linux-kernel - Re: [PATCH v3 3/3] drm/tiny: add driver for Apple Touch Bars in x86 Macs

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Message-ID: <Z7xbM_8fV4MT_TJ0@smile.fi.intel.com>
Date: Mon, 24 Feb 2025 13:42:43 +0200
From: "andriy.shevchenko@...ux.intel.com" <andriy.shevchenko@...ux.intel.com>
To: Aditya Garg <gargaditya08@...e.com>
Cc: Thomas Zimmermann <tzimmermann@...e.de>,
	"pmladek@...e.com" <pmladek@...e.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	"linux@...musvillemoes.dk" <linux@...musvillemoes.dk>,
	"senozhatsky@...omium.org" <senozhatsky@...omium.org>,
	Jonathan Corbet <corbet@....net>,
	"maarten.lankhorst@...ux.intel.com" <maarten.lankhorst@...ux.intel.com>,
	"mripard@...nel.org" <mripard@...nel.org>,
	"airlied@...il.com" <airlied@...il.com>,
	"simona@...ll.ch" <simona@...ll.ch>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"apw@...onical.com" <apw@...onical.com>,
	"joe@...ches.com" <joe@...ches.com>,
	"dwaipayanray1@...il.com" <dwaipayanray1@...il.com>,
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	Kerem Karabay <kekrby@...il.com>, Aun-Ali Zaidi <admin@...eit.net>,
	Orlando Chamberlain <orlandoch.dev@...il.com>,
	Atharva Tiwari <evepolonium@...il.com>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
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	Hector Martin <marcan@...can.st>,
	"linux@...linux.org.uk" <linux@...linux.org.uk>,
	Asahi Linux Mailing List <asahi@...ts.linux.dev>,
	Sven Peter <sven@...npeter.dev>, Janne Grunau <j@...nau.net>
Subject: Re: [PATCH v3 3/3] drm/tiny: add driver for Apple Touch Bars in x86
 Macs

On Mon, Feb 24, 2025 at 11:20:12AM +0000, Aditya Garg wrote:
> 
> > 
> > It would be nice to see the difference in the code generation for the all
> > __packed vs. only those that require it.
> > 
> >> At least it's clear then
> >> what happens. And if your hardware requires this, you can't do much anyway.
> > 
> > One aspect (member level alignment) is clear but the other is not
> > (object level alignment). I dunno if it makes sense to be pedantic about this,
> > but would like to see the binary outcome asked for.
> 
> Hex dump of the compiled binary:

Oh, sorry I wasn't clear. We have a script called bloat-o-meter for these
purposes. Please, run it with old and new binaries as parameters and share the
output.

-- 
With Best Regards,
Andy Shevchenko