Igor,
On 5/9/2022 2:12 PM, Igor Mammedov wrote:
On Wed, 4 May 2022 08:16:39 -0500
Suravee Suthikulpanit<[email protected]> wrote:
This is the maximum number of vCPU supported by
the AMD x2APIC virtualization.
Signed-off-by: Suravee Suthikulpanit<[email protected]>
---
hw/i386/pc_q35.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 302288342a..e82b1c690d 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -357,7 +357,7 @@ static void pc_q35_machine_options(MachineClass *m)
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;
+ m->max_cpus = 512;
Maybe we should bump it to KVM VCPU maximum,
Grepping through the Linux kernel source, the KVM_MAX_VCPUS macro is defined
per architecture.
AFAICT, the absolute maximum is for x86, which is 1024. Does that sound about
right?
and make sure we error out if asked for combination of
hardware/irqchip is not usable.
Could you please elaborate on this part?
Thanks,
Suravee
