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[201.69.66.110]) by smtp.gmail.com with ESMTPSA id m12-20020a056870a10c00b001b03fbfa0c5sm1831419oae.39.2023.06.26.15.03.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Jun 2023 15:03:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1687816983; x=1690408983; 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=3cm5y2gWYt5OAiZ+hxblm6TFm4mb5jHZNaimv5+Czdw=; b=NH28+1/nAe93IXz4bk1bK+n6aGPh/RsyiVMviOf8XwC5GEWbUx0sM7hgZ16Jjjbwin yNgsNbDyzxscPZC9z8rIYmts1A/wVJLl+kN4UnsBUV1sy46cUFf4BzpOvCUqGfzo0+bn +VHxkqjfaiIBG0Tubz4hkcDprFIjbt/ocp7J0YzJOyJNigLvSzWjBkLrYQVhkFI62dTu cN1Z9K0vioIyemDJGrzmSC0c0DLCnzWqSt7IHGWUmYG1eKhlT3QLb6CT3/lsqTsedNR4 OZP+mGolVNrc3433b2kL+Jtd1/hGdqOzeBhadhE6aRCGN1JyGLibWWpAQom/PJK0Ule6 u2aQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687816983; x=1690408983; 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=3cm5y2gWYt5OAiZ+hxblm6TFm4mb5jHZNaimv5+Czdw=; b=KmCxQw5QzjoX0MNdhAfSM3m/7ffvB3QYA0OzPoTan6AU1Rj1mef7nGXsvb7Vp7ffpX JFq2ko3sQvnLBCYDHdn2+pWWHjaJ61pcy9BXUMBLyLlIrMYQ+UmqQ/P6dfT6KUmfpEpk X7rNqKoMjVqFJJrTKdhn46bUwDuRCrXFa4mVhqtVYZHUyfRdb9Nx3bJRSC7GY5qtLyuB 81WgEma4hr7JNhh6HaLjzzqs/sGKJxYfuz1C9mSSXGc108RiLDHng3XFxPKxiGCepVKU Bcnd6Q0DXa4IoLfveok/qimzLQce6rbxzRw9OvAvt47Jiqjvbr5FWDJrYgUJleJ0pgVa ZVSw== X-Gm-Message-State: AC+VfDyZLEDgXAAfieI1OaxHArI5/z2pHz3S7FVQA+LNByhm/NuBlwUD S9iJCM0TRtjry7aQPPUgcGDh3OTNGfGSuxoOJ60= X-Google-Smtp-Source: ACHHUZ4eFyo8VZjOfMiz1+isxGIesklvNXrkocFXfO7tQYWy5IVbLWosCdxWL/PzR+mGx94he171SA== X-Received: by 2002:a05:6870:d454:b0:1ad:4bff:fa48 with SMTP id j20-20020a056870d45400b001ad4bfffa48mr11818033oag.58.1687816983509; Mon, 26 Jun 2023 15:03:03 -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 v4 17/19] target/riscv: update multi-letter extension KVM properties Date: Mon, 26 Jun 2023 19:02:07 -0300 Message-ID: <20230626220209.22142-18-dbarboza@ventanamicro.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230626220209.22142-1-dbarboza@ventanamicro.com> References: <20230626220209.22142-1-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=2001:4860:4864:20::2e; envelope-from=dbarboza@ventanamicro.com; helo=mail-oa1-x2e.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: 1687817180394100002 Content-Type: text/plain; charset="utf-8" We're now ready to update the multi-letter extensions status for KVM. kvm_riscv_update_cpu_cfg_isa_ext() is called called during vcpu creation time to verify which user options changes host defaults (via the 'user_set' flag) and tries to write them back to KVM. Failure to commit a change to KVM is only ignored in case KVM doesn't know about the extension (-EINVAL error code) and the user wanted to disable the given extension. Otherwise we're going to abort the boot process. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones --- target/riscv/kvm.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c index 376bbc68b4..6eebeb123a 100644 --- a/target/riscv/kvm.c +++ b/target/riscv/kvm.c @@ -273,6 +273,32 @@ static void kvm_cpu_set_multi_ext_cfg(Object *obj, Vis= itor *v, kvm_cpu_cfg_set(cpu, multi_ext_cfg, value); } =20 +static void kvm_riscv_update_cpu_cfg_isa_ext(RISCVCPU *cpu, CPUState *cs) +{ + CPURISCVState *env =3D &cpu->env; + uint64_t id, reg; + int i, ret; + + for (i =3D 0; i < ARRAY_SIZE(kvm_multi_ext_cfgs); i++) { + KVMCPUConfig *multi_ext_cfg =3D &kvm_multi_ext_cfgs[i]; + + if (!multi_ext_cfg->user_set) { + continue; + } + + id =3D kvm_riscv_reg_id(env, KVM_REG_RISCV_ISA_EXT, + multi_ext_cfg->kvm_reg_id); + reg =3D kvm_cpu_cfg_get(cpu, multi_ext_cfg); + ret =3D kvm_set_one_reg(cs, id, ®); + if (ret !=3D 0) { + error_report("Unable to %s extension %s in KVM, error %d", + reg ? "enable" : "disable", + multi_ext_cfg->name, ret); + exit(EXIT_FAILURE); + } + } +} + static void kvm_riscv_add_cpu_user_properties(Object *cpu_obj) { int i; @@ -792,6 +818,7 @@ int kvm_arch_init_vcpu(CPUState *cs) } =20 kvm_riscv_update_cpu_misa_ext(cpu, cs); + kvm_riscv_update_cpu_cfg_isa_ext(cpu, cs); =20 return ret; } --=20 2.41.0