From: Paolo Bonzini <pbonzini@redhat.com>
To: Wanpeng Li <kernellwp@gmail.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
kvm <kvm@vger.kernel.org>, "Wanpeng Li" <wanpeng.li@hotmail.com>
Subject: Re: [PATCH v6 3/4] KVM: async_pf: Force a nested vmexit if the injected #PF is async_pf
Date: Wed, 28 Jun 2017 16:20:35 +0200 [thread overview]
Message-ID: <92bdfd0d-f208-eeea-4d03-0dfddd467338@redhat.com> (raw)
In-Reply-To: <CANRm+Cx8wQCcsaMgUUMxtBvW5OTzE6cq2t4TcOr-9xXXHgsMow@mail.gmail.com>
On 28/06/2017 16:17, Wanpeng Li wrote:
>> If for now we can leave out the GET/SET_VCPU_EVENTS changes, that would
>> be best. nested_apf and nested_apf_token should be migrated together
>> with the rest of the nested virt state.
> Radim explains why we at least needs nested_apf here:
>
>> nested_apf is not #PF: if we didn't pass nested_apf, then the exception would be injected as #PF to L2 after migration.
Yes, but migration of a L1 hypervisor is broken anyway.
> Do you mean we can ignore it here and depends on Jim's patches to
> completely handle it?
Ignore it here, remember it when someone picks up Jim's patches, and
also serialize nested_apf_token.
Paolo
next prev parent reply other threads:[~2017-06-28 14:20 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-28 12:25 [PATCH v6 0/4] KVM: async_pf: Fix async pf exception injection Wanpeng Li
2017-06-28 12:25 ` [PATCH v6 1/4] KVM: x86: Simple kvm_x86_ops->queue_exception parameter Wanpeng Li
2017-06-28 12:25 ` [PATCH v6 2/4] KVM: async_pf: Add L1 guest async_pf #PF vmexit handler Wanpeng Li
2017-06-28 12:25 ` [PATCH v6 3/4] KVM: async_pf: Force a nested vmexit if the injected #PF is async_pf Wanpeng Li
2017-06-28 12:56 ` Paolo Bonzini
2017-06-28 13:38 ` Radim Krčmář
2017-06-28 13:48 ` Paolo Bonzini
2017-06-28 14:09 ` Wanpeng Li
2017-06-28 14:11 ` Paolo Bonzini
2017-06-28 14:17 ` Wanpeng Li
2017-06-28 14:20 ` Paolo Bonzini [this message]
2017-06-28 14:23 ` Wanpeng Li
2017-06-28 12:25 ` [PATCH v6 4/4] KVM: async_pf: Let host know whether the guest support delivery async_pf as #PF vmexit Wanpeng Li
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