From mboxrd@z Thu Jan 1 00:00:00 1970 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 61DFDEB64D7 for ; Wed, 28 Jun 2023 21:33:09 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qEckd-0001uw-SU; Wed, 28 Jun 2023 17:30:59 -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 1qEckd-0001tX-4O for qemu-riscv@nongnu.org; Wed, 28 Jun 2023 17:30:59 -0400 Received: from mail-oa1-x31.google.com ([2001:4860:4864:20::31]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qEckb-0007x8-8h for qemu-riscv@nongnu.org; Wed, 28 Jun 2023 17:30:58 -0400 Received: by mail-oa1-x31.google.com with SMTP id 586e51a60fabf-1b0156a1c49so15700fac.0 for ; Wed, 28 Jun 2023 14:30:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1687987855; x=1690579855; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Qq5qA7YTGBupPjchdNTXF4wsUj+6lPmEnmsrbTcIfCo=; b=aAjDdTEQONRM6KjecBT/p8kpm5n3u2FyJN1rSBvpkYZxkKtSpl06sVuAgXRSTEEQor 11+JifkkyqbKgT02aodyZL0w8Wugta5VCJTfr14dM+q2fCUF4QJcij6y9pUtnnkjIi7Y WTfQw2m6RubXny7RK9wp4UoWlCt/UklfrXTHndFJD9TjJj5afId8TQwEC+fiZEOIeaG5 B9v7BvgVHUHdWgabUIesoas8FQm7r0Z82wSLCcRXWCEjq/z6YdR5IrtN5huKyDYPtdtq 7/zoI5WWvKgn0hvRkg6iD/oQ+RV4xYLRU05A960o5mrFacLRZ5/+E5LtfUR3KPBguSoN qTpQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687987855; x=1690579855; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Qq5qA7YTGBupPjchdNTXF4wsUj+6lPmEnmsrbTcIfCo=; b=K2NJhy1Dpd0myKmWRbDWNv2W5cOLu/o6zzmyhyigKcrfolRuTy++m74BHqEWXFa0YP NrkLXehfA6AKEb8E0WEZinEmc3QvyQLINEqp+kATPaAJYv1hXvc7wmN+AFgdzVkKsmq+ LQCneA6vE1PUoYTt9QNNcAq66Ry4yCHvUiYVAMGPqBzKEF95/BKwEdEpKmzYbyLOVi3R 0skXYpJc9UC4luFr+o3iUKLh7Y83cnga1H3d9uPcMsbKLxCV4AD+dZImXSBQrRtQfXem 6xrfwwP9yP2/O7Lui0fTzqatKstgKlMbr6TY9/rtnKcwdXqoWSY2vP501wUUrdL8b0Fn OI2g== X-Gm-Message-State: AC+VfDwQUdT1xpFJQpWd5bDetelM0IDs2lnSFV/hjYnN4pOOr+IjjKWf uZIihHP06cRpQD7bYmv43rsekw== X-Google-Smtp-Source: ACHHUZ4JAIKnldIho2x/q2MkqfeBO/tvaOzXsyWgUmSHpeP0EC8Li2vGHgg60qedX/aqoBHLPdMpng== X-Received: by 2002:a05:6870:a442:b0:1b0:579:195f with SMTP id n2-20020a056870a44200b001b00579195fmr10860486oal.47.1687987854809; Wed, 28 Jun 2023 14:30:54 -0700 (PDT) Received: from grind.dc1.ventanamicro.com (201-69-66-110.dial-up.telesp.net.br. [201.69.66.110]) by smtp.gmail.com with ESMTPSA id y17-20020a4a4511000000b0056084a91c74sm832892ooa.24.2023.06.28.14.30.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Jun 2023 14:30:54 -0700 (PDT) From: Daniel Henrique Barboza To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, alistair.francis@wdc.com, bmeng@tinylab.org, liweiwei@iscas.ac.cn, zhiwei_liu@linux.alibaba.com, palmer@rivosinc.com, ajones@ventanamicro.com, philmd@linaro.org, Daniel Henrique Barboza Subject: [PATCH v6 02/20] hw/riscv/virt.c: skip 'mmu-type' FDT if satp mode not set Date: Wed, 28 Jun 2023 18:30:15 -0300 Message-ID: <20230628213033.170315-3-dbarboza@ventanamicro.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230628213033.170315-1-dbarboza@ventanamicro.com> References: <20230628213033.170315-1-dbarboza@ventanamicro.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2001:4860:4864:20::31; envelope-from=dbarboza@ventanamicro.com; helo=mail-oa1-x31.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-riscv@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-riscv-bounces+qemu-riscv=archiver.kernel.org@nongnu.org Sender: qemu-riscv-bounces+qemu-riscv=archiver.kernel.org@nongnu.org The absence of a satp mode in riscv_host_cpu_init() is causing the following error: $ sudo ./qemu/build/qemu-system-riscv64 -machine virt,accel=kvm \ -m 2G -smp 1 -nographic -snapshot \ -kernel ./guest_imgs/Image \ -initrd ./guest_imgs/rootfs_kvm_riscv64.img \ -append "earlycon=sbi root=/dev/ram rw" \ -cpu host ** ERROR:../target/riscv/cpu.c:320:satp_mode_str: code should not be reached Bail out! ERROR:../target/riscv/cpu.c:320:satp_mode_str: code should not be reached Aborted The error is triggered from create_fdt_socket_cpus() in hw/riscv/virt.c. It's trying to get satp_mode_str for a NULL cpu->cfg.satp_mode.map. For this KVM cpu we would need to inherit the satp supported modes from the RISC-V host. At this moment this is not possible because the KVM driver does not support it. And even when it does we can't just let this broken for every other older kernel. Since mmu-type is not a required node, according to [1], skip the 'mmu-type' FDT node if there's no satp_mode set. We'll revisit this logic when we can get satp information from KVM. [1] https://github.com/devicetree-org/dt-schema/blob/main/dtschema/schemas/cpu.yaml Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: Alistair Francis Reviewed-by: Philippe Mathieu-Daudé --- hw/riscv/virt.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index 95708d890e..f025a0fcaf 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -243,13 +243,13 @@ static void create_fdt_socket_cpus(RISCVVirtState *s, int socket, s->soc[socket].hartid_base + cpu); qemu_fdt_add_subnode(ms->fdt, cpu_name); - satp_mode_max = satp_mode_max_from_map( - s->soc[socket].harts[cpu].cfg.satp_mode.map); - sv_name = g_strdup_printf("riscv,%s", - satp_mode_str(satp_mode_max, is_32_bit)); - qemu_fdt_setprop_string(ms->fdt, cpu_name, "mmu-type", sv_name); - g_free(sv_name); - + if (cpu_ptr->cfg.satp_mode.supported != 0) { + satp_mode_max = satp_mode_max_from_map(cpu_ptr->cfg.satp_mode.map); + sv_name = g_strdup_printf("riscv,%s", + satp_mode_str(satp_mode_max, is_32_bit)); + qemu_fdt_setprop_string(ms->fdt, cpu_name, "mmu-type", sv_name); + g_free(sv_name); + } name = riscv_isa_string(cpu_ptr); qemu_fdt_setprop_string(ms->fdt, cpu_name, "riscv,isa", name); -- 2.41.0