and sysv shared memory support for it. It implements a new
PG_UNMANAGED flag that has slightly different characteristics
from PG_FICTICIOUS.
A new sysctl, kern.ipc.shm_use_phys has been added to enable the
use of physically-backed sysv shared memory rather then swap-backed.
Physically backed shm segments are not tracked with PV entries,
allowing programs which use a large shm segment as a rendezvous
point to operate without eating an insane amount of KVM in the
PV entry management. Read: Oracle.
Peter's OBJT_PHYS object will also allow us to eventually implement
page-table sharing and/or 4MB physical page support for such segments.
We're half way there.
It may cause misterious chars appearse in the middle of the scrolled lines.
The bug trigger: enter
grep P_32 /usr/include/*.h
command and see misterious "db.\" filename.
Simple stuff
------------
Split _download up so that the MIB settings are in their own functions.
Made "tx completed but status is ..." a recoverable error
Cut down verbosity of "unloaded" messages
Moved ccs_free and com_runq from intr_ccs to ecf_done and runq_done
to avoid embarasing mistakes and waits.
Merged runq_add and runq_arr into one and called it runq_add
Made RAY_COM_DUMP a real debug called RAY_DCOM
Consistnet debugging around tsleeps.
Use bus_activate_resource for attr/cm mapping, and set the flags
correctly in the allocation routines (needs more hacks to
sys/pccard/pcic.c)
com_malloc is now seperated from the comq initialization. This was
done whilst trying to set automatic variables for the comqs.
Harder Stuff
------------
As part of the IFF_RUNNING fixes, remove the panic in runq if we are
not running.
Change, again, runq_add. This time we don't do any cleaning up
if there were errors. This is so that callers get the chance
to re-try (not that I ever see it being used).
In runq_add, only sleep when there is something to sleep on!
ioctl locking routines, stolen from awi.c but not used
Hardest Stuff
-------------
Dealing with serialing ioctls correctly means that we must QUEUE
changes to IFF_RUNNING and check it in the QUEUED commands, not
in the user commands. Whilst simple to state, it took a few
hours of head scratching to get it right. The realisation was that
I only have to guarantee that sub-commands from a single process
are serialised and "atomic", and that they check the status of the
interface flags when invoked and not when they are queued.
Another way of looking at it, is that the driver's state is stored
in the runq and the IFF_RUNNING flag. These must be changed together.
What this means practically, is that IFF_RUNNING is set after
we have started/joined/associated with a network. And it is
cleared by ray_stop via the runq so that unfinsished commands are
not distrupted.
I still have to fix up promisc, upp/repparams and mcast.
Oh yeah, stop is essentially a noop in that it only
changes IFF_RUNNING
- Get rid of a fiew uselessly `long' variables
and casts to `long'.
- Estimate the PCI clock for all chips, except
C1010 for now (we should do that for each PCI BUS)
- Refine a couple of C1010 errata work-arounds.
- For now, make sure AIP generation is disabled
for the C1010-66.
"options COMPAT_OLDPCI". This option already existed, but now also tidies
up the declarations in #include <pci/pci*.h>. It is amazing how much stuff
was using the old pre-FreeBSD 3.x names and going silently undetected.
for a seperate pc98 version of this stuff. Applying the same changes
from the i386 version yields identical files so remove these and use the
common ones.
and does not require that evil list of drivers in isa_compat.h.
It uses the same strategy that pci drivers use, namely a
COMPAT_ISA_DRIVER() macro that creates the glue on the fly.
Theoretically old-style isa drivers should be preloadable now.
all other modes not set ALKED flag and it means that CapsLock always turned
off for them.
Real bug example is X11 which never turn on CapsLock with Russian keyboard.
PR: 18651
Submitted by: "Mike E. Matsnev" <mike@po.cs.msu.su>
Only PCI and on-board ISA peripherials are supported at this time.
This support has been only lightly tested due to a lack of response to my
call for testers on the freebsd-alpha mailing list. It works quite well
on the one AS2100 on which it has been tested, but it may not work on
an AS2100A and should therefore be regarded as experimental.
- Go ahead and use 'lgdt' again instead of hand-assembling the instruction.
During testing this code worked fine. If for some reason a 32-bit offset
is needed, 'lgdtl' should be used instead of reverting to manual machine
code.
Tested by: peter
buzy, only search upwards for a free slot to use..
This broke unit numbering on ATA systems where PCI attached controllers
come before the mainboard ones...
Reviewed by: dfr
m_adj() and then check the resulting mbuf for misalignment, copying
backwards to align the mbuf if required.
This fixes a longstanding problem where an mbuf which would have been
properly aligned after an m_adj() was being misaligned and causing an
unaligned access trap in ip_input(). This bug only triggered when booting
diskless.
Reviewed by: dfr
more frequently than the core part of the sio driver, it might
be good to move the PnP IDs to sio_isapnp.h or something like
that.
PR: i386/18828
Submitted by: J.P. King <jpk28@cam.ac.uk>
This (I believe) is the cause of the XFree86 startup and/or mptable(8)
panics when programs were reading from /dev/mem at non-page-aligned
offsets. The offsets were being converted into random page flags in the
page tables. :-( (including PG_PS = 4MB page size)
Make the error recovery code a little more obvious.
Inform the user if UDMA66 mode couldn't be selected due to a
non ATA66 compliant 80pin cable.
Minor cosmetics.
with the new binutils. Now that we have a decent assembler, all the old
m4 macros are no longer needed. Instead, straight assembly can be used
since as(1) now understands 16-bit addressing, branches, etc. Also,
several bugs have been fixed in as(1), allowing boot0.s to be further
cleaned up.
CAPACITY operation. SCSI-3 mandates this to be 2048, but some older
drives like my old Plasmon CD-R report weird numbers between 2048 and
up to 2352 bytes depending on the mode of the last track etc. This in
turn confuses stuff like the slice code since it refuses to work with
devices that do not have a blocksize which is a multiple of 512 bytes.
Reviewed by: ken
libcam/Makefile: Add scsi_da.c to libcam for the new
scsi_format_unit() function.
camcontrol.8: Update the man page for the new format
functionality, and take out the examples section
describing how to do it with 'camcontrol cmd'.
camcontrol.c: New format functionality. Note that unlike the
rest of the camcontrol subcommands, this one is
interactive by default. Because of the potential
destructiveness of the format command, I thought
it necessary to get confirmation from the user
before spamming a disk. You can disable the
interactive behavior, and the status meter with
command line arguments.
scsi_da.c: Add the new scsi_format_unit() cdb building
function and use #ifdef _KERNEL to make this file
compile in both the kernel and userland. The
format unit function is currently only defined in
the non-kernel case, because nothing in the kernel
is using it. If that changes, it should be
un-ifdefed and compiled in both cases.
scsi_da.h: New function declaration, CDB structure and format
data structures.
Thanks to Nick Hibma for providing some valuable input on these changes.
have pv_entries. This is intended for very special circumstances,
eg: a certain database that has a 1GB shm segment mapped into 300
processes. That would consume 2GB of kvm just to hold the pv_entries
alone. This would not be used on systems unless the physical ram was
available, as it's not pageable.
This is a work-in-progress, but is a useful and functional checkpoint.
Matt has got some more fixes for it that will be committed soon.
Reviewed by: dillon
to various pmap_*() functions instead of looking up the physical address
and passing that. In many cases, the first thing the pmap code was doing
was going to a lot of trouble to get back the original vm_page_t, or
it's shadow pv_table entry.
Inspired by: John Dyson's 1998 patches.
Also:
Eliminate pv_table as a seperate thing and build it into a machine
dependent part of vm_page_t. This eliminates having a seperate set of
structions that shadow each other in a 1:1 fashion that we often went to
a lot of trouble to translate from one to the other. (see above)
This happens to save 4 bytes of physical memory for each page in the
system. (8 bytes on the Alpha).
Eliminate the use of the phys_avail[] array to determine if a page is
managed (ie: it has pv_entries etc). Store this information in a flag.
Things like device_pager set it because they create vm_page_t's on the
fly that do not have pv_entries. This makes it easier to "unmanage" a
page of physical memory (this will be taken advantage of in subsequent
commits).
Add a function to add a new page to the freelist. This could be used
for reclaiming the previously wasted pages left over from preloaded
loader(8) files.
Reviewed by: dillon
It's not clear what this does nor why they would do it, but it should
compile, now. This could be a case where fixing the code so that it
compiles merely masks more devious dysfunctional behaviour.
Note that __bsdi__s_/_i_/_os_/__ has moved this file to dev/ic/ and
has completely removed the non-compiling function from pdq_ifsubr.c and
has completely removed this function and placed it into netinet/if_ether.c
(if, in fact, it wasn't there the whole time). I was tempted to simply
remove this __bsdi__only__ function.
The function is arp_ifinit().
PR: kern/7903
