linux-kernel - Re: [PATCH v2 2/7] x86/boot: Introduce helpers for serial I/O

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Message-ID: <20190328143447.GN22720@zn.tnic>
Date:   Thu, 28 Mar 2019 15:34:47 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/7] x86/boot: Introduce helpers for serial I/O

On Thu, Mar 28, 2019 at 04:20:01PM +0200, Andy Shevchenko wrote:
> By name and by what it's handling (only byte accesses to I/O or MMIO).

Your series does only byte accesses so you can use byte variant.

> My point is, that doing branch(es) on each I/O call is not good as simple
> calling the proper (pre-defined) I/O accessor.

What branches?

You do a branch and *then* you do an IO call.

What does "not good" even mean?

-- 
Regards/Gruss,
    Boris.

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