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 X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 40187C433E7 for ; Thu, 15 Oct 2020 16:53:56 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id A97862068D for ; Thu, 15 Oct 2020 16:53:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Fvjopy16" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A97862068D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:33766 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kT6Vm-0002ls-Bg for qemu-devel@archiver.kernel.org; Thu, 15 Oct 2020 12:53:54 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42816) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kT6Na-0004NU-MG for qemu-devel@nongnu.org; Thu, 15 Oct 2020 12:45:28 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:31297) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kT6NR-0000XL-Tr for qemu-devel@nongnu.org; Thu, 15 Oct 2020 12:45:26 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1602780316; 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=Dml4u4hzBMkhrKuVpNMnp+Qa3nDbJZGUvC7br4Ju0N0=; b=Fvjopy16reUL1ytzNf4YgtWjL+JgQEHBzsyLJCV8ZGVidELU6S9RW8mtENBrO47J5ZJ4uA Yfu0++tBryMrbZgaXytFKvM7+FZ1MDSdQu0Rql/lhz7sRCV8ng6sOdK6O+UQUmXqOKsWSM bCdo+rHeQq6GsXRdQqnvvu0ewTxA+h4= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-550-29PkpWkCOnONas_RomBwDw-1; Thu, 15 Oct 2020 12:45:14 -0400 X-MC-Unique: 29PkpWkCOnONas_RomBwDw-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6F6821074665; Thu, 15 Oct 2020 16:45:13 +0000 (UTC) Received: from localhost (ovpn-66-44.rdu2.redhat.com [10.10.66.44]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3BE6476673; Thu, 15 Oct 2020 16:45:13 +0000 (UTC) From: Eduardo Habkost To: qemu-devel@nongnu.org, Peter Maydell Subject: [PULL 8/9] cpu: Introduce CPU model deprecation API Date: Thu, 15 Oct 2020 12:45:00 -0400 Message-Id: <20201015164501.462775-9-ehabkost@redhat.com> In-Reply-To: <20201015164501.462775-1-ehabkost@redhat.com> References: <20201015164501.462775-1-ehabkost@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=ehabkost@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=63.128.21.124; envelope-from=ehabkost@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/15 02:10:02 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini , Igor Mammedov , Robert Hoo , Eduardo Habkost , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Robert Hoo Implement the ability of marking some versions deprecated. When that CPU model is chosen, print a warning. The warning message can be customized, e.g. suggesting an alternative CPU model to be used instead. The deprecation message will be printed by x86_cpu_list_entry(), e.g. '-cpu help'. QMP command 'query-cpu-definitions' will return a bool value indicating the deprecation status. Signed-off-by: Robert Hoo Message-Id: <1600758855-80046-1-git-send-email-robert.hu@linux.intel.com> [ehabkost: reword commit message] [ehabkost: Handle NULL cpu_type] Signed-off-by: Eduardo Habkost --- qapi/machine-target.json | 7 ++++++- include/hw/core/cpu.h | 3 +++ hw/core/machine.c | 12 ++++++++++-- target/i386/cpu.c | 8 ++++++++ 4 files changed, 27 insertions(+), 3 deletions(-) diff --git a/qapi/machine-target.json b/qapi/machine-target.json index 698850cc78..fec3bb8679 100644 --- a/qapi/machine-target.json +++ b/qapi/machine-target.json @@ -286,6 +286,10 @@ # in the VM configuration, because aliases may stop being # migration-safe in the future (since 4.1) # +# @deprecated: If true, this CPU model is deprecated and may be removed in +# in some future version of QEMU according to the QEMU deprecation +# policy. (since 5.2) +# # @unavailable-features is a list of QOM property names that # represent CPU model attributes that prevent the CPU from running. # If the QOM property is read-only, that means there's no known @@ -310,7 +314,8 @@ 'static': 'bool', '*unavailable-features': [ 'str' ], 'typename': 'str', - '*alias-of' : 'str' }, + '*alias-of' : 'str', + 'deprecated' : 'bool' }, 'if': 'defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_I386) || defined(TARGET_S390X) || defined(TARGET_MIPS)' } ## diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h index 4879f25026..9c3a45ad7b 100644 --- a/include/hw/core/cpu.h +++ b/include/hw/core/cpu.h @@ -155,6 +155,8 @@ struct TranslationBlock; * @disas_set_info: Setup architecture specific components of disassembly info * @adjust_watchpoint_address: Perform a target-specific adjustment to an * address before attempting to match it against watchpoints. + * @deprecation_note: If this CPUClass is deprecated, this field provides + * related information. * * Represents a CPU family or model. */ @@ -221,6 +223,7 @@ struct CPUClass { vaddr (*adjust_watchpoint_address)(CPUState *cpu, vaddr addr, int len); void (*tcg_initialize)(void); + const char *deprecation_note; /* Keep non-pointer data at the end to minimize holes. */ int gdb_num_core_regs; bool gdb_stop_before_watchpoint; diff --git a/hw/core/machine.c b/hw/core/machine.c index 7e2f4ec08e..d740a7e963 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -1087,6 +1087,8 @@ MemoryRegion *machine_consume_memdev(MachineState *machine, void machine_run_board_init(MachineState *machine) { MachineClass *machine_class = MACHINE_GET_CLASS(machine); + ObjectClass *oc = object_class_by_name(machine->cpu_type); + CPUClass *cc; if (machine->ram_memdev_id) { Object *o; @@ -1106,11 +1108,10 @@ void machine_run_board_init(MachineState *machine) * specified a CPU with -cpu check here that the user CPU is supported. */ if (machine_class->valid_cpu_types && machine->cpu_type) { - ObjectClass *class = object_class_by_name(machine->cpu_type); int i; for (i = 0; machine_class->valid_cpu_types[i]; i++) { - if (object_class_dynamic_cast(class, + if (object_class_dynamic_cast(oc, machine_class->valid_cpu_types[i])) { /* The user specificed CPU is in the valid field, we are * good to go. @@ -1133,6 +1134,13 @@ void machine_run_board_init(MachineState *machine) } } + /* Check if CPU type is deprecated and warn if so */ + cc = CPU_CLASS(oc); + if (cc && cc->deprecation_note) { + warn_report("CPU model %s is deprecated -- %s", machine->cpu_type, + cc->deprecation_note); + } + machine_class->init(machine); } diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 25ec64124e..2e3ee41c56 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1633,6 +1633,7 @@ typedef struct X86CPUDefinition { * If NULL, version 1 will be registered automatically. */ const X86CPUVersionDefinition *versions; + const char *deprecation_note; } X86CPUDefinition; /* Reference to a specific CPU model version */ @@ -4990,6 +4991,11 @@ static void x86_cpu_definition_entry(gpointer data, gpointer user_data) info->migration_safe = cc->migration_safe; info->has_migration_safe = true; info->q_static = cc->static_model; + if (cc->model && cc->model->cpudef->deprecation_note) { + info->deprecated = true; + } else { + info->deprecated = false; + } /* * Old machine types won't report aliases, so that alias translation * doesn't break compatibility with previous QEMU versions. @@ -5380,9 +5386,11 @@ static void x86_cpu_cpudef_class_init(ObjectClass *oc, void *data) { X86CPUModel *model = data; X86CPUClass *xcc = X86_CPU_CLASS(oc); + CPUClass *cc = CPU_CLASS(oc); xcc->model = model; xcc->migration_safe = true; + cc->deprecation_note = model->cpudef->deprecation_note; } static void x86_register_cpu_model_type(const char *name, X86CPUModel *model) -- 2.28.0