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From: Eduardo Habkost <ehabkost@redhat.com>
To: kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>,
	Juergen Gross <jgross@suse.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>
Subject: [PATCH v2 3/3] kvm: x86: Increase KVM_SOFT_MAX_VCPUS to 710
Date: Fri,  3 Sep 2021 17:16:00 -0400	[thread overview]
Message-ID: <20210903211600.2002377-4-ehabkost@redhat.com> (raw)
In-Reply-To: <20210903211600.2002377-1-ehabkost@redhat.com>

Support for 710 VCPUs was tested by Red Hat since RHEL-8.4,
so increase KVM_SOFT_MAX_VCPUS to 710.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
Note: I would like to get rid of KVM_SOFT_MAX_VCPUS eventually,
but I am simply bumping it to 710 by now, so we can at least
declare 710 VCPUs as supported while we discuss alternatives to
KVM_SOFT_MAX_VCPUS.
---
 arch/x86/include/asm/kvm_host.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index e30e40399092..98e8538cecbf 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -38,7 +38,7 @@
 #define __KVM_HAVE_ARCH_VCPU_DEBUGFS
 
 #define KVM_MAX_VCPUS 1024
-#define KVM_SOFT_MAX_VCPUS 240
+#define KVM_SOFT_MAX_VCPUS 710
 
 /*
  * In x86, the VCPU ID corresponds to the APIC ID, and APIC IDs
-- 
2.31.1


  parent reply	other threads:[~2021-09-03 21:16 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-03 21:15 [PATCH v2 0/3] kvm: x86: Set KVM_MAX_VCPUS=1024, KVM_SOFT_MAX_VCPUS=710 Eduardo Habkost
2021-09-03 21:15 ` [PATCH v2 1/3] kvm: x86: Set KVM_MAX_VCPU_ID to 4*KVM_MAX_VCPUS Eduardo Habkost
2021-09-03 21:15 ` [PATCH v2 2/3] kvm: x86: Increase MAX_VCPUS to 1024 Eduardo Habkost
2021-09-03 21:16 ` Eduardo Habkost [this message]
2021-09-06 10:12 ` [PATCH v2 0/3] kvm: x86: Set KVM_MAX_VCPUS=1024, KVM_SOFT_MAX_VCPUS=710 Paolo Bonzini
2021-09-11  0:30   ` Sean Christopherson
2021-09-11 15:26     ` Eduardo Habkost
2021-09-13  5:09       ` Juergen Gross

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