linux-kernel - Re: [PATCHv2 22/29] x86/tdx: Make pages shared in ioremap()

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Date:   Wed, 02 Feb 2022 20:47:37 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:     mingo@...hat.com, bp@...en8.de, dave.hansen@...el.com,
        luto@...nel.org, peterz@...radead.org,
        sathyanarayanan.kuppuswamy@...ux.intel.com, aarcange@...hat.com,
        ak@...ux.intel.com, dan.j.williams@...el.com, david@...hat.com,
        hpa@...or.com, jgross@...e.com, jmattson@...gle.com,
        joro@...tes.org, jpoimboe@...hat.com, knsathya@...nel.org,
        pbonzini@...hat.com, sdeep@...are.com, seanjc@...gle.com,
        tony.luck@...el.com, vkuznets@...hat.com, wanpengli@...cent.com,
        x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCHv2 22/29] x86/tdx: Make pages shared in ioremap()

On Wed, Feb 02 2022 at 22:27, Kirill A. Shutemov wrote:
> On Wed, Feb 02, 2022 at 01:25:28AM +0100, Thomas Gleixner wrote:
>> On Mon, Jan 24 2022 at 18:02, Kirill A. Shutemov wrote:
>> I cannot find any of the above mentioned subsystems in this grep
>> output. Neither does this patch add any users which require those
>> exports.
>
> Try to grep pgprot_decrypted().

Bah.

> I guess we can get away not exporting pgprot_encrypted(), but this
> asymmetry bothers me :)

Well, no. We export only stuff which is needed. Exporting just because
is a NONO.

Thanks,

        tglx