# Re: about fb\_mmap

- From: Geert Uytterhoeven \<geert@linux-m68k.org\>
- Date: 2004-06-18 08:28:20 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2004/06/13453187
- Thread: https://ratatoskr.run/linux-fbdev/2004/06/13453183/t.md

```text
On Fri, 18 Jun 2004, xuhaoz wrote:
> 	I have a question about fb_mmap in uclinux2.4.

It (should) behave (almost) the same for uClinux and real Linux.

> 	what is the usage of fb_mmap(struct file *file, struct vm_area_struct
> *vma)
> 	my kernel is arm7 no mmu , does the fb_mmap function do some help for my
> framebuffer driver if i use fb_mmap function?

It allows to mmap() the frame buffer memory (and optionally the graphics chip
registers) to a user space application, e.g. an X server.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-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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