This avoids the unit number from going up indefinitely when
diconnecting and connecting 2 devices alternately.
Noticed by: nsayer (quite a while ago)
And stop calling DEVICE_NOMATCH at probe repeatedly. This stops the
message on the PCI VGA board from being printed when loading a PCI driver.
platform we're running on so we know how many bits to reserve at the top
end for the 'hose' value. It turns out that there's *just* enough room
to support all possible hoses on TurboLaser.
Reviewed by: gallatin@freebsd.org, dfr@free3bsd.org
This makes it possible to handle the done queue even when the end of tail
TD has ended up on the done queue as well (the xfer in this case is NULL
but the next field is valid, so we simply skip that element.
Make sure we mark all the handled transfers as handled.
Stop using powerhooks. They are a NetBSD-ism.
the unwary if the code were called in slightly different ways.
1) In ufs_bmaparray() the code for calculating 'runb' will stop one block
short of the first entry in an indirect block. i.e. if an indirect block
contains N block numbers b[0]..b[N-1] then the code will never check if
b[0] and b[1] are sequential. For reference, compare with the equivalent
code that deals with direct blocks.
2) In ufs_lookup() there is an off-by-one error in the test that checks
if dp->i_diroff is outside the range of the the current directory size.
This is completely harmless, since the following while-loop condition
'dp->i_offset < endsearch' is never met, so the code immediately
does a second pass starting at dp->i_offset = 0.
3) Again in ufs_lookup(), the condition in a sanity check is wrong
for directories that are longer than one block. This bug means that
the sanity check is only effective for small directories.
Submitted by: Ian Dowse <iedowse@maths.tcd.ie>
necessary. Pass an absolute block number too, instead of receiving a
relative one in realstrategy(), as bcache_strategy() requires this.
The fix is sligthly different from the one in the PR.
PR: 17098
Submitted by: John Hood <jhood@sitaranetworks.com>
was the last unit number received. If it changes, it flushes the cache.
Add bcache_flash().
The actual fix is sligthly different from the one in the PR.
PR: 17098
Submitted by: John Hood <jhood@sitaranetworks.com>
flushed if the unit changes. Compute the absolute offset before
bcache_strategy() instead of after.
The actual fix is sligthly different for the one in the PR.
PR: 17098
Submitted by: John Hood <jhood@sitaranetworks.com>
to recycle full fsids after only 16 mount/unmount's. This is probably
too often for exported fsids. Now we recycle the full fsids only
after 2^16 mount/ umount's and only ensure uniqueness in the lower 16
bits if there have been <= 256 calls to vfs_getnewfsid() since the
system started.
Previously, it was being called whether it was needed or not and the
ASU flag was being set (as a side affect of calling 'suser()') in
cases where superuser privileges were not actually needed. This was
all pointed out to me by Bruce Evans.
Reviewed by: bde
- Make iface nodes removable on shutdown since FreeBSD now supports
removable interfaces
- Simplify supporting new protocols using family_enqueue(); add a
few new ones including IPv6
- Add support for configurable interface mode using new
NGM_IFACE_POINT2POINT and NGM_IFACE_BROADCAST control messages
- Remove NGM_IFACE_GET_IFADDRS control message; it just duplicates
the functionality of SIOCGIFCONF
pte's from zero. The TLB is supposed to be invalidated when pte's are
changed _to_ zero, but this doesn't occur in all cases for global pages
(PG_G stops invltlb() from working, and invltlb_1pg() is not used
enough).
PR: 14141, 16568
Submitted by: dillon
rest of the code in (so changing media actually works.)
Add a few more register definitions for use with this and other new code.
Print a few details in the probe message; this should be useful in
bug reports and such but should not add to the clutter.
* i needed it anyway
* remove startccs and startcmd - done
* as those were used for the NetBSD start timeout
* multicast - done but UNTESTED
* I don't have the ability/facilty to test this
* rxlevel - done
* stats reported via raycontrol
* getparams ioctl - done
* reported via raycontrol
* start_join_done needs a restart in download_done - done
* now use netbsd style start up
removed spare timerh
implemented start_assoc in ray_ccs_done
bit more knfing
number was packed very wastefully, giving perfect non-uniqeness in
the lower 16 bits of fsids for filesystems with the same vfs type.
This made linux_stat() return perfectly non-unique (broken) 16-bit
st_dev's for nfs mount points, and effectively reduced mntid_base to
8 bits so that the vfs_getnewfsid() looped endlessly when there are
already 256 mounted filesystems with the required vfs type.
Approved by: jkh
print an error message which say, "include netinet/ip6.h".
This is postponed to apply to avoid tcpdump compile error.
Now apply this because tcpdump has been already fixed.
Approved by: jkh
Obtained from: KAME project
we get the com address. If so, we go ahead and return. Bruce thinks
there's a bug in the pccard layer that it terminates devices with
extreme prejustice rather than letting them deside for themselves when
to terminate (and he's likely right). This fix doesn't change that,
but instead works around it by checking for NULL pointers at more
places than before.
The detach routine still calls functions at interrupt level that
aren't reentrant. In theory this could cause a problem, but none
showed up in practice. Future versions should correct this problem,
likely by making the detach process a thread/process at the pccard
level. NEWCARD will do this, and the current pccard layer should
likely be modified to that as well, should it live long enough.
A few style nits of the same form that were in my original patch sent
off to bde were also fixed as part of this process. Mostly use of
!ptr and return ENOPARENS.
This should prevent a crash on suspend with an active ppp link as
well, but that wasn't tested.
Reviewed by: bde
Approved by: jkh
icmp6 error statistics based on sending interface.
This also prevent kernel panic when rcvif is not initialized after M_PKTHDR().
(The initialization issue also need to be fixed in the future.)
Approved by: jkh
Submitted by: k-sugyou@kame.net
requires current and desired network parameters, so I have created a network parameter structure and used two on them in the softc. This gives a bit of room of expansion. Re-wrote the update check in _net to work with this.
Tidyed up softc due to above.
Removed startccs and startcmd as they were only used by NetBSDs startup timeout.
Now most big problem of IPv6 is getting IPv6 address
assignment.
6to4 solve the problem. 6to4 addr is defined like below,
2002: 4byte v4 addr : 2byte SLA ID : 8byte interface ID
The most important point of the address format is that an IPv4 addr
is embeded in it. So any user who has IPv4 addr can get IPv6 address
block with 2byte subnet space. Also, the IPv4 addr is used for
semi-automatic IPv6 over IPv4 tunneling.
With 6to4, getting IPv6 addr become dramatically easy.
The attached patch enable 6to4 extension, and confirmed to work,
between "Richard Seaman, Jr." <dick@tar.com> and me.
Approved by: jkh
Reviewed by: itojun
keyboard port and interrupt is enabled and the driver is attached even
when the keyboard itself is not present when the system is booting.
(This has been the behavior through out 2.X and 3.X, but is somehow
broken in 4.0.)
# I certainly don't recommend people to `hot-plug' the AT keyboard,
# because the interface isn't designed for hot-plugging and such act
# will often break the keyboard controller. But, so many people want to
# do that anyway...
Approved by: jkh
ARP packets. This can incorrectly reject complete frames since the frame
could be stored in more than one mbuf.
The following patches fix the length comparisson, and add several
diagnostic log messages to the interrupt handler for out-of-the-norm ARP
packets. This should make ARP problems easier to detect, diagnose and
fix.
Submitted by: C. Stephen Gunn <csg@waterspout.com>
Approved by: jkh
Reviewed by: rwatson
VM_PROT_EXECUTE must be added to prot before calling vm_map_find.
Without this change, an mprotect on a shmat'ed region fails (when
it shouldn't). This bug was reported Feb 28 by Brooks Davis
<brooks@one-eyed-alien.net> on -hackers.
Reviewed by: bde
Approved by: jkh
o break out some of the probe routine the allocation of resources
into an attach routine
o Recognize PnP ids
o Allocate IRQ per card rather than per system
o Better polling reporting
o Remove unneeded include files in slot.h
o store a pseudo unit number on each device we find.
o Pass a unit number to interrupt/timeout routine and use it for polling
the hardware.
Tested on: My VAIO and with the Linksys pccard reader.
Approved by: jkh
particular ISDN card with the 2nd IDE controller and/or other cards
depending on configuration.
The amount of i/o ports allocated are reduced from 0x40 per range to
0x20 per range.
Submitted by: Andrew Gordon <arg@arg1.demon.co.uk>
Approved by: jkh
being accessed after the bp had been releaed. A simple move of the
brelse() solves the problem.
Approved by: jkh
Submitted by: Ian Dowse <iedowse@maths.tcd.ie>
Without this, kernel will panic at getsockopt() of IPSEC_POLICY.
Also make compilable libipsec/test-policy.c which tries getsockopt() of
IPSEC_POLICY.
Approved by: jkh
Submitted by: sakane@kame.net
according to draft-ietf-ipngwg-icmp-name-lookups-04 to 05 change.
This is necessary before 4.0, because,
-This change is non backword compatible
-Other KAME derived platforms applied 05
-Author of the draft said he never do backword imcompatible changes
again.
Approved by: jkh
Obtained from: KAME project
not actually used yet. This created a lot of prototypes.
I moved code around so that the functions are in the same order as NetBSD - this helps diff a lot.
Things that are missing are the TX routine and ifmedia stuff and ioctls
Not all of the stuff is enabled - we are missing calls in ccs_done and ioctl.
Promiscious mode is working.
Am almost ready to use the NetBSD start up routine - essentially all I need
to do is not use a seperate timer to call download_timo.
Other misc. things:
callout_stop is a newish feature for cancelling a timer without
argument checking it.
tried to add a sysctl knob but it doesn't work in the module
enabled infrastructure code to call netbsd bits.
Change disk names to `idad' to avoid naming conflicts with the controller,
and enable the new disk code to pick up the drives.
Tested by: david.w.james@bt.com (existing compaq support)
Reviewed by: msmith
Approved by: jordan
channel DMA. The problem was that the SDC bit (0x04) can only be set in
the MCE state.
PR: kern/16587
Submitted by: Matthew Reimer <mreimer@vpop.net>
Approved by: jkh (in person)
card configuration hassles.
Added a TODO list so I don't forget to finish stuff.
Tidyed up a lot of XXX.
Tidy'd and documented debugging - all DPRINTF have a debug level associated.
RAY_DEBUG = 1, will log packet errors.
#if protect common memory hacking
Don't rely on pccardd for common memory settings.
Added a simple transmit mode - reasonable performance but not great. Will do a version of the NetBSD chained buffers soon. Yup we have two way transmisson!
Fix a stupid bug in the common memory code - the ioctl call was
hidden behind a debug test!
with the known bogus currtpriority. This undoes the previous changes to
sys/i386/i386/trap.c, sys/alpha/alpha/trap.c, sys/sys/systm.h
Now we have the patch set approved by bde.
Approved by: bde
from panicing when disconnecting a USB Wacom Graphire tablet.
jhk approved the fix some time ago, but I forgot to actually commit the
thing.
Reported by: Dirk van Gulik <dirkx@webweaving.org>
Approved by: jhk
is responsible for this and this will lead to malloc 'freeing already
free' type panics. One was in the probe code, the other was in the
pccard eject? code.
Not explicitly approved by: jkh (but the first is fallout from subr_bus.c
rev 1.54 which was an approved commit, the second is the same problem)
adw_pci.c:
Update comments describing supported chips/cards.
adwcam.c:
adwlib.c:
adwlib.h:
Handle more error return codes from the firmware.
Break out the bus reset code into its own function.
Usa a constant for the bus reset hold delay.
Fix an interrupt race problem in adw_idle_cmd_send by
incorporating the poll loop for command completion.
Approved by: jkh@FreeBSDorg
to us, subr_bus.c will free it. This bug (panic: freeing already free)
was exposed by kern/subr_bus.c rev 1.54
Not explicitly approved by: jkh (but this is a showstopper and fallout of
the above approved change)
transferred, do it in complete_rqe instead.
launch_requests: Replace the inadvertently removed splbio() around the
main loop. It may not be necessary, but the biggest
test of this stuff are IDE disks, which I'm not
using.
Remove throttling code, I'm pretty sure it's not
needed any more.
Don't set B_ORDERED, it's not necessary either.
Objected-to-by: alfred
build_rq_buffer: Don't lose the B_ORDERED bit, it still has some
residual meaning. To do this right, Vinum needs to
look at the B_ORDERED bit and order the transfer
across all disks involved. That's an exercise for
another day.
Objected-to-by: alfred
Implicitly-sanctioned-by: jkh
The driver constructs a fake disklabel that makes the 'a' partition
cover the entire DVD-RAM disk. This cannot be changed from the user
side. This solution was chosen because most DVD-RAM will have a
UDF (or until we have that CD9660) filesystem on it covering the
entire disk, its not really thought as a real random access device.
This might change over time, but for now this is what we have, and
it is compatible with CDROM's etc, that makes using the minidisk
subsystem less than ideal, because of !modulo BDEV_SIZE blocks.
just the first one.
* Don't reserve extra memory for the prom console unless the platform
actually uses it.
* Fix some historical confusion and a minor bug in the message buffer
initialisation.
Submitted by: gallatin for the prom console part
Approved by: jkh
VINUM_BDEV_MAJOR and VINUM_CDEV_MAJOR respectively.
Set DRIVE_MAXACTIVE and VINUM_MAXACTIVE to 30000, effectively
disabling the request limitation code. This code was added as an
attempt to escape from a bug which seems to have gone away, and it's
very likely I'll remove the code Real Soon Now, but I don't want to do
it just yet.
struct drive: Remove references to vnode pointers, including debug
output. Vinum now talks directly to the device driver. Instead, add
a dev_t.
enum plexorg: Add an instance for RAID-4.
Change checks for striped or RAID-5 plexes to a macro 'isstriped',
which now also includes RAID-4.
Change checks for RAID-5 plexes to a macro 'isparity', which now also
includes RAID-4.
Approved-by: jkh
set_sd_state: update the state of a subdisk in a multi-plex volume
more correctly.
update_plex_state: Bring the plex up correctly when the last subdisk
comes up.
checksdstate: Update comments.
vpstate: Don't return an "up" state on a degraded, unattached plex.
start_object: Return a sensible error message when trying to revive a
subdisk whose drive is down. Previously it returned EBUSY.
Approved-by: jkh
data corruption. It's a wonder it worked at all.
Led-on-the-right-path-by: dillon
revive_block: Add treatment for RAID-4.
Add function parityrebuild, called by revive_block and parityops.
Approved-by: jkh
the tsleep call flags.
Submitted-by: Bernd Walter <ticso@cicely.de>
Remove references to vnode pointers, including debug output. Vinum
now talks directly to the device driver.
bre: Add case for RAID-4.
sdio: Don't try to write to a down drive. Set the sd state instead.
Approved-by: jkh
vn_open. This is necessary in order to be able to open drives before
the root file system is mounted. This also involves restructuring the
drive struct, which no longer contains a vnode pointer. Instead,
open_drive sets an open flag. It's a horrible kludge, and I'll gladly
borrow a Danish axe and hack it in little pieces when devfs comes.
read_drive, write_drive, drive_io_done: Replace with driveio. The
function names are now macros.
driveio: Fix horrible, embarrassing breakage which was the reason why
read_drive and write_drive existed in the first place.
Code-torn-to-shreds-by: dillon
format_config: Don't save config of objects in referenced state. They
get rebuilt automatically.
Change checks for striped or RAID-5 plexes to a macro 'isstriped',
which now also includes RAID-4.
Change checks for RAID-5 plexes to a macro 'isparity', which now also
includes RAID-4.
Replace the preprocessor variable names BDEV_MAJOR and CDEV_MAJOR with
VINUM_BDEV_MAJOR and VINUM_CDEV_MAJOR respectively.
vinum_scandisk: Don't free memory twice on error, once is enough.
Approved-by: jkh
to RAID-5. peter claims that it might be faster for sequential
reading, since the drive caches don't trip over the parity blocks. I
have seen no evidence to support this, but it's a trivial change.
Requested-by: peter
Change checks for striped or RAID-5 plexes to a macro 'isstriped',
which now also includes RAID-4.
Change checks for RAID-5 plexes to a macro 'isparity', which now also
includes RAID-4.
atoi(): Remove, nobody was talking to it.
give_sd_to_drive: If no space is available, make the subdisk down,
don't delete it.
Change the manner in which the subdisk count was maintained to avoid
cases where the count was not adjusted correctly.
config_drive: Check if we have subdisks referencing us, and add them
if so. This fixes problems which arose when a drive is replaced in a
running system.
config_sd: Add support for a keyword 'partition', whose meaning will
be revealed in the fullness of time.
Cosmetic: Shorten some console messages.
Approved-by: jkh
to SI_SUB_VINUM, thus making it possible for Vinum to access I/O
devices and start.
Replace the preprocessor variable names BDEV_MAJOR and CDEV_MAJOR with
VINUM_BDEV_MAJOR and VINUM_CDEV_MAJOR respectively.
Style fixes: replace NULL with 0 where appropriate.
Submitted-by: Charlie Root <root@sms-1.follo.net> (yup, that's all I
have to go on).
Approved-by: jkh
seriously- only attempt to logout a previously logged in fabric device.
Fix a longstanding bug for aborting overtime commands- handle halves
have always been reversed.
Clean up some error messages to indicate channel number.
Approved:jkh
is triggered when qmail is used with INET6 enabled. The bug
manifests itself in that the space variable can become negative
and that in the comparison in the guards of the 2 loops, this was
not noticed because sizeof() returns an unsigned and thus the signed
variable gets promoted to unsigned. I decided not to make space
unsigned because I think we should guard against this from happening.
Thus panic() in case space becomes negative.
Approved by: jkh
parents flags.
Note on the PR:
The PR contains another patch that's not being committed without
further background information. The PR stays open for now.
PR: 16946 (Victor A. Salaman <salaman@teknos.com>)
Prompted by: msmith
Indirect/implicit approval: jkh (shoot me if I'm wrong :-)
This
This feature allows you to specify if mmap'd data is included in
an application's corefile.
Change the type of eflags in struct vm_map_entry from u_char to
vm_eflags_t (an unsigned int).
Reviewed by: dillon,jdp,alfred
Approved by: jkh
Added receive code and support for Webgear encapsulation.
More debugging macros/functions.
conditionalised timeout for start/join network
conditonalised attribute/common memory hacks
identified tracking code with XXX_TRACK
sorted out initialistion of instance structure to some extent
finished docuementing the start/join sequence
The code doesn't compile (I'll do that in a minute), but functionally
it gets to receveing the interrupt from the start or join net command.
There is a lot of code to deal with the limitations of the PCCard memory
mapping code - I'm changing some of it hence the check in to preserve something
that worked.
how the kernel was booted and perhaps do conditional things
based upon it (sysinstall, for example, will now turn Debug mode
on automatically if boot -v was done).
Submitted by: msmith
Suggested by: ulf
Call intr_teardown on detach.
Always add non masterdevice from unit 2 upwards.
Update to the pccard code, at least some cards are now working,
more testing to follow.
First, it was failing to reset the PCB's pcb_onfault member to NULL.
Under some really obscure circumstances this might cause a wild jump
within the kernel when a panic would otherwise occur. Second, the
handler was loading the GP register needlessly and with an incorrect
value.
Reviewed by: Doug Rabson <dfr>
Approved by: Jordan Hubbard <jkh>
filesystem fills up. If the first indirect block exists and FFS is able
to allocate deeper indirect blocks, but is not able to allocate the
data block, FFS improperly unwinds the indirect blocks and leaves a
block pointer hanging to a freed block. This will cause a panic later
when the file is removed. The solution is to properly account for the
first block-pointer-to-an-indirect-block we had to create in a balloc
operation and then unwind it if a failure occurs.
Detective work by: Ian Dowse <iedowse@maths.tcd.ie>
Reviewed by: mckusick, Ian Dowse <iedowse@maths.tcd.ie>
Approved by: jkh
Now this check is necessary because IPv6 source routing might use
control data bigger than MLEN. (e.g. 16bytes IPv6 addr x 23 hops)
Actually mbuf cluster should be used in uipc_socket.c:sbcreatecontrol()
and uipc_syscalls.c:sockargs() when data size is bigger then MLEN,
and such patches were already in KAME environment and have been
confirmed to work well. I just forgot to merge them into 4.0, sorry.
For safety, I'll postpone such patches until after 4.0 release.
The effect of postponement is followings.
-Ping6 source routing hops are limitted to around 6 or so.
-If some apps do setsockopt IPV6_RTHDR and try to receive
incoming IPv6 source routing info, it can't receive more
than 6 hops source routing info.
(But currently, no apps seems to be doing it.)
Approved by: jkh
VFS_AIO option is specified, all aio-related syscalls return ENOSYS.
The aio code is very fragile right now, and is unsuitable for default
inclusion in a production shell box.
Approved by: jkh
to the current jail/chflags interactions. This fix conditionalizes ``root
behavior'' in the chflags() case on not being in jail, so attempts to
perform a chflags in a jail are limited to what a normal user could do.
For example, this does allow setting of user flags as appropriate, but
prohibits changing of system flags.
Reviewed by: bde
Enable the driver in sys/conf/files.i386.
In isa/isavar.h increase ISA_NPORT from 32 to 50. This is required
because this brain-damaged card maps 49 (!) port ranges. This does
not have a negative impact because this value only specifies the maximum
number of entries in a linked list and not the size of an array which
is allocated in all drivers.
The register/fifo access routines were not newbus-ified because
1) I knew that the old code worked and is simpler and more efficient
2) the if_ed driver does something similar and
3) the newbus macros collapse to inb/outb anyway.
Reviewed and tested by: hm
Approved by: jkh
was using them exits.
Don't allow a user process to cause the kernel to take a TRCTRAP on a
user space address.
Reviewed by: jlemon, sef
Approved by: jkh
it should have been to start with. The implications of that are not
pleasant when combined with >> as it breaks on multiples of NFDBITS.
Right shifting of a signed value fills with a copy of the sign bit,
not a zero.
Reported by: bde
fd's in the range of 32-63, 96-127 etc. The first problem was the
FD_*() macros were shifting a 32 bit integer "1" left by more than
32 bits. The same problem happened in selscan(). ffs() also takes
an int argument and causes failure. For cases where int == long
(ie: the usual case for x86, but not always as gcc can have long
being a 64 bit quantity) ffs() could be used.
Reported by: Marian Stagarescu <marian@bile.skycache.com>
Reviewed by: dfr, gallatin (sys/types.h only)
Approved by: jkh
256 bytes) caused it to break on many devices.
The SCSI spec says that for commands with 8-bit length fields, a value of 0
means 256 bytes. As it turns out, many devices don't deal with that
properly. Some interpret the 0 as 0, and return no data. Others return
more than 256 bytes of data, and cause an overrun.
The fix is to tell the device we've only allocated SHORT_INQUIRY_LENGTH (36
bytes) of inquiry data, instead of sizeof(struct scsi_inquiry_data).
camcontrol.c: Change inq_len in the call to scsi_inquiry() to
SHORT_INQUIRY_LENGTH, and add a long comment
explaining the reason for the change.
scsi_all.h: Add a comment above the definitinon of
SHORT_INQUIRY_LENGTH alerting people that it is
both the initial probe inquiry length, and the
minimum amount of data needed for scsi_print_inquiry()
to function.
scsi_all.c: Add a comment about SHORT_INQUIRY_LENGTH being the
minimum amount of data needed for
scsi_print_inquiry() to function.
Reviewed by: gibbs
Approved by: jkh
Reported by: "John W. DeBoskey" <jwd@unx.sas.com>
a mess in securelevel environments. Results in one warning during
/etc/rc as it attempts to remove file flags, but this is harmless.
Approved by: High Lord Hubbard
from useful drivers such as the 3D DRI drivers I will be porting for
hardware accelerated OpenGL. The hardware will still be reported during
boot using the nomatch system.
Approved by: jkh
was needed to make attach/detach of devices work, which is
needed for the PCCARD support.
(PCCARD support is still not working though, more to come on that)
Support the CMD646 chip which is used on many alphas, sadly only
in WDMA2 mode, as the silicon is broken beyond belief for UDMA modes.
Lots of cosmetic fixes here and there.
Sorry for the size of this megapatchfromhell but it was not
possible otherwise...
newbus patches based on work from: dfr (Doug Rabson)
accept a new command; in high load cases it may be too busy for the old
value.
This loop needs something to tie it to real time, rather than just the CPU's
ability to fetch from the L1 data cache, but this hack works for now.
Approved by: jkh
firmware prompt. Several sleepy folk mistook the '>>>' for the SRM
prompt, which was never the desired idea.
Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
Approved by: jkh
fixes some namespace pollution in general and breakage of modules that
aren't in the sys tree in particular (<machine/ipl.h> includes further
headers that aren't installed under /usr/include).
Reimplemented SPLASSERT() so that it is more machine independent and
less bloated and doesn't require the <machine/ipl.h> include spam.
In particular, don't assume that `cpl' can be printed using %08x
format. The alpha arch doesn't even have `cpl'. SPLASSERT() was
harmless on alphas because it isn't actually used.
run out of KVM through a mmap()/fork() bomb that allocates hundreds
of thousands of vm_map_entry structures.
Add panic to make null-pointer dereference crash a little more verbose.
Add a new sysctl, vm.max_proc_mmap, which specifies the maximum number
of mmap()'d spaces (discrete vm_map_entry's in the process). The value
defaults to around 9000 for a 128MB machine. The test is scaled for the
number of processes sharing a vmspace (aka linux threads). Setting
the value to 0 disables the feature.
PR: kern/16573
Approved by: jkh
1) Fix a bug in the int15 function 87 emulation where we only copied half
of what the BIOS asked for. This caused the Mylex RAID adapter to go
haywire and start trashing memory when you tried to boot from it.
2) Don't use interrupt 19 to reboot. Instead, set the reboot flag to a warm
boot and jump to the BIOS's reboot handler. int 19 doesn't clear memory
or restore the interrupt vector table, and thus really isn't safe. For
example, when booting off of PXE, the PXE BIOS eats up a chunk of memory
for its internal data and structures. Since we rebooted via int 19,
using the 'reboot' command in the loader resulted in that memory not
being reclaimed by the BIOS. Thus, after a few PXE boots, the system
was out of lower memory.
3) Catch any int 19 calls made by a BTX client or a user pressing
Ctrl-Alt-Delete and shutdown BTX and reboot the machine cleanly. This
fixes Ctrl-Alt-Delete in the loader and in boot2 instead of presenting
the user with a BTX fault.
Approved by: jkh
Found by: 1) by msmith
