linux-kernel - Re: vfb module

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Date:	Fri, 06 Apr 2007 02:42:50 +0800
From:	"Antonino A. Daplas" <adaplas@...il.com>
To:	Michael Trimarchi <trimarchi@...dalf.sssup.it>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: vfb module

On Thu, 2007-04-05 at 10:30 +0200, Michael Trimarchi wrote:
> Hi,
> I changed a little bit the vfb module to be used as a frame buffer in 
> memory. I would like to use the mmap over the virtual framebuffer. I 
> added a few line:
> I allocated the buffer using
> videomemory=(void *)__get_free_pages(GFP_KERNEL, 
> get_order(PAGE_ALIGN(videomemorysize)));
> 
> and fixed the framebuffer info structure:
> 
> vfb_fix.smem_start = virt_to_phys(videomemory);
> vfb_fix.smem_len = videomemorysize;
> 
> What is the virtual frame buffer meant for?

For testing, and some uses it as a skeleton for another driver.

Tony


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