linux-kernel - Re: [PATCH v2 2/2] x86/sgx: Add sgx_nr_{all, free}

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Message-ID: <20210407161533.GJ25319@zn.tnic>
Date:   Wed, 7 Apr 2021 18:15:33 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Jarkko Sakkinen <jarkko@...nel.org>
Cc:     linux-sgx@...r.kernel.org,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] x86/sgx: Add sgx_nr_{all, free}_pages to the
 debugfs

On Wed, Apr 07, 2021 at 07:09:11PM +0300, Jarkko Sakkinen wrote:
> I left out "epc" because they are already prefixed with "sgx_".

Are there any other "page" types which are going to be figurating in
some pseudofs or is "sgx" == "epc" in this case?

> debugfs was my first shot, but for sure these could be sysfs.

Ok, let's keep it in debugfs for now, it can always be made an ABI later
and moved to sysfs. But pls document what those are and what they do and
that when in debugfs, there are no guarantees that these interfaces will
be there in the future.

> Should that be part of the first patch?

Yes pls.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette