linux-kernel - Re: [PATCHv3 02/32] x86/coco: Add API to handle encryption mask

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Message-ID: <YhQYgBYOBtdPD65X@zn.tnic>
Date:   Mon, 21 Feb 2022 23:56:00 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:     Dave Hansen <dave.hansen@...el.com>, tglx@...utronix.de,
        mingo@...hat.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: [PATCHv3 02/32] x86/coco: Add API to handle encryption mask

On Tue, Feb 22, 2022 at 01:21:49AM +0300, Kirill A. Shutemov wrote:
> Well, it actually going to be
> 
>  	cpa.mask_set = enc ? cc_mkenc(__pgprot(0)) : cc_mkdec(__pgprot(0));
>  	cpa.mask_clr = enc ? cc_mkdec(__pgprot(0)) : cc_mkenc(__pgprot(0));
> 
> as '0' is not a valid pgprot_t.
> 
> Still wonna go this path?

Why "still"? What's wrong with that?

-- 
Regards/Gruss,
    Boris.

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