Re: Vramfs: filesystem driver to utilize extra RAM on VGA devices
From: H. Peter Anvin
Date: Mon Jan 26 2009 - 18:37:24 EST
Jonathan Campbell wrote:
So far I've tested it against 2.6.25.17 and 2.6.28 on both x86 and
x86_64 with reads, writes, directory creation, symlink creation, and
mmap() and it seems to work fine.
Just give it a range of memory on the bus, or the
domain:bus:device:function numbers of a VGA PCI device, and it will
mount the VGA video RAM and allow files to exist there.
As a special hack: you can also specify the size of the active
framebuffer console so that fbcon doesn't collide with this driver
(unless you want to see what your files look like splattered across your
screen, ha). The active VRAM area becomes a "sentinel" file named
"framebuffer".
What do you guys think?
How is this different from the MTD driver we already have?
-hpa
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