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([179.93.21.205]) by smtp.gmail.com with ESMTPSA id c2-20020a170902848200b001d09c539c96sm7494897plo.229.2023.12.18.04.53.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Dec 2023 04:53:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1702904035; x=1703508835; 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=ydruLMfiESG3aSFT2NTZZn+okESydVOkFbgi5DTMOpA=; b=TJsYccLctZXtYBh6Az2Z7ZGlABiFUYquSoHdNdtlofxLCOCgyzbBlHlFUKvXJcFJlS pmwbsvpL+GYmdrLjEDwTTf1kgqEQNZ3I7Te8DufgvoQj0+OVQ1qQJuPRCrHk+beYoiCb bp7gYjj0vNBw4xMsFR4gdB8zSyxluH/56tHHP5ThdtVK2BwIPWKvk4jNwVbfs8vDWmsq QnnWkfuOeYDbv/3CAICqYthtTgYpej1eDcr2BCHf0CJmLhtDh9fFjbZe1lRJ78WM/H14 sMh8s1zjHNhRTe1XMxaaJ7ZdmP8wPEEkmQEIaJusdxb1k+wGiasqviwZHxHJopo8kA0H OUsA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702904035; x=1703508835; 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=ydruLMfiESG3aSFT2NTZZn+okESydVOkFbgi5DTMOpA=; b=UlqioBZ28CPLuL06UTDiKwO0O+2p/aRl1Kub8h7kaezasLKkxhWiQS6H2LUGs7F3b+ PPU4gmDi5fsc2uzkTp+sG1u6J0pBVODYRxOio2ByRZdYp/axU3YGENzV4rz09u+TaYlx BO9oPrbPSe/6bke2B/VCFr+XjjXu5EIJ+jghQyT7OvmobX9SwMNEq+rjZfR+62OahmBw BhdeEFws0oHBbj+WBBHVZ9w9JeL5OPDgabDom9hlvS44L0YgaXfc9ob48+FVoG+trv9J S0xImE7QyBKnx9sH/x6ghs3MU7WXbgXGaHxqQfh0p5KUq4lQ161roaYqpl2r+JrZ9fEu rS5g== X-Gm-Message-State: AOJu0YzjTS+5a4+GeKLWC77YJ0QvUfBj9mj6/Xc8pbDzjOUch5UWY/S5 kgi987zf3xwu2DSMfZUwUkCV1XU0y4EniwkYjBI= X-Google-Smtp-Source: AGHT+IGcUnGgUxU1CZ15kPLmoYiocILXzQIOve/APWmydK8gPaz7vqe/NXpKoUSJqpZ+rpiVg0yoUg== X-Received: by 2002:a17:903:22d1:b0:1d3:8ed4:de01 with SMTP id y17-20020a17090322d100b001d38ed4de01mr1941430plg.4.1702904035567; Mon, 18 Dec 2023 04:53:55 -0800 (PST) From: Daniel Henrique Barboza To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, alistair.francis@wdc.com, bmeng@tinylab.org, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, palmer@rivosinc.com, ajones@ventanamicro.com, Daniel Henrique Barboza Subject: [PATCH v13 03/26] target/riscv/tcg: update priv_ver on user_set extensions Date: Mon, 18 Dec 2023 09:53:11 -0300 Message-ID: <20231218125334.37184-4-dbarboza@ventanamicro.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231218125334.37184-1-dbarboza@ventanamicro.com> References: <20231218125334.37184-1-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::629; envelope-from=dbarboza@ventanamicro.com; helo=mail-pl1-x629.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: 1702904338797100003 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 Reviewed-by: Alistair Francis --- 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 7670120673..aee98db6f8 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -114,6 +114,26 @@ static int cpu_cfg_ext_get_min_version(uint32_t ext_of= fset) g_assert_not_reached(); } =20 +static void cpu_bump_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) { + /* + * Note: the 'priv_spec' command line option, if present, + * will take precedence over this priv_ver bump. + */ + env->priv_ver =3D ext_priv_ver; + } +} + static void cpu_cfg_ext_auto_update(RISCVCPU *cpu, uint32_t ext_offset, bool value) { @@ -757,6 +777,14 @@ 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 { @@ -886,6 +914,10 @@ static void cpu_set_multi_ext_cfg(Object *obj, Visitor= *v, const char *name, return; } =20 + if (value) { + cpu_bump_multi_ext_priv_ver(&cpu->env, multi_ext_cfg->offset); + } + isa_ext_update_enabled(cpu, multi_ext_cfg->offset, value); } =20 --=20 2.43.0