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[83.57.175.68]) by smtp.gmail.com with ESMTPSA id u7sm13826375wrt.67.2021.02.19.09.39.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Feb 2021 09:39:01 -0800 (PST) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 257d245b-316b-4a44-8beb-86ed9a86aa32 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1613756345; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=cia92nKBjrGhWlmymfB9YbxEpc3m+J7hFEI/efRN2yM=; b=B4hXWITd3MjdLXlv+hDENzBkDbtF1k/RhVVeqq0EQHFIg5KW6/GDY7YCXxmHMWtp0LfMbF 37i31N10OEciZT/BSHw4ryts9n6RJRCAi66FBgyRndsVPHMJn0/5AaHxX+6IfWkwqNv0Ql i3PmLrBdebVcPlgX+3xBrlzsZ65Gpcs= X-MC-Unique: 3Q6zqInTO2egoMIp4B7lXQ-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=cia92nKBjrGhWlmymfB9YbxEpc3m+J7hFEI/efRN2yM=; b=kJ9e1etS4jlgapkwjeohMP6j1h5L+amFT1yjMqDGbITuXw+Pw9UtFhy4n9Ea4S8z+Y 3bI2q7xOmnkZOFryqSNxSXpC8PkQAq7VKMbiqmTomm/rm1tEtklVxNUMhT8fIfBViFi/ h0oT+nAmaojLQF/H/9WaNEAWOFSX7AZbpREMIb/eAsRZeV6A9/jdUKhklrzieRWHAGDZ IG6ao7j4Hkxg/zlIm/nGWeLiZncj8pKRTZGYL+lPdPL6AnowJoOTrcW8Qg7jwP2L7dG1 JaHFvDtjRpmZsCAqs9HlJrOkAsE2gcupzwBJHAS6+9R/20UoZV/jdIQcNFvA0dEJZCG+ 2kwQ== X-Gm-Message-State: AOAM5329OC0huu/KEBfc+jqpyX2evKD5HlirFZRQFre2xAV2WYLs1MUJ ic8y4x4nfWyajj1N7C3j41teQe9CrIlMEJSGz/KR/Mvh8DJEiBepctPWrOHBJJuay50jyBPYX1G kXRQAlFQ53rGcA97cttcr2ACH/CA= X-Received: by 2002:a1c:dd09:: with SMTP id u9mr7417310wmg.183.1613756342444; Fri, 19 Feb 2021 09:39:02 -0800 (PST) X-Google-Smtp-Source: ABdhPJxqNL2hop6t3K45dchD7vTDRIpUNwjlifOUsXeOhz1mjGEWf1uUBOU5I8vzusScCU0mSzJMIw== X-Received: by 2002:a1c:dd09:: with SMTP id u9mr7417287wmg.183.1613756342265; Fri, 19 Feb 2021 09:39:02 -0800 (PST) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Aurelien Jarno , Peter Maydell , Anthony Perard , qemu-ppc@nongnu.org, qemu-s390x@nongnu.org, Halil Pasic , Huacai Chen , xen-devel@lists.xenproject.org, Marcel Apfelbaum , David Gibson , qemu-arm@nongnu.org, Stefano Stabellini , Paolo Bonzini , kvm@vger.kernel.org, BALATON Zoltan , Leif Lindholm , Richard Henderson , Radoslaw Biernacki , Alistair Francis , Paul Durrant , Eduardo Habkost , "Michael S. Tsirkin" , Thomas Huth , Jiaxun Yang , =?utf-8?q?Herv=C3=A9_Poussineau?= , Greg Kurz , Christian Borntraeger , Cornelia Huck , "Edgar E. Iglesias" , David Hildenbrand , Mark Cave-Ayland , Aleksandar Rikalo , =?utf-8?q?Philippe_Mathie?= =?utf-8?q?u-Daud=C3=A9?= , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= Subject: [PATCH v2 02/11] hw/boards: Introduce machine_class_valid_for_accelerator() Date: Fri, 19 Feb 2021 18:38:38 +0100 Message-Id: <20210219173847.2054123-3-philmd@redhat.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210219173847.2054123-1-philmd@redhat.com> References: <20210219173847.2054123-1-philmd@redhat.com> MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=philmd@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Introduce the valid_accelerators[] field to express the list of valid accelators a machine can use, and add the machine_class_valid_for_current_accelerator() and machine_class_valid_for_accelerator() methods. Signed-off-by: Philippe Mathieu-Daudé --- include/hw/boards.h | 24 ++++++++++++++++++++++++ hw/core/machine.c | 26 ++++++++++++++++++++++++++ 2 files changed, 50 insertions(+) diff --git a/include/hw/boards.h b/include/hw/boards.h index 68d3d10f6b0..4d08bc12093 100644 --- a/include/hw/boards.h +++ b/include/hw/boards.h @@ -36,6 +36,24 @@ void machine_set_cpu_numa_node(MachineState *machine, const CpuInstanceProperties *props, Error **errp); +/** + * machine_class_valid_for_accelerator: + * @mc: the machine class + * @acc_name: accelerator name + * + * Returns %true if the accelerator is valid for the machine, %false + * otherwise. See #MachineClass.valid_accelerators. + */ +bool machine_class_valid_for_accelerator(MachineClass *mc, const char *acc_name); +/** + * machine_class_valid_for_current_accelerator: + * @mc: the machine class + * + * Returns %true if the accelerator is valid for the current machine, + * %false otherwise. See #MachineClass.valid_accelerators. + */ +bool machine_class_valid_for_current_accelerator(MachineClass *mc); + void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type); /* * Checks that backend isn't used, preps it for exclusive usage and @@ -125,6 +143,11 @@ typedef struct { * should instead use "unimplemented-device" for all memory ranges where * the guest will attempt to probe for a device that QEMU doesn't * implement and a stub device is required. + * @valid_accelerators: + * If this machine supports a specific set of virtualization accelerators, + * this contains a NULL-terminated list of the accelerators that can be + * used. If this field is not set, any accelerator is valid. The QTest + * accelerator is always valid. * @kvm_type: * Return the type of KVM corresponding to the kvm-type string option or * computed based on other criteria such as the host kernel capabilities @@ -166,6 +189,7 @@ struct MachineClass { const char *alias; const char *desc; const char *deprecation_reason; + const char *const *valid_accelerators; void (*init)(MachineState *state); void (*reset)(MachineState *state); diff --git a/hw/core/machine.c b/hw/core/machine.c index 970046f4388..c42d8e382b1 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -518,6 +518,32 @@ static void machine_set_nvdimm_persistence(Object *obj, const char *value, nvdimms_state->persistence_string = g_strdup(value); } +bool machine_class_valid_for_accelerator(MachineClass *mc, const char *acc_name) +{ + const char *const *name = mc->valid_accelerators; + + if (!name) { + return true; + } + if (strcmp(acc_name, "qtest") == 0) { + return true; + } + + for (unsigned i = 0; name[i]; i++) { + if (strcasecmp(acc_name, name[i]) == 0) { + return true; + } + } + return false; +} + +bool machine_class_valid_for_current_accelerator(MachineClass *mc) +{ + AccelClass *ac = ACCEL_GET_CLASS(current_accel()); + + return machine_class_valid_for_accelerator(mc, ac->name); +} + void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type) { QAPI_LIST_PREPEND(mc->allowed_dynamic_sysbus_devices, g_strdup(type));