Re: vremap and memcpy_to_fs in 2.2.x?
Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 8 Apr 1999 02:07:30 +0100 (BST)
> That's not what the first case in this snippet of bttv.c does. Looks to
> me like it will grab frames directly into whatever is mapped in user
> space, if user space requests it. Isn't this used to grab directly to a
> mapped framebuffer?
The frame buffer is driven directly by a physical address. The alternative
addresses come from the mmap buffer which is a kernel object mapped user
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