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From: Johannes Thumshirn <jthumshirn@suse.de>
To: Max Staudt <mstaudt@suse.de>,
	b.zolnierkie@samsung.com, linux-fbdev@vger.kernel.org,
	michal@markovi.net, sndirsch@suse.com, oneukum@suse.com,
	tiwai@suse.com, dri-devel@lists.freedesktop.org,
	linux-kernel@vger.kernel.org, bernhard.rosenkranzer@linaro.org,
	philm@manjaro.org
Subject: Re: [RFC PATCH v2 00/13] Kernel based bootsplash
Date: Wed, 20 Dec 2017 12:08:09 +0100
Message-ID: <20171220110809.u7bf6miyiorio6bz@linux-x5ow.site> (raw)
In-Reply-To: <20171219161630.GI26573@phenom.ffwll.local>

On Tue, Dec 19, 2017 at 05:16:30PM +0100, Daniel Vetter wrote:
> Ok I've realized that my assumptions about why you need this aren't
> holding up.
> 
> So from reading these patches it sounded like you want an in-kernel boot
> splash because that would be on the display faster than a userspace one
> like plymouth. That's the only reasons I can see for this (if there's
> another good justification, please bring it up).
> 
> I only know of very embedded setups (tv top boxes, in vehicle
> entertainment) where that kind of "time to first image" really matters,
> and those systems:
> - have a real hw kms driver
> - don't have fbcon or fbdev emulation enabled (except for some closed
>   source stacks that are a bit slow to adapt to the new world, and we
>   don't care about those in gfx).
> 
> But from discussions it sounds like you very much want to use this on
> servers, which makes 0 sense to me. On a server something like plymouth
> should do a perfectly reasonable job.

For _one_ reason we'd like to see this is (I was one of the requesters of this
implementation), plymouth in it's infinite wisdom also grabs the serial (IPMI)
console and escape characters in a screen log are (you can think of the rest
of this sentence yourself I think).

Also plymouth grabs the escape character of HPE iLOs, which is a serious
no-go.  

But for several other reasons we can't disable $BOOTSPLASH_IMPLEMENTATION as
we're shipping a general purpose distro and don't know on what hardware it
will be installed.

This is only my peronal view on this situation.

Byte,
	Johannes
-- 
Johannes Thumshirn                                          Storage
jthumshirn@suse.de                                +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Felix Imendörffer, Jane Smithard, Graham Norton
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  parent reply index

Thread overview: 68+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-12-13 19:47 Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 01/13] bootsplash: Initial implementation showing black screen Max Staudt
2017-12-13 23:55   ` Randy Dunlap
2017-12-14 15:37     ` Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 02/13] bootsplash: Add file reading and picture rendering Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 03/13] bootsplash: Flush framebuffer after drawing Max Staudt
2017-12-13 21:35   ` Daniel Vetter
2017-12-14 15:36     ` Max Staudt
2017-12-19 12:23       ` Daniel Vetter
2017-12-19 13:34         ` Max Staudt
2017-12-19 13:57           ` Daniel Vetter
2017-12-19 14:07             ` Oliver Neukum
2017-12-31 12:53               ` Alan Cox
2018-01-03 18:04                 ` Max Staudt
2017-12-19 15:41             ` Max Staudt
2017-12-19 16:02               ` Daniel Vetter
2017-12-19 16:23                 ` Max Staudt
2017-12-20  9:45                   ` Daniel Vetter
2017-12-19 16:09               ` Daniel Vetter
2017-12-19 16:26                 ` Max Staudt
2017-12-19 21:01               ` Ray Strode
2017-12-20 13:14                 ` Max Staudt
2017-12-20 15:35                   ` Ray Strode
2017-12-20 16:52                     ` Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 04/13] bootsplash: Add corner positioning Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 05/13] bootsplash: Add animation support Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 06/13] vt: Redraw bootsplash fully on console_unblank Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 07/13] vt: Add keyboard hook to disable bootsplash Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 08/13] sysrq: Disable bootsplash on SAK Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 09/13] fbcon: Disable bootsplash on oops Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 10/13] Documentation: Add bootsplash main documentation Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 11/13] bootsplash: sysfs entries to load and unload files Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 12/13] tools/bootsplash: Add a basic splash file creation tool Max Staudt
2017-12-13 19:47 ` [RFC PATCH v2 13/13] tools/bootsplash: Add script and data to create sample file Max Staudt
2017-12-13 19:52 ` [RFC PATCH v2 00/13] Kernel based bootsplash Max Staudt
2017-12-19 16:16 ` Daniel Vetter
2017-12-19 17:04   ` Max Staudt
2017-12-19 17:26     ` Daniel Vetter
2017-12-19 18:40       ` Max Staudt
2017-12-20  9:43         ` Daniel Vetter
2017-12-20 10:06           ` Neil Armstrong
2017-12-20 10:14             ` Daniel Vetter
2017-12-20 14:55               ` Max Staudt
2017-12-20 15:11                 ` Daniel Vetter
2017-12-20 15:19                   ` Daniel Vetter
2017-12-20 15:22                     ` Daniel Vetter
2017-12-20 16:23                     ` Max Staudt
2017-12-20 16:15                   ` Max Staudt
2017-12-31 12:44                   ` Alan Cox
2018-01-03 18:00                     ` Max Staudt
2017-12-20 14:16             ` Max Staudt
2017-12-20 14:10           ` Max Staudt
2017-12-31 12:35         ` Alan Cox
2018-01-03 17:56           ` Max Staudt
2017-12-19 20:30     ` Ray Strode
2017-12-20 13:03       ` Max Staudt
2017-12-20 15:21         ` Ray Strode
2017-12-20 16:44           ` Max Staudt
2017-12-21 14:51             ` Ray Strode
2017-12-21 16:32               ` Max Staudt
2017-12-20 11:08   ` Johannes Thumshirn [this message]
2017-12-20 11:22     ` Daniel Stone
2017-12-20 12:48       ` Johannes Thumshirn
2017-12-29 17:13   ` Jani Nikula
2018-01-03 17:38     ` Max Staudt
2017-12-21  9:48 ` Daniel Vetter
2017-12-21 16:52   ` Max Staudt
2017-12-21 15:00 ` Philip Müller

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