I.e.
alias sound sb
options sb io=0x220 irq=5 dma=1 dma16=5
options sound dmabuf=1
doesn't work because of the alias of sound = sb. So right now I've got to
insmod sound dmabuf=1; modprobe sb on the affected computers.
On Sun, 21 Feb 1999, Alan Cox wrote:
> > > Probably the 'reserve Xmb below 16mb for dma memory' is the best solution.
> > > eg in lilo.conf something like
> > > append = "dmaram=2m"
> > >
> > Exactly my point...
> > Now who wants to implement this? as I know nothing about Linux's MM ;)
>
> Reserving low memory space is fairly easy. You'd probably want a different
> function to kmalloc managing it (kmalloc is called an awful lot), and
> your dma memory allocator could call kmalloc itself as a last resort.
>
> > (of course the other solution would be modifying the MM to do some more
> > aggressive try_to_get_dmable_memory type thingies)
>
> That may work. Someone was playing with it
>
> > And this raises a question about Linux's MM: How hard is it for the kernel
> > to relocate things in physical memory?
>
> Its definitely not 2.2 stuff, its a generally hard problem.
>
> Alan
>
>
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