linux-kernel - Re: [RFC PATCH v2 11/18] KVM: TDX: Fold tdx_mem_page_record_premap

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Message-ID: <fa7864ad360545c0673c8e07f458a447baf366d6.camel@intel.com>
Date: Tue, 2 Sep 2025 22:46:56 +0000
From: "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
To: "pbonzini@...hat.com" <pbonzini@...hat.com>, "seanjc@...gle.com"
	<seanjc@...gle.com>
CC: "Huang, Kai" <kai.huang@...el.com>, "ackerleytng@...gle.com"
	<ackerleytng@...gle.com>, "Annapurve, Vishal" <vannapurve@...gle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "Zhao, Yan Y"
	<yan.y.zhao@...el.com>, "Weiny, Ira" <ira.weiny@...el.com>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>, "michael.roth@....com"
	<michael.roth@....com>
Subject: Re: [RFC PATCH v2 11/18] KVM: TDX: Fold
 tdx_mem_page_record_premap_cnt() into its sole caller

On Thu, 2025-08-28 at 17:06 -0700, Sean Christopherson wrote:
> Fold tdx_mem_page_record_premap_cnt() into tdx_sept_set_private_spte() as
> providing a one-off helper for effectively three lines of code is at best a
> wash, and splitting the code makes the comment for smp_rmb()  _extremely_
> confusing as the comment talks about reading kvm->arch.pre_fault_allowed
> before kvm_tdx->state, but the immediately visible code does the exact
> opposite.
> 
> Opportunistically rewrite the comments to more explicitly explain who is
> checking what, as well as _why_ the ordering matters.
> 
> No functional change intended.
> 
> Signed-off-by: Sean Christopherson <seanjc@...gle.com>
> ---

Reviewed-by: Rick Edgecombe <rick.p.edgecombe@...el.com>