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130 lines
4.6 KiB
130 lines
4.6 KiB
From 1f8528b71d96c01dd6106f11681f4a4e2776ef5f Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= <berrange@redhat.com>
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Date: Mon, 21 Mar 2022 12:05:42 +0000
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Subject: [PATCH 06/18] target/arm: deprecate named CPU models
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Daniel P. Berrangé <berrange@redhat.com>
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RH-MergeRequest: 94: i386, aarch64, s390x: deprecate many named CPU models
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RH-Commit: [6/6] afddeb9e898206fd04499f01c48caf7dc1a8b8ef (berrange/centos-src-qemu)
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RH-Bugzilla: 2060839
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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KVM requires use of the 'host' CPU model, so named CPU models are only
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needed for TCG. Since we don't consider TCG to be supported we can
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deprecate all the named CPU models. TCG users can rely on 'max' model.
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Note: this has the effect of deprecating the default built-in CPU
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model 'cortex-a57'. Applications using QEMU are expected to make an
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explicit choice about which CPU model they want, since no builtin
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default can suit all purposes.
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https://bugzilla.redhat.com/show_bug.cgi?id=2060839
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Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
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---
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target/arm/cpu-qom.h | 1 +
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target/arm/cpu.c | 5 +++++
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target/arm/cpu.h | 2 ++
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target/arm/cpu64.c | 8 +++++++-
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target/arm/helper.c | 2 ++
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5 files changed, 17 insertions(+), 1 deletion(-)
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diff --git a/target/arm/cpu-qom.h b/target/arm/cpu-qom.h
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index 64c44cef2d..82e97249bc 100644
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--- a/target/arm/cpu-qom.h
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+++ b/target/arm/cpu-qom.h
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@@ -35,6 +35,7 @@ typedef struct ARMCPUInfo {
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const char *name;
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void (*initfn)(Object *obj);
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void (*class_init)(ObjectClass *oc, void *data);
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+ const char *deprecation_note;
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} ARMCPUInfo;
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void arm_cpu_register(const ARMCPUInfo *info);
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diff --git a/target/arm/cpu.c b/target/arm/cpu.c
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index 5d4ca7a227..c74b0fb462 100644
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--- a/target/arm/cpu.c
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+++ b/target/arm/cpu.c
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@@ -2105,8 +2105,13 @@ static void arm_cpu_instance_init(Object *obj)
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static void cpu_register_class_init(ObjectClass *oc, void *data)
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{
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ARMCPUClass *acc = ARM_CPU_CLASS(oc);
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+ CPUClass *cc = CPU_CLASS(oc);
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acc->info = data;
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+
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+ if (acc->info->deprecation_note) {
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+ cc->deprecation_note = acc->info->deprecation_note;
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+ }
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}
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void arm_cpu_register(const ARMCPUInfo *info)
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diff --git a/target/arm/cpu.h b/target/arm/cpu.h
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index 23879de5fa..c0c9f680e5 100644
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--- a/target/arm/cpu.h
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+++ b/target/arm/cpu.h
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@@ -33,6 +33,8 @@
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#define KVM_HAVE_MCE_INJECTION 1
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#endif
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+#define RHEL_CPU_DEPRECATION "use 'host' / 'max'"
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+
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#define EXCP_UDEF 1 /* undefined instruction */
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#define EXCP_SWI 2 /* software interrupt */
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#define EXCP_PREFETCH_ABORT 3
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diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
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index e80b831073..c8f152891c 100644
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--- a/target/arm/cpu64.c
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+++ b/target/arm/cpu64.c
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@@ -975,7 +975,8 @@ static void aarch64_a64fx_initfn(Object *obj)
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#endif /* disabled for RHEL */
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static const ARMCPUInfo aarch64_cpus[] = {
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- { .name = "cortex-a57", .initfn = aarch64_a57_initfn },
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+ { .name = "cortex-a57", .initfn = aarch64_a57_initfn,
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+ .deprecation_note = RHEL_CPU_DEPRECATION },
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#if 0 /* Disabled for Red Hat Enterprise Linux */
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{ .name = "cortex-a53", .initfn = aarch64_a53_initfn },
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{ .name = "cortex-a72", .initfn = aarch64_a72_initfn },
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@@ -1052,8 +1053,13 @@ static void aarch64_cpu_instance_init(Object *obj)
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static void cpu_register_class_init(ObjectClass *oc, void *data)
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{
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ARMCPUClass *acc = ARM_CPU_CLASS(oc);
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+ CPUClass *cc = CPU_CLASS(oc);
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acc->info = data;
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+
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+ if (acc->info->deprecation_note) {
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+ cc->deprecation_note = acc->info->deprecation_note;
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+ }
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}
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void aarch64_cpu_register(const ARMCPUInfo *info)
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diff --git a/target/arm/helper.c b/target/arm/helper.c
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index 7d14650615..3d34f63e49 100644
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--- a/target/arm/helper.c
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+++ b/target/arm/helper.c
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@@ -8560,6 +8560,7 @@ void arm_cpu_list(void)
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static void arm_cpu_add_definition(gpointer data, gpointer user_data)
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{
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ObjectClass *oc = data;
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+ CPUClass *cc = CPU_CLASS(oc);
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CpuDefinitionInfoList **cpu_list = user_data;
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CpuDefinitionInfo *info;
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const char *typename;
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@@ -8569,6 +8570,7 @@ static void arm_cpu_add_definition(gpointer data, gpointer user_data)
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info->name = g_strndup(typename,
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strlen(typename) - strlen("-" TYPE_ARM_CPU));
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info->q_typename = g_strdup(typename);
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+ info->deprecated = !!cc->deprecation_note;
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QAPI_LIST_PREPEND(*cpu_list, info);
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}
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--
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2.35.3
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