Hi Scott !
There's this pearl in cpm_common.c :
void __init udbg_init_cpm(void)
{
if (cpm_udbg_txdesc) {
#ifdef CONFIG_CPM2
setbat(1, 0xf0000000, 0xf0000000, 1024*1024, PAGE_KERNEL_NCG);
#endif
udbg_putc = udbg_putc_cpm;
}
}
Now, last I looked, 0xf0000000 (virtual) lands about right in the middle
of the vmalloc space... so unless there's code somewhere that I missed
that reserves that region of virtual space for use by that crap above,
I think somebody is in trouble :-)
Additionally, that's the last user of setbat that I can find outside
of the linear mapping setup proper, so scott, once you've fixed that
I'll happily make setbat static once for all. We -can- still provide
a facility for using BATs for early ioremap's but that should be done
properly, not by whacking setbat with random hard wired virtual
addresses.
Cheers,
Ben.
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