linux-kernel - Re: [PATCH v3] kvm/x86: allocate the write-tracking metadata on-demand

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Message-ID: <ZelZv6/aXaViwkwd@yzhao56-desk.sh.intel.com>
Date: Thu, 7 Mar 2024 14:07:59 +0800
From: Yan Zhao <yan.y.zhao@...el.com>
To: Sean Christopherson <seanjc@...gle.com>
CC: Paolo Bonzini <pbonzini@...hat.com>, Andrei Vagin <avagin@...gle.com>,
	<linux-kernel@...r.kernel.org>, <x86@...nel.org>, <kvm@...r.kernel.org>,
	Zhenyu Wang <zhenyuw@...ux.intel.com>, Zhi Wang <zhi.a.wang@...el.com>,
	Yongwei Ma <yongwei.ma@...el.com>
Subject: Re: [PATCH v3] kvm/x86: allocate the write-tracking metadata
 on-demand

On Tue, Feb 27, 2024 at 01:28:18PM -0800, Sean Christopherson wrote:
> Added a few more KVM-GT folks.  FYI, this changes KVM to allocate metadata for
> write-tracking on-demand, i.e. when KVM-GT first registers with KVM.  I tested
> by hacking in usage of the external APIs, to register/unregister a node on every
> vCPU before/after vcpu_run(), so I am fairly confident that it's functionally
> correct.  But just in case you see issues in linux-next... :-)
I tested in my environment with KVMGT and found no issues :)