linux-kernel - Re: Vramfs: filesystem driver to utilize extra RAM on VGA devices

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Message-ID: <49828F4E.40208@zytor.com>
Date:	Thu, 29 Jan 2009 21:25:34 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Willy Tarreau <w@....eu>
CC:	Jonathan Campbell <jon@...dgrounds.com>,
	"Peter W. Morreale" <pmorreale@...ell.com>,
	devel@...verdev.osuosl.org,
	Linux Kernel List <linux-kernel@...r.kernel.org>
Subject: Re: Vramfs: filesystem driver to utilize extra RAM on VGA devices

Willy Tarreau wrote:
> 
> Also, MTD allows you to map *part* of the VRAM. On my laptop, I only
> map 56 MB out of the 64 MB of VRAM, which still allows me to use the
> VGA normally. And BTW, I map this VRAM as a fast swap memory.
> 
> In fact, I see little use to the VRAMFS for the average user. Still
> it might have been a nice coding exercice for Jonathan.
> 

Also, the idea of using the DMA engine on the video card rather than
just doing PIO references is an excellent one.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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