This fixes a `hang' on shutdown when the `Synchronise Cache' command
is sent to a disk. (It uses polled mode because it is called from inside
a shutdown hook).
recommend using official NetBSD CD-R image instead of rolling own CD-R
describe how to boot a kernel from an HFS partition
moved partitioning HDs to before copying files to it.
macppc/whatis:
heh, just noticed that it needed updating from NetBSD 1.4
pmap_growkernel() on large memory machines. at this point we've already
called uvm_page_init(), so we can no longer use uvm_page_physget().
but the flag we use to decide whether to use uvm_page_physget() vs.
uvm_pagealloc() is only set at the end of pmap_init(), so we use
uvm_page_physget() anyway. switch to using uvm.page_init_done to decide
how to allocate pages, since that's the real indicator of when we have to
change methods.
itself, and that got replaced with a call to memcpy. Ross deserves
most of the credit.
note that if you've seen bcopy elsewhere in the kernel, systm.h
defines it as a macro...
interrupt priority, to avoid allocating additional mbufs on
splsched(). Move some other misc bits out of splched()-guarded
section. This should make the code a bit more friendly wrt e.g.
clock interrupts. Sligh performance improvement was observed with
this change (like 1-2% on slow machine), even.
This also fixes ancient kern/2478 by Bill Sommerfeld.
Basically, bus_dmamap_sync() `PREREAD' needs to flush the cache
for the start and end of the region if it is not aligned to
a cacheline boundary, otherwise a subsequent POSTREAD can *purge*
valid data which was in the cacheline but *outside* the region
passed to bus_dmamap_sync().
Bus snooping doesn't always help here because osiop(4) calls
bus_dmamap_sync() with POSTREAD even if no data was actually
transferred! (And we can't rely on snooping on the 68060 models anyway).
