linux-kernel - Re: [PATCH v6 2/6] x86/tdx: Support vmalloc() for tdx_enc_status

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Message-ID: <05bbef94-686e-e3cc-40d3-95acfbf45a5d@intel.com>
Date:   Thu, 25 May 2023 12:18:34 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     "Kirill A. Shutemov" <kirill@...temov.name>
Cc:     kirill.shutemov@...ux.intel.com, Dexuan Cui <decui@...rosoft.com>,
        ak@...ux.intel.com, arnd@...db.de, bp@...en8.de,
        brijesh.singh@....com, dan.j.williams@...el.com,
        dave.hansen@...ux.intel.com, haiyangz@...rosoft.com, hpa@...or.com,
        jane.chu@...cle.com, kys@...rosoft.com, linux-arch@...r.kernel.org,
        linux-hyperv@...r.kernel.org, luto@...nel.org, mingo@...hat.com,
        peterz@...radead.org, rostedt@...dmis.org,
        sathyanarayanan.kuppuswamy@...ux.intel.com, seanjc@...gle.com,
        tglx@...utronix.de, tony.luck@...el.com, wei.liu@...nel.org,
        x86@...nel.org, mikelley@...rosoft.com,
        linux-kernel@...r.kernel.org, Tianyu.Lan@...rosoft.com
Subject: Re: [PATCH v6 2/6] x86/tdx: Support vmalloc() for
 tdx_enc_status_changed()

On 5/25/23 12:08, Kirill A. Shutemov wrote:
> Shared->Private conversion is rare. I only see one call total during the
> boot in my setup. Worth fixing anyway.
...
> Any comments?

So the rules are:

 * Shared mapping of a private page: BAD
 * Private mapping of a shared page: OK

?

The patch seems OK, other than having zero comments in it.