From f2edc4f9262e9130d020ef6caef2443e7ae31371 Mon Sep 17 00:00:00 2001 From: Eduardo Habkost Date: Wed, 12 Aug 2020 10:58:04 +0200 Subject: q35: Set max_cpus to 512 RH-Author: Eduardo Habkost Message-id: <20200729180236.627559-5-ehabkost@redhat.com> Patchwork-id: 98076 O-Subject: [RHEL-AV-8.3.0 qemu-kvm PATCH v2 4/4] q35: Set max_cpus to 512 Bugzilla: 1819292 RH-Acked-by: Andrew Jones RH-Acked-by: Thomas Huth RH-Acked-by: David Gibson Increase supported VCPU count for the Q35 machine type. The VCPU count that partners confirmed to work depended on other parameters (especially RAM size), but fluctuated between 640 and 710 VCPUs. I chose to increase the limit to 512 to be conservative, until we find out what exactly prevents larger VMs from booting. Signed-off-by: Eduardo Habkost Signed-off-by: Miroslav Rezanina Signed-off-by: Danilo C. L. de Paula --- 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 d75d6d8805..c709460ab7 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -585,7 +585,7 @@ static void pc_q35_machine_rhel_options(MachineClass *m) machine_class_allow_dynamic_sysbus_dev(m, TYPE_INTEL_IOMMU_DEVICE); machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE); m->alias = "q35"; - m->max_cpus = 384; + m->max_cpus = 512; compat_props_add(m->compat_props, pc_rhel_compat, pc_rhel_compat_len); } -- 2.27.0