means that the dynamic linker gets mapped in at the top of available
user virtual memory (typically just below the stack), shared libraries
get mapped downwards from that point, and calls to mmap() that don't
specify a preferred address will get mapped in below those.
This means that the heap and the mmap()ed allocations will grow
towards each other, allowing one or the other to grow larger than
before. Previously, the heap was limited to MAXDSIZ by the placement
of the dynamic linker (and the process's rlimits) and the space
available to mmap was hobbled by this reservation.
This is currently only enabled via an *option* for the i386 platform
(though other platforms are expected to follow). Add "options
USE_TOPDOWN_VM" to your kernel config file, rerun config, and rebuild
your kernel to take advantage of this.
Note that the pmap_prefer() interface has not yet been modified to
play nicely with this, so those platforms require a bit more work
(most notably the sparc) before they can use this new memory
arrangement.
This change also introduces a VM_DEFAULT_ADDRESS() macro that picks
the appropriate default address based on the size of the allocation or
the size of the process's text segment accordingly. Several drivers
and the SYSV SHM address assignment were changed to use this instead
of each one picking their own "default".
- use size_t where appropriate
- use err/warn instead of printf, and don't hide the error messages from ioctl.
- keep units in sync (someone added integer in the header file and forgot
to update envsys.c)
as bus_dmamem_alloc_range() is missing we use the ISA dma tag on i386.
The iorange for the dma registers now gets allocated near the used range.
Chances are high, that this range is valid on this PCI bus.
This one is really ugly :-)
Approved by: Lennart Augustsson <augustss@netbsd.org>
- filenames in obsolete sets start with "./" not "/" (i changed that a
while ago, and forgot to update this)
- only call target_prefix() once, not for each filename parsed...
- look for obsolete lists in /etc/obsolete/%s instead of /dist/%s_obsolete
* Improve message display in find_file_in_dirlist()
* do_obsolete(): instead of running distrib/sets/makeobsolete to
temporarily generate the obsolete sets lists, look for them in
${SRC_DIR}/etc/obsolete/* or ${DEST_DIR}/etc/obsolete/*.
The obsolete check now works for "extracted etc.tgz" as the source dir.
etc/Makefile (install-etc-files), distrib/sets/lists/*
* Install obsolete set lists into /etc/obsolete/
* Tweak how pwd_mkdb files are added to METALOG
distrib/sets/makeobsolete
* Don't bother with "_obsolete" suffix on generated file names.
via timing by performing a MAC computation even if incorrect
block cipher padding has been found. This is a countermeasure
against active attacks where the attacker has to distinguish
between bad padding and a MAC verification error. (CAN-2003-0078)
autonegotiation to take place if IFM_AUTO is selected in mii_media_set.
Make the gem driver use it. (XXX hme probably should use it but I can't
test that).