Now, on the Amiga, we copy a small piece of code to chip memory and enable the
MMU from here.
On the DraCo, we setup %itt0 so that we shadow physical memory without
touching the page tables and very temporarily. The DraCo's memory layout
guarantees that there is no overlap in this case between physical and
virtual addresses.
This fixes a bug where Amiga's with physical memory at 0x200000 wouldn't boot
kernels >2M in size, and possibly other corner cases.
Joint work with Ilpo Ruotsalainen and Ignatios Souvatzis.
and the back end Bluetooth device driver. The device driver now
allocates a suitable buffer on behalf of the bthci driver, and bthci
fills the buffer before despatch.
This saves an ugly temporary allocation (in bthci) and memory copy (in
the USB driver) per write, and also works better with the
sockets-based interface I'm experimenting with.
cpu's who have done so. implement pmap_deactivate() for MULTIPROCESSOR and
call it from cpu_switch() when we are about to switch proces and when we
enter idle().
with this change, i see significantly reduced tlb IPI traffic and fork/exec
bound processes -- such as "configure" -- run significantly faster, upto
15%. i also obvserved a small (0-2%) benefit to CPU bound tasks as well.
PLT entries are 12 bytes. Add a #define for that and replace the
explicit values with the PLT_ENTRY_SIZE. This bug can cause random
SIGILL signals to happen.
A preserved package may not be deleted by pkg_delete(1) (unless the -f
option is given), and the preserved capability will be carried into
any binary package. pkg_add(1) will also keep the preserved capability
if it was present in the binary package.
The "preserve" capability can be given to a package by using the
PKG_PRESERVE definition in a package Makefile in pkgsrc.
Ride on the recently-bumped lib/version.h for new functionality.
