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envelope-from=Suravee.Suthikulpanit@amd.com; helo=NAM02-DM3-obe.outbound.protection.outlook.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, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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 @amd.com) X-ZM-MESSAGEID: 1686106295978100011 Since KVM_MAX_VCPUS is currently defined to 1024 for x86 as shown in arch/x86/include/asm/kvm_host.h, update QEMU limits to the same number. In case KVM could not support the specified number of vcpus, QEMU would return the following error message: qemu-system-x86_64: kvm_init_vcpu: kvm_get_vcpu failed (xxx): Invalid arg= ument Also, keep max_cpus at 288 for machine version 8.0 and older. Cc: Igor Mammedov Cc: Daniel P. Berrang=C3=A9 Cc: Michael S. Tsirkin Cc: Julia Suvorova Signed-off-by: Suravee Suthikulpanit Reviewed-by: Igor Mammedov --- hw/i386/pc_q35.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index 371cca7484..63866a16e0 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -360,12 +360,12 @@ static void pc_q35_machine_options(MachineClass *m) m->default_nic =3D "e1000e"; m->default_kernel_irqchip_split =3D false; m->no_floppy =3D 1; + m->max_cpus =3D 1024; m->no_parallel =3D !module_object_class_by_name(TYPE_ISA_PARALLEL); machine_class_allow_dynamic_sysbus_dev(m, TYPE_AMD_IOMMU_DEVICE); machine_class_allow_dynamic_sysbus_dev(m, TYPE_INTEL_IOMMU_DEVICE); machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE); machine_class_allow_dynamic_sysbus_dev(m, TYPE_VMBUS_BRIDGE); - m->max_cpus =3D 288; } =20 static void pc_q35_8_1_machine_options(MachineClass *m) @@ -388,6 +388,7 @@ static void pc_q35_8_0_machine_options(MachineClass *m) =20 /* For pc-q35-8.0 and older, use SMBIOS 2.8 by default */ pcmc->default_smbios_ep_type =3D SMBIOS_ENTRY_POINT_TYPE_32; + m->max_cpus =3D 288; } =20 DEFINE_Q35_MACHINE(v8_0, "pc-q35-8.0", NULL, --=20 2.34.1