On Mon, 5 Jun 2023 16:39:06 -0500 Suravee Suthikulpanit <suravee.suthikulpa...@amd.com> wrote:
> 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 > > Cc: Igor Mammedov <imamm...@redhat.com> > Cc: Daniel P. Berrangé <berra...@redhat.com> > Cc: Michael S. Tsirkin <m...@redhat.com> > Cc: Julia Suvorova <jus...@redhat.com> > Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com> > --- > 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 371cca7484..bd862add94 100644 > --- a/hw/i386/pc_q35.c > +++ b/hw/i386/pc_q35.c > @@ -365,7 +365,7 @@ 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 = 1024; did you forgot to preserve value for older machine types? use commit 00d0f9fd6602a2 as reference > } > > static void pc_q35_8_1_machine_options(MachineClass *m)