linux-kernel - Re: [PATCH v3 0/6] KVM: nVMX: Enable nested apicv support.

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Message-ID: <CACzj_yUusP+=+Etz18vqGjdtKV21MDe_cGbqer30uu4JBBNKNw@mail.gmail.com>
Date:	Wed, 28 Jan 2015 14:37:28 +0800
From:	Wincy Van <fanwenyi0529@...il.com>
To:	Paolo Bonzini <pbonzini@...hat.com>
Cc:	"gleb@...nel.org" <gleb@...nel.org>,
	"Zhang, Yang Z" <yang.z.zhang@...el.com>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Wanpeng Li <wanpeng.li@...ux.intel.com>,
	Jan Kiszka <jan.kiszka@....de>
Subject: Re: [PATCH v3 0/6] KVM: nVMX: Enable nested apicv support.

On Wed, Jan 28, 2015 at 6:06 AM, Paolo Bonzini <pbonzini@...hat.com> wrote:
>
>
> On 24/01/2015 11:18, Wincy Van wrote:
>> v2 ---> v3:
>>   1. Add a new field in nested_vmx to avoid the spin lock in v2.
>>   2. Drop send eoi to L1 when doing nested interrupt delivery.
>>   3. Use hardware MSR bitmap to enable nested virtualize x2apic
>>      mode.
>
> I think the patches are mostly okay.  I made a few comments.
>

Thank you, Paolo and Yang. I can't accomplish this without your help.

> One of the things to do on top could be to avoid rebuilding the whole
> vmcs02 on every entry.  Recomputing the MSR bitmap on every vmentry is
> not particularly nice, for example.  It is not necessary unless the
> execution controls have changed.

Indeed, I was planned to do that optimization after this patch set.


Thanks,
Wincy

>
> Paolo
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