linux-kernel - Re: [PATCH 3/8] KVM: x86/mmu: Bury 32-bit PSE paging helpers in paging

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Message-ID: <CAJhGHyCMsc4g7rdW8td5vOA5iAZBu7+hewUJW8tUXX=_-UBVOA@mail.gmail.com>
Date:   Tue, 14 Jun 2022 10:20:17 +0800
From:   Lai Jiangshan <jiangshanlai@...il.com>
To:     Sean Christopherson <seanjc@...gle.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        "open list:KERNEL VIRTUAL MACHINE FOR MIPS (KVM/mips)" 
        <kvm@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/8] KVM: x86/mmu: Bury 32-bit PSE paging helpers in paging_tmpl.h

On Tue, Jun 14, 2022 at 6:59 AM Sean Christopherson <seanjc@...gle.com> wrote:
>
> Move a handful of one-off macros and helpers for 32-bit PSE paging into
> paging_tmpl.h and hide them behind "PTTYPE == 32".  Under no circumstance
> should anything but 32-bit shadow paging care about PSE paging.
>

Moving code from paging_tmp.h is on my to-do list.
I don't think the opposite direction is preferred.

And is_cpuid_PSE36() is also used in mmu.c, is it a good idea to move
it into paging_tmp.h?