46 lines
1.6 KiB
Diff
46 lines
1.6 KiB
Diff
From f2edc4f9262e9130d020ef6caef2443e7ae31371 Mon Sep 17 00:00:00 2001
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From: Eduardo Habkost <ehabkost@redhat.com>
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Date: Wed, 12 Aug 2020 10:58:04 +0200
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Subject: q35: Set max_cpus to 512
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RH-Author: Eduardo Habkost <ehabkost@redhat.com>
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Message-id: <20200729180236.627559-5-ehabkost@redhat.com>
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Patchwork-id: 98076
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O-Subject: [RHEL-AV-8.3.0 qemu-kvm PATCH v2 4/4] q35: Set max_cpus to 512
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Bugzilla: 1819292
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RH-Acked-by: Andrew Jones <drjones@redhat.com>
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: David Gibson <dgibson@redhat.com>
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Increase supported VCPU count for the Q35 machine type.
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The VCPU count that partners confirmed to work depended on other
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parameters (especially RAM size), but fluctuated between 640 and
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710 VCPUs. I chose to increase the limit to 512 to be
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conservative, until we find out what exactly prevents larger VMs
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from booting.
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Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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hw/i386/pc_q35.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
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index d75d6d8805..c709460ab7 100644
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--- a/hw/i386/pc_q35.c
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+++ b/hw/i386/pc_q35.c
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@@ -585,7 +585,7 @@ static void pc_q35_machine_rhel_options(MachineClass *m)
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machine_class_allow_dynamic_sysbus_dev(m, TYPE_INTEL_IOMMU_DEVICE);
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machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE);
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m->alias = "q35";
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- m->max_cpus = 384;
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+ m->max_cpus = 512;
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compat_props_add(m->compat_props, pc_rhel_compat, pc_rhel_compat_len);
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}
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--
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2.27.0
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