From: Paolo Bonzini <pbonzini@redhat.com>
To: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: "Jim Mattson" <jmattson@google.com>,
"kvm list" <kvm@vger.kernel.org>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"the arch/x86 maintainers" <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH RFC] x86/kvm/lapic: always disable MMIO interface in x2APIC mode
Date: Thu, 2 Aug 2018 15:34:37 +0200 [thread overview]
Message-ID: <8db7b58a-0b20-e587-a215-996ada83bc4c@redhat.com> (raw)
In-Reply-To: <87wot899qw.fsf@vitty.brq.redhat.com>
On 02/08/2018 15:30, Vitaly Kuznetsov wrote:
>
>> Vitaly, perhaps you could resubmit this patch, and provide a
>> KVM_CAP_DISABLE_QUIRKS switch that would make apic_mmio_{read,write}
>> return -EOPNOTSUPP in this case?
> Just to make sure I understand,
>
> we introduce a KVM_QUIRK_LAPIC_DISABLED_MMIO bit and will be emulating
> MMIO hole in KVM till Qemu is able to deal with reads/writes passed to
> it correctly?
Yes, or forever, whichever comes first.
Paolo
prev parent reply other threads:[~2018-08-02 13:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-27 14:44 [PATCH RFC] x86/kvm/lapic: always disable MMIO interface in x2APIC mode Vitaly Kuznetsov
2018-07-27 16:48 ` Jim Mattson
2018-07-27 17:00 ` Paolo Bonzini
2018-07-30 9:14 ` Vitaly Kuznetsov
2018-08-02 11:54 ` Paolo Bonzini
2018-08-02 13:30 ` Vitaly Kuznetsov
2018-08-02 13:34 ` Paolo Bonzini [this message]
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