DragonFly kernel List (threaded) for 2006-02
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Re: vmapbuf confusion
On 2/16/06, Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx> wrote:
> Device drivers need a stable KVA-mapped memory. It only seems
> to work with the pointer to user memory because the user memory
> happened to be faulted in for the duration of the I/O and
> because the I/O happened to occur in the context of the user process.
> This isn't always going to be the case with a device write.
ok, that makes sense. thanks!
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