linux-kernel - Re: [PATCH] vt_buffer: drop console buffer copying optimisations

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Message-ID: <CAMuHMdX7rUevAZFgi_yZe1N6v5DkczUo87juJ40gB7r3UfjKDQ@mail.gmail.com>
Date:	Mon, 9 Feb 2015 11:49:48 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Daniel Stone <daniel@...ishbar.org>
Cc:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Tomi Valkeinen <tomi.valkeinen@...com>, dri-devel@...ts.sf.net,
	Dave Airlie <airlied@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] vt_buffer: drop console buffer copying optimisations

On Mon, Feb 9, 2015 at 11:35 AM, Daniel Stone <daniel@...ishbar.org> wrote:
> On 5 February 2015 at 11:35, One Thousand Gnomes
> <gnomes@...rguk.ukuu.org.uk> wrote:
>>> If I'm not mistaken, that would be as simple as adding
>>>
>>>     #define VT_BUF_HAVE_RW.
>>>     #define scr_writew(val, addr) (*(addr) = (val))
>>>     #define scr_readw(addr) (*(addr))
>>>
>>> to arch/x86/include/asm/vga.h.
>>
>> and stick an
>>
>> #if defined (CONFIG_SUPPORT_SHITE_VGA_ADAPTERS)
>>
>> #endif
>>
>> around that and its sorted as an option everyone can leave off but the
>> afflicted.
>
> Well, given all the distros will enable that, might as well be #if
> !defined(CONFIG_BREAK_SOME_HARDWARE_BUT_VGA_SCROLLING_WILL_BE_IMMEASURABLY_FASTER).

All distros on 1 out of 29 architectures?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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