gjb [Wed, 11 Feb 2015 20:50:25 +0000 (20:50 +0000)]
Add CROSS_TOOLCHAIN for arm builds.
Remove a BOARDS entry left in while testing.
Add build-arm-ports${BOARD} target as a prerequisite when
ARMPORTS is set.
Add build-arm-KERNCONF and build-arm-ports to CLEANFILES.
marcel [Wed, 11 Feb 2015 17:56:24 +0000 (17:56 +0000)]
Close the file list before opening the container that holds the
totals, otherwise we end up emitting invalid JSON -- provided
libxo does not prevent us from doing that.
tijl [Wed, 11 Feb 2015 17:25:23 +0000 (17:25 +0000)]
Fix ldscripts such that ld(1) collects the .fini_array section in the same
order as the .init_array section. Finalisation routines need to be called
in the opposite order as their corresponding initialisation routines but
rtld(1) handles that by calling the function pointers in .fini_array in
reverse order.
jhb [Wed, 11 Feb 2015 15:49:14 +0000 (15:49 +0000)]
MFi386:
When building some of the boot loaders with clang, and DEBUG_FLAGS or
CFLAGS having '-g' in it, clang outputs several assembly directives that
are too new for our version of binutils.
Therefore, assemble the resulting .s files with clang instead. A more
general solution can be implemented when a GNU as-compatible driver for
clang's integrated assembler appears.
bdrewery [Tue, 10 Feb 2015 20:45:40 +0000 (20:45 +0000)]
When catopen(3) returns an error, it caches the result of that error
from r202992. The refcount on the cache entry is not initialized, so
any attempt to clean the cache will skip over this item since it likely
has a >0 value.
This change is currently a NOP. There is work in progress to support
freeing the cache which requires this change to avoid a memory leak.
kib [Tue, 10 Feb 2015 18:00:32 +0000 (18:00 +0000)]
Mountd iterating over the mount points may race with the parallel
unmount, which causes error from nmount(2) call when performing
MNT_DELEXPORT over the directory which ceased to be a mount point.
The race is legitimate and innocent, but results in the chatty mountd.
Silence it by providing an distinguished error code for the situation,
and ignoring the error in mountd loop.
Based on the patch by: Andreas Longwitz <longwitz@incore.de>
Prodded and tested by: bdrewery
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
trasz [Tue, 10 Feb 2015 16:17:16 +0000 (16:17 +0000)]
Restore ABI compatibility, broken in r273127. Note that while this fixes
ABI with 10.1, it breaks ABI for 11-CURRENT, so rebuild of automountd(8)
is neccessary.
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
royger [Tue, 10 Feb 2015 13:07:08 +0000 (13:07 +0000)]
rc.d: load the network config file for netif
r272959 broke compatibility with mfsBSD that stores the default network
config file in /etc/rc.conf.d/network. In order to fix that load the network
config file from netif also.
hselasky [Tue, 10 Feb 2015 12:08:52 +0000 (12:08 +0000)]
Revert r274918 and make a better solution. Poll the synchronisation
endpoint less frequently to make the sample rate adjustment more
accurate. This should resolve problems with the DN32-USB module for
Midas audio systems and possibly other similar products from Klark
Teknik.
gjb [Tue, 10 Feb 2015 12:04:38 +0000 (12:04 +0000)]
In scripts/mk-vmimage.sh, prevent incorrect usage() by
defaulting VMCONFIG to /dev/null, and additionally
ensuring VMCONFIG is not a character device before it
is sourced.
While here, be sure to exit if usage() is called.
This should effectively be no-op, but the usage() output
was discovered while investigating a larger issue.
MFC after: 1 week
X-MFC-with: r277458, r277536, r277606, r277609,
r277836, r278118, r278119, r278206
Sponsored by: The FreeBSD Foundation
rpaulo [Tue, 10 Feb 2015 06:35:16 +0000 (06:35 +0000)]
Remove FreeBSD/wii.
This port failed to gain traction and probably only a couple Wii consoles
ran FreeBSD all the way to single user mode with an md(4). IPC
support was never implemented, so it was impossible to use any peripheral
Any further development, if any, will happen at https://github.com/rpaulo/wii.
Discussed with: nathanw (a long time ago), jhibbits
nwhitehorn [Tue, 10 Feb 2015 00:55:42 +0000 (00:55 +0000)]
Set thread priorities on multithreaded CPUs so that threads holding a
spinlock are high-priority and threads waiting for a spinlock are set to
low priority.
rpaulo [Mon, 9 Feb 2015 23:13:50 +0000 (23:13 +0000)]
Notify devd(8) when a process crashed.
This change implements a notification (via devctl) to userland when
the kernel produces coredumps after a process has crashed.
devd can then run a specific command to produce a human readable crash
report. The command is most usually a helper that runs gdb/lldb
commands on the file/coredump pair. It's possible to use this
functionality for implementing automatic generation of crash reports.
devd(8) will be notified of the full path of the binary that crashed and
the full path of the coredump file.
kib [Mon, 9 Feb 2015 21:00:56 +0000 (21:00 +0000)]
Add x2APIC support. Enable it by default if CPU is capable. The
hw.x2apic_enable tunable allows disabling it from the loader prompt.
To closely repeat effects of the uncached memory ops when accessing
registers in the xAPIC mode, the x2APIC writes to MSRs are preceeded
by mfence, except for the EOI notifications. This is probably too
strict, only ICR writes to send IPI require serialization to ensure
that other CPUs see the previous actions when IPI is delivered. This
may be changed later.
In vmm justreturn IPI handler, call doreti_iret instead of doing iretd
inline, to handle corner conditions.
Note that the patch only switches LAPICs into x2APIC mode. It does not
enables FreeBSD to support > 255 CPUs, which requires parsing x2APIC
MADT entries and doing interrupts remapping, but is the required step
on the way.
Reviewed by: neel
Tested by: pho (real hardware), neel (on bhyve)
Discussed with: jhb, grehan
Sponsored by: The FreeBSD Foundation
MFC after: 2 months
rrs [Mon, 9 Feb 2015 19:28:11 +0000 (19:28 +0000)]
This fixes a bug in the way that the LLE timers for nd6
and arp were being used. They basically would pass in the
mutex to the callout_init. Because they used this method
to the callout system, it was possible to "stop" the callout.
When flushing the table and you stopped the running callout, the
callout_stop code would return 1 indicating that it was going
to stop the callout (that was about to run on the callout_wheel blocked
by the function calling the stop). Now when 1 was returned, it would
lower the reference count one extra time for the stopped timer, then
a few lines later delete the memory. Of course the callout_wheel was
stuck in the lock code and would then crash since it was accessing
freed memory. By using callout_init(c, 1) we always get a 0 back
and the reference counting bug does not rear its head. We do have
to make a few adjustments to the callouts themselves though to make
sure it does the proper thing if rescheduled as well as gets the lock.
Commented upon by hiren and sbruno
See Phabricator D1777 for more details.
Commented upon by hiren and sbruno
Reviewed by: adrian, jhb and bz
Sponsored by: Netflix Inc.
rrs [Mon, 9 Feb 2015 19:19:44 +0000 (19:19 +0000)]
This fixes two conditions that can incur when migration
is being done in the callout code and harmonizes the macro
use.:
1) The callout_active() will lie. Basically if a migration
is occuring and the callout is about to expire and the
migration has been deferred, the callout_active will no
longer return true until after the migration. This confuses
and breaks callers that are doing callout_init(&c, 1); such
as TCP.
2) The migration code had a bug in it where when migrating, if
a two calls to callout_reset came in and they both collided with
the callout on the wheel about to run, then the second call to
callout_reset would corrupt the list the callout wheel uses
putting the callout thread into a endless loop.
3) Per imp, I have fixed all the macro occurance in the code that
were for the most part being ignored.
Phabricator D1711 and looked at by lstewart and jhb and sbruno.
Reviewed by: kostikbel, imp, adrian, hselasky
MFC after: 3 days
Sponsored by: Netflix Inc.
imp [Mon, 9 Feb 2015 16:29:44 +0000 (16:29 +0000)]
Prefer install over mkdir to create the directory. Add test to ensure
the directory doesn't exist before creating it. This makes the NO_ROOT
case actually work.
imp [Mon, 9 Feb 2015 16:04:08 +0000 (16:04 +0000)]
We need to create /boot/dtb since some use cases don't create a full
root with BSD.root.mtree, so it often times will not exist. Rather
than force the latter for an installkernel, just create the directory
with a comment about why.
nwhitehorn [Mon, 9 Feb 2015 15:58:27 +0000 (15:58 +0000)]
Mark invalid page table entries correctly for PMAP as well as for the
hypervisor. This prevents an infinite loop where processes with evicted
pages would page fault forever when PMAP decided the evicted pages on
which the process was faulting was actually present and did not need to
be restored.
Properly hide a variable under #ifdef as it is only used inside the
specific #ifdef block otherwise leaving an unused variable and breaking
other kernel builds.
gjb [Mon, 9 Feb 2015 10:46:39 +0000 (10:46 +0000)]
Revert r278445.
I was going to use __FreeBSD_version to determine if
xz(1) should be multi-threaded by default, but doing
this will cause problems if/when the changes are merged
from head.
gjb [Mon, 9 Feb 2015 10:42:27 +0000 (10:42 +0000)]
Enable multi-threaded xz(1) compression, after r278433.
Allow multi-threaded xz(1) to be turned off by specifying
NO_XZTHREADS, and allow number of threads to be overridden
by specifying XZ_THREADS=N.
MFC after: 1 week
X-MFC-needs: r278433
Sponsored by: The FreeBSD Foundation
rpaulo [Mon, 9 Feb 2015 06:20:34 +0000 (06:20 +0000)]
Merge xz 5.2.0.
This brings support for multi-threaded compression. This brings close
N times faster compression where N is the number of CPU cores.
Because of this, liblzma now depends on libthr.
Soon libarchive will be modified to use the new lzma API.
gonzo [Mon, 9 Feb 2015 02:31:27 +0000 (02:31 +0000)]
Do not mark shared structures as __packed, it leads to race condition
If structure packed as __packed clang (and probably gcc) generates
code that loads word fields (e.g. tx_pos) byte-by-byte and if it's
modified by VideoCore in the same time as ARM loads the value result
is going to be mixed combination of bytes from previous value and
new one.
nwhitehorn [Mon, 9 Feb 2015 02:17:21 +0000 (02:17 +0000)]
Fix an extremely subtle concurrency bug triggered by running on 32-thread
POWER8 systems. During thread switch, there was a very small window when
the stack pointer was set to the stack pointer of the outgoing thread, but
after the lock on that thread had already been released.
If, during that window, the outgoing thread were rescheduled on another CPU
and begin execution and an exception were taken on the original CPU, the
trap handler and the outgoing thread would simultaneously execute on the same
stack, causing memory corruption. Fix this by making sure to release the
old thread only after cpu_switch() is done with its stack.
MFC after: 2 weeks
Sponsored by: FreeBSD Foundation
nwhitehorn [Mon, 9 Feb 2015 02:12:38 +0000 (02:12 +0000)]
Simplify trapcode setup by placing a copy of the generic trap handler at
every possible trap address by default. This also makes sure the kernel
notices (and panics at) traps from newer CPUs that the kernel was not
expecting rather than executing gibberish memory.
nwhitehorn [Sun, 8 Feb 2015 16:50:00 +0000 (16:50 +0000)]
Add some error checking on the supplied page size list. This makes sure
that we (a) get the correct large page size to provide to pmap and (b)
we can alert the user if running under incorrectly-configured PowerKVM
on POWER7 and POWER8 systems.
cxgbe(4): tidy up some of the interaction between the Upper Layer
Drivers (ULDs) and the base if_cxgbe driver.
Track the per-adapter activation of ULDs in a new "active_ulds" field.
This was done pretty arbitrarily before this change -- via TOM_INIT_DONE
in adapter->flags for TOM, and the (1 << MAX_NPORTS) bit in
adapter->offload_map for iWARP.
iWARP and hw-accelerated iSCSI rely on the TOE (supported by the TOM
ULD). The rules are:
a) If the iWARP and/or iSCSI ULDs are available when TOE is enabled then
iWARP and/or iSCSI are enabled too.
b) When the iWARP and iSCSI modules are loaded they go looking for
adapters with TOE enabled and enable themselves on that adapter.
c) You cannot deactivate or unload the TOM module from underneath iWARP
or iSCSI. Any such attempt will fail with EBUSY.