From: Paolo Bonzini <pbonzini@redhat.com>
To: Wanpeng Li <kernellwp@gmail.com>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: "Radim Krčmář" <rkrcmar@redhat.com>,
"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 14:56:15 +0200 [thread overview]
Message-ID: <293c4524-5869-2d3f-e0a3-92bde4430b81@redhat.com> (raw)
In-Reply-To: <1498652712-10283-4-git-send-email-wanpeng.li@hotmail.com>
On 28/06/2017 14:25, Wanpeng Li wrote:
> From: Wanpeng Li <wanpeng.li@hotmail.com>
>
> Add an nested_apf field to vcpu->arch.exception to identify an async page
> fault, and constructs the expected vm-exit information fields. Force a
> nested VM exit from nested_vmx_check_exception() if the injected #PF is
> async page fault. Extending the userspace interface KVM_GET_VCPU_EVENTS
> and KVM_SET_VCPU_EVENTS for live migration.
>
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Cc: Radim Krčmář <rkrcmar@redhat.com>
> Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
> ---
Radim, Wanpeng,
the patch is nice now but I'm still not 100% sure about the live
migration part. Why do we need to pass nested_apf to userspace, but not
nested_apf_token?
Paolo
next prev parent reply other threads:[~2017-06-28 12:56 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 [this message]
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
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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