: <20240701033722.954-5-zhiwei_liu@linux.alibaba.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20240701033722.954-1-zhiwei_liu@linux.alibaba.com> References: <20240701033722.954-1-zhiwei_liu@linux.alibaba.com> MIME-Version: 1.0 Received-SPF: pass client-ip=115.124.30.133; envelope-from=zhiwei_liu@linux.alibaba.com; helo=out30-133.freemail.mail.aliyun.com X-Spam_score_int: -174 X-Spam_score: -17.5 X-Spam_bar: ----------------- X-Spam_report: (-17.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, ENV_AND_HDR_SPF_MATCH=-0.5, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_DEF_SPF_WL=-7.5 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 From: TANG Tiancheng Ensure correct bit width based on sxl when running RV32 on RV64 QEMU. This is required as MMU address translations run in S-mode. Signed-off-by: TANG Tiancheng Reviewed-by: Liu Zhiwei --- target/riscv/cpu_helper.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index 6709622dd3..1af83a0a36 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -887,12 +887,14 @@ static int get_physical_address(CPURISCVState *env, hwaddr *physical, CPUState *cs = env_cpu(env); int va_bits = PGSHIFT + levels * ptidxbits + widened; + int sxlen = 16UL << riscv_cpu_sxl(env); + int sxlen_bytes = sxlen / 8; if (first_stage == true) { target_ulong mask, masked_msbs; - if (TARGET_LONG_BITS > (va_bits - 1)) { - mask = (1L << (TARGET_LONG_BITS - (va_bits - 1))) - 1; + if (sxlen > (va_bits - 1)) { + mask = (1L << (sxlen - (va_bits - 1))) - 1; } else { mask = 0; } @@ -961,7 +963,7 @@ restart: int pmp_prot; int pmp_ret = get_physical_address_pmp(env, &pmp_prot, pte_addr, - sizeof(target_ulong), + sxlen_bytes, MMU_DATA_LOAD, PRV_S); if (pmp_ret != TRANSLATE_SUCCESS) { return TRANSLATE_PMP_FAIL; @@ -1113,7 +1115,7 @@ restart: * it is no longer valid and we must re-walk the page table. */ MemoryRegion *mr; - hwaddr l = sizeof(target_ulong), addr1; + hwaddr l = sxlen_bytes, addr1; mr = address_space_translate(cs->as, pte_addr, &addr1, &l, false, MEMTXATTRS_UNSPECIFIED); if (memory_region_is_ram(mr)) { @@ -1126,6 +1128,11 @@ restart: *pte_pa = pte = updated_pte; #else target_ulong old_pte = qatomic_cmpxchg(pte_pa, pte, updated_pte); + if (riscv_cpu_sxl(env) == MXL_RV32) { + old_pte = qatomic_cmpxchg((uint32_t *)pte_pa, pte, updated_pte); + } else { + old_pte = qatomic_cmpxchg(pte_pa, pte, updated_pte); + } if (old_pte != pte) { goto restart; }