From: Paolo Bonzini <pbonzini@redhat.com>
To: Eduardo Habkost <ehabkost@redhat.com>
Cc: Jiri Denemark <jdenemar@redhat.com>, qemu-devel@nongnu.org
Subject: Re: [PATCH] target/i386: add VMX features to named CPU models
Date: Wed, 20 Nov 2019 23:14:42 +0100 [thread overview]
Message-ID: <32679eab-e789-1c43-565c-e783baf6591e@redhat.com> (raw)
In-Reply-To: <20191120211526.GW3812@habkost.net>
On 20/11/19 22:15, Eduardo Habkost wrote:
>
> For how long was this broken? Jiri, was libvirt including +vmx
> in mode=host-model for a long time, or is this something recent?
Could that be related to making nested=1 the default in the kernel? KVM has
static void vmx_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2
*entry)
{
if (func == 1 && nested)
entry->ecx |= bit(X86_FEATURE_VMX);
}
which would date the change to Linux 4.20 (December 2018).
Paolo
prev parent reply other threads:[~2019-11-20 22:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-20 17:37 [PATCH] target/i386: add VMX features to named CPU models Paolo Bonzini
2019-11-20 17:50 ` Daniel P. Berrangé
2019-11-20 17:57 ` Paolo Bonzini
2019-11-20 18:02 ` Daniel P. Berrangé
2019-11-20 18:16 ` Kashyap Chamarthy
2019-11-20 18:45 ` Eduardo Habkost
2019-11-20 20:49 ` Paolo Bonzini
2019-11-20 21:15 ` Eduardo Habkost
2019-11-20 22:14 ` Paolo Bonzini [this message]
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