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bh=/fFaUz1XLeopnUn2h0gMRc/EfqneVbJVfK3qdt52W2Y=; b=H43T8oHUomRBmIflXp0o78hflNdzc9UqAJtMeZmwDWZE9Ls3Vh0vSpEy6kGlhEXFK/+6oP SyRtaPWXqvruGLaX2KrNyb8i61nkFzduoPQ5hwKSUUC7CEf2r/4rCwBo4AZ1PzJ7ZvzIL/ SSx598SQvMKfVBbVq4wuqnQJJMAA7rI= X-MC-Unique: 2WK-MCi2MVet9oFIJNHq3A-1 From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH v3 4/4] NOT FOR MERGE target/i386: use x86-64-abi1 CPU model as default on x86_64 Date: Mon, 7 Jun 2021 14:58:43 +0100 Message-Id: <20210607135843.196595-5-berrange@redhat.com> In-Reply-To: <20210607135843.196595-1-berrange@redhat.com> References: <20210607135843.196595-1-berrange@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=berrange@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" 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=216.205.24.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.2, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=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: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Eduardo Habkost , "Michael S. Tsirkin" , Richard Henderson , Cleber Rosa , Paolo Bonzini Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) The only differences between x86-64-abi1 and qemu64 is that the former does not have the 'vme' or 'svm' flags. In practice I don't think we should make this change, because it doesn't especially add any value as-is. The only possible case is around 'svm' because KVM already masks that feature, but TCG allows it. Thus using x86-64-abi1 would mean that KVM and TCG expose a more consistent feature set. Also note that while libvirt can cope with default CPUs changing now, it can't with the default CPU being a model name that it does not already know about. Signed-off-by: Daniel P. Berrang=C3=A9 --- hw/i386/pc_piix.c | 3 +++ hw/i386/pc_q35.c | 3 +++ target/i386/cpu.h | 2 +- 3 files changed, 7 insertions(+), 1 deletion(-) diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index 30b8bd6ea9..8f23bad647 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -444,6 +444,9 @@ static void pc_i440fx_5_2_machine_options(MachineClass = *m) m->is_default =3D false; compat_props_add(m->compat_props, hw_compat_5_2, hw_compat_5_2_len); compat_props_add(m->compat_props, pc_compat_5_2, pc_compat_5_2_len); +#ifdef TARGET_X86_64 + m->default_cpu_type =3D X86_CPU_TYPE_NAME("qemu64"); +#endif } =20 DEFINE_I440FX_MACHINE(v5_2, "pc-i440fx-5.2", NULL, diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index 46a0f196f4..a684c1db3b 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -372,6 +372,9 @@ static void pc_q35_5_2_machine_options(MachineClass *m) m->alias =3D NULL; compat_props_add(m->compat_props, hw_compat_5_2, hw_compat_5_2_len); compat_props_add(m->compat_props, pc_compat_5_2, pc_compat_5_2_len); +#ifdef TARGET_X86_64 + m->default_cpu_type =3D X86_CPU_TYPE_NAME("qemu64"); +#endif } =20 DEFINE_Q35_MACHINE(v5_2, "pc-q35-5.2", NULL, diff --git a/target/i386/cpu.h b/target/i386/cpu.h index ac3abea97c..9b895a63c7 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -1999,7 +1999,7 @@ uint64_t cpu_get_tsc(CPUX86State *env); #define CPU_RESOLVING_TYPE TYPE_X86_CPU =20 #ifdef TARGET_X86_64 -#define TARGET_DEFAULT_CPU_TYPE X86_CPU_TYPE_NAME("qemu64") +#define TARGET_DEFAULT_CPU_TYPE X86_CPU_TYPE_NAME("x86-64-abi1") #else #define TARGET_DEFAULT_CPU_TYPE X86_CPU_TYPE_NAME("qemu32") #endif --=20 2.31.1