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([179.193.10.161]) by smtp.gmail.com with ESMTPSA id ce10-20020a05690c098a00b0059b24bd4f2asm259523ywb.57.2023.11.02.15.44.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 02 Nov 2023 15:44:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1698965098; x=1699569898; darn=nongnu.org; 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=sTkfJDvkYoxTBEbJifhirI/L74ZejS3SnvVD4McotF8=; b=iSm1/Iwk2j6AXzT+7qJvoz8kWfUsEJbgrFWW2FkrRf2X1nlupIi6EfkCZ0feUDyDh/ uOftWWEKA5YLOLcfOJPIQ9NH2sSssdbaC5t55Ck6uqLlCU/VflLMtAVCPyCd17FR6WEF Ub/L0Spc6zosXPK44G1xwCaeVug2t7JOalMBSJV3PaHGsElTIA0LHNPoWoy67GQFWI8d 0Zu5li67DwcOr4pAC69Dp2KwaglHLwjON9jmpmShrueaUbeG3os6QC+h16BZ23TOk6BE gBwuDNUKMMRaBfW8PuoLRv3BF7ExGXx8AriXScFl0jDR/u6XQLkWDrNtRYvKYSzznm1R bnuA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698965098; x=1699569898; 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=sTkfJDvkYoxTBEbJifhirI/L74ZejS3SnvVD4McotF8=; b=d9BePA7xk2FoDAQ5cGudrqRVJLBAAcPTmzBdoHGaN0d/7CpfhgG9WnCjNEBiLyZPOU 5tZfnoeFrIoRYATVCoqSC77sgJ8xVP8HushlMbScGsmdLGMbFIbI+caLIUAcYCCDHKl+ 8SFgr8gB69aloL+ojB24O9KEl+gZvz3Z+iMx10VFQwWtNgORI3gsRWgBBHaThjMrHBpV agyWxadcpvauYc77NP40RRtYhwV6vJJFEb0rsROurUVEiYpiBOfKmsGKujHtnS1EutvF HU76oNxM6j1KbEskr7+xjH//83d1D1iHqRGnXtiyS9SZbINUgU5qSybq4xiGt/Sf3RcM ue8Q== X-Gm-Message-State: AOJu0YyMfeD/eHD055dHJV6TIRIEfo+4mfDlrxNtBvJJGPiTUkmV/WGe Q6Dsvu502CnhDqYuJ0hxfA8VRiPGdEf2bnco+C4= X-Google-Smtp-Source: AGHT+IFLuFKALlq5afzmT/0zQg0lTAhyUN2qQneKhY3IMhKpDJ5A61V1Kpa5MHSWbA+74zSydppVUg== X-Received: by 2002:a81:65c6:0:b0:58a:83cd:115d with SMTP id z189-20020a8165c6000000b0058a83cd115dmr1017127ywb.50.1698965097941; Thu, 02 Nov 2023 15:44:57 -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, Daniel Henrique Barboza Subject: [PATCH v9 03/19] target/riscv/tcg: update priv_ver on user_set extensions Date: Thu, 2 Nov 2023 19:44:29 -0300 Message-ID: <20231102224445.527355-4-dbarboza@ventanamicro.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231102224445.527355-1-dbarboza@ventanamicro.com> References: <20231102224445.527355-1-dbarboza@ventanamicro.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::1133; envelope-from=dbarboza@ventanamicro.com; helo=mail-yw1-x1133.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-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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @ventanamicro.com) X-ZM-MESSAGEID: 1698965150452100009 Content-Type: text/plain; charset="utf-8" We'll add a new bare CPU type that won't have any default priv_ver. This means that the CPU will default to priv_ver =3D 0, i.e. 1.10.0. At the same we'll allow these CPUs to enable extensions at will, but then, if the extension has a priv_ver newer than 1.10, we'll end up disabling it. Users will then need to manually set priv_ver to something other than 1.10 to enable the extensions they want, which is not ideal. Change the setter() of extensions to allow user enabled extensions to bump the priv_ver of the CPU. This will make it convenient for users to enable extensions for CPUs that doesn't set a default priv_ver. This change does not affect any existing CPU: vendor CPUs does not allow extensions to be enabled, and generic CPUs are already set to priv_ver LATEST. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones --- target/riscv/tcg/tcg-cpu.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index 08f8dded56..0e684ab86f 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -114,6 +114,22 @@ static int cpu_cfg_ext_get_min_version(uint32_t ext_of= fset) g_assert_not_reached(); } =20 +static void cpu_validate_multi_ext_priv_ver(CPURISCVState *env, + uint32_t ext_offset) +{ + int ext_priv_ver; + + if (env->priv_ver =3D=3D PRIV_VERSION_LATEST) { + return; + } + + ext_priv_ver =3D cpu_cfg_ext_get_min_version(ext_offset); + + if (env->priv_ver < ext_priv_ver) { + env->priv_ver =3D ext_priv_ver; + } +} + static void cpu_cfg_ext_auto_update(RISCVCPU *cpu, uint32_t ext_offset, bool value) { @@ -742,6 +758,14 @@ static void cpu_set_misa_ext_cfg(Object *obj, Visitor = *v, const char *name, return; } =20 + if (misa_bit =3D=3D RVH && env->priv_ver < PRIV_VERSION_1_12_0) { + /* + * Note: the 'priv_spec' command line option, if present, + * will take precedence over this priv_ver bump. + */ + env->priv_ver =3D PRIV_VERSION_1_12_0; + } + env->misa_ext |=3D misa_bit; env->misa_ext_mask |=3D misa_bit; } else { @@ -871,6 +895,14 @@ static void cpu_set_multi_ext_cfg(Object *obj, Visitor= *v, const char *name, return; } =20 + if (value) { + /* + * Note: the 'priv_spec' command line option, if present, + * will take precedence over this priv_ver bump. + */ + cpu_validate_multi_ext_priv_ver(&cpu->env, multi_ext_cfg->offset); + } + isa_ext_update_enabled(cpu, multi_ext_cfg->offset, value); } =20 --=20 2.41.0