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[PULL 33/53] pc: q35: Bump max_cpus to 1024
From: |
Michael S. Tsirkin |
Subject: |
[PULL 33/53] pc: q35: Bump max_cpus to 1024 |
Date: |
Mon, 26 Jun 2023 08:29:28 -0400 |
From: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
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 argument
Also, keep max_cpus at 288 for machine version 8.0 and older.
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Daniel P. Berrangé <berrange@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Julia Suvorova <jusual@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Message-Id: <20230607205717.737749-3-suravee.suthikulpanit@amd.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
---
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 cf68b80974..11a7084ea1 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -368,12 +368,12 @@ static void pc_q35_machine_options(MachineClass *m)
m->default_nic = "e1000e";
m->default_kernel_irqchip_split = false;
m->no_floppy = 1;
+ m->max_cpus = 1024;
m->no_parallel = !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 = 288;
}
static void pc_q35_8_1_machine_options(MachineClass *m)
@@ -396,6 +396,7 @@ static void pc_q35_8_0_machine_options(MachineClass *m)
/* For pc-q35-8.0 and older, use SMBIOS 2.8 by default */
pcmc->default_smbios_ep_type = SMBIOS_ENTRY_POINT_TYPE_32;
+ m->max_cpus = 288;
}
DEFINE_Q35_MACHINE(v8_0, "pc-q35-8.0", NULL,
--
MST
- [PULL 20/53] hw/virtio/virtio-iommu: Use target-agnostic qemu_target_page_mask(), (continued)
- [PULL 20/53] hw/virtio/virtio-iommu: Use target-agnostic qemu_target_page_mask(), Michael S. Tsirkin, 2023/06/26
- [PULL 37/53] include/hw/virtio: make some VirtIODevice const, Michael S. Tsirkin, 2023/06/26
- [PULL 21/53] hw/virtio: Remove unnecessary 'virtio-access.h' header, Michael S. Tsirkin, 2023/06/26
- [PULL 26/53] virtio-mem: Simplify bitmap handling and virtio_mem_set_block_state(), Michael S. Tsirkin, 2023/06/26
- [PULL 28/53] vdpa: move CVQ isolation check to net_init_vhost_vdpa, Michael S. Tsirkin, 2023/06/26
- [PULL 29/53] cryptodev: fix memory leak during stats query, Michael S. Tsirkin, 2023/06/26
- [PULL 31/53] hw/i386/pc: Default to use SMBIOS 3.0 for newer machine models, Michael S. Tsirkin, 2023/06/26
- [PULL 17/53] hw/virtio: Introduce VHOST_VSOCK_COMMON symbol in Kconfig, Michael S. Tsirkin, 2023/06/26
- [PULL 19/53] hw/virtio/vhost-vsock: Include missing 'virtio/virtio-bus.h' header, Michael S. Tsirkin, 2023/06/26
- [PULL 33/53] pc: q35: Bump max_cpus to 1024,
Michael S. Tsirkin <=
- [PULL 41/53] vdpa: Add vhost_vdpa_net_load_offloads(), Michael S. Tsirkin, 2023/06/26
- [PULL 42/53] vdpa: Allow VIRTIO_NET_F_CTRL_GUEST_OFFLOADS in SVQ, Michael S. Tsirkin, 2023/06/26
- [PULL 48/53] vhost-user: fully use new backend/frontend naming, Michael S. Tsirkin, 2023/06/26
- [PULL 51/53] intel_iommu: Fix address space unmap, Michael S. Tsirkin, 2023/06/26
- [PULL 34/53] vdpa: do not block migration if device has cvq and x-svq=on, Michael S. Tsirkin, 2023/06/26
- [PULL 39/53] hw/net/virtio-net: make some VirtIONet const, Michael S. Tsirkin, 2023/06/26
- [PULL 40/53] virtio-net: expose virtio_net_supported_guest_offloads(), Michael S. Tsirkin, 2023/06/26
- [PULL 46/53] hw/i386/pc: Clean up pc_machine_initfn, Michael S. Tsirkin, 2023/06/26
- [PULL 52/53] vhost_net: add an assertion for TAP client backends, Michael S. Tsirkin, 2023/06/26