When looking up the absolute path for a kld, call find_kld_path() first.
This enables locating the module in a different directory than the one
stored in kernel memory.
With this change, kgdb can now be run on a kernel & vmcore whose associated
modules are located in the same directory as the kernel. This makes
independent triaging of problems much easier.
This change also does not break the normal kgdb use case where no arguments
are specified; in that case kgdb loads the running kernel and its modules.
Reviewed by: adrian
Approved by: ken (mentor)
Sponsored by: Spectra Logic
MFC after: 1 month
later found to not be usable because the controller doesn't support the
same number of queues.
This is not the normal case, but does occur with the Chatham prototype
board.
Sponsored by: Intel
1. If we wanted to send exactly as many bytes as the socket buffer is
sized for, the inner loop of kern_sendfile() would see that the
socket is full before seeing that it had no more bytes left to send.
This would cause it to return EAGAIN to the caller instead of
success. Fix by changing the order that these conditions are tested.
2. Simplify the calculation for the bytes to send in each iteration of
the inner loop of kern_sendfile()
3. Fix some calls with bogus arguments to sf_buf_ext(). These would
only trigger on mbuf allocation failure, but would be hilariously
bad if they did trigger.
Submitted by: gibbs(3), andre(2)
Reviewed by: emax, andre
Obtained from: Netflix
MFC after: 1 week
unmapped I/O. That one exception is access to INQUIRY VPD request result.
Those requests are never unmapped now, but to be safe add respective check
there and allow unmapped I/O for the SIM by setting PIM_UNMAPPED flag.
The rules themselves typically have shell-like patterns and it is
incorrect when they get replaced with matching filesystem entries.
Shell magic by: jilles
MFC after: 2 weeks
before the vnode is vput() in vm_mmap_vnode(). Error return means
that there is no use reference on the vnode from the vm object
reference, and failing to restore v_writecount breaks the invariant
that v_writecount is less or equal to the usecount.
The situation observed when nfs client returns ESTALE for
VOP_GETATTR() after the open.
In collaboration with: pho
MFC after: 1 week
This was ported from the AR724x code and I think that also doesn't
quite work. I'll investigate that soon.
With this in place the system reset path works, so 'reset' from kdb
actually resets the SoC.
Tested:
* AP121 test board
DW_FORM_flag_present dwarf attribute, so they do not print errors or
warnings on files that contain it. (This attribute can be emitted by
newer versions of clang and gcc.)
MFC after: 1 week
Before this change they were just leaked. Fortunately USB sticks now use
only one CCB, and so leak was only 2KB per detach, while other bigger SIMs
with much more allocated CCBs are rarely detached.
MFC after: 2 weeks
This basically restores the spirit of r203535, which was partially reverted
in r205557, while we still map fixed amount to work around transient issues
we experienced with r203535.
Prodded by: avg
Tested by: avg
MFC after: 1 week
the thread reference on the vp->v_rdev and use the returned struct
cdev *dev instead of using vp->v_rdev. Call dev_strategy_csw()
instead of dev_strategy(), since we now own the reference.
Since the csw was already calculated, test d_flags to avoid mapping
the buffer if the driver supports unmapped requests [*].
Suggested by: kan [*]
Reviewed by: kan (previous version)
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
but assumes that a thread reference was already obtained on the passed
device. Use the function from physio(), to avoid two extra dev_mtx
lock and unlock. Note that physio() is always used as the cdevsw
method, or is called from a cdevsw method, and the caller already owns
the reference.
dev_strategy() is left to keep KPI intact, but now it is implemented
as a wrapper around dev_strategy_csw().
Do some style cleanup in physio().
Requested and reviewed by: kan (previous version)
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
maxbcache size fixed, the auto-tuned transient map is too small for
real-world load on i386.
Tested by: David Wolfskill
Sponsored by: The FreeBSD Foundation
buffer map size, auto-tuned on the 4GB machine. Having the maxbcache
bigger than the buffer map causes the transient bio map sizing logic
to assume that there is enough KVA to use approximately 90MB (buffer
map is sized to 110MB, and maxbcache is 200MB). The increase in the
KVA usage caused other big KVA consumers, like nvidia.ko, to fail the
initialization.
Change the definition for both PAE and non-PAE cases, since PAE is
even more KVA-starved.
Reported and tested by: David Wolfskill
Discussed with: alc
Sponsored by: The FreeBSD Foundation
Removed the check for regex.h in configure in order
to disable regex syntax checking, as it exposes
BIND to a critical flaw in libregex on some
platforms. [RT #32688]
Security: CVE-2013-2266
Approved by: delphij (mentor)
Sponsored by: DK Hostmaster A/S
which requires OVREF to be set to get proper playback volume, but which has
all zeroes in HDA controller subdevice IDs on PCI.
MFC after: 1 month
Sponsored by:
CPUs.
The AR933x is a mips24k based SoC with an AR9380 series SoC on board,
two gigabit ethernet interfaces and an internal 10/100mbit ethernet
switch. There's also the normal interfaces (USB, ethernet, uart, GPIO.)
The downside? There's a non-ns8250 UART device.
With a very basic UART driver (not in this commit) the SoC is initialised
and boots up. I'll commit the UART code soon and then link it into the
general setup path.
This code is a re-implementation based from the Linux kernel / openwrt
AR933x support.
TODO:
* UART (obviously)
* All of the ethernet, USB and wifi SoC glue, including ethernet PLL
programming.
data buffer for a ccb that is unmapped.
This case is currently not possible, since the SCI framework only
requests these pointers for doing SCSI/ATA translation of non-
READ/WRITE commands. The panic is more to protect against the
unlikely future scenario where additional commands could be unmapped.
Sponsored by: Intel
the most-recently archived logfile and use its mtime to determine whether
or not to rotate, as in the non-timestamped case.
Previously we would just try to use the mtime of <logfile>.0, which always
results in a rotation since it generally doesn't exist in the -t case.
PR: bin/166448
Approved by: emaste (co-mentor)
Tested by: Marco Steinbach <coco executive-computing.de>
MFC after: 2 weeks
While almost nobody uses O_ASYNC, and rightly so, the inheritance of the
related properties across accept() is a portability issue like the
inheritance of O_NONBLOCK.
fail in nvmecontrol(8).
While here, use consistent checks of return values from stat, open and
ioctl.
Sponsored by: Intel
Suggested by: carl
Reviewed by: carl
mechanism.
Now that all requests are timed, we are guaranteed to get a completion
notification, even if it is an abort status due to a timed out admin
command.
This has the effect of simplifying the controller and namespace setup
code, so that it reads straight through rather than broken up into
a bunch of different callback functions.
Sponsored by: Intel
Reviewed by: carl
start or reset. Also add a notifier for NVMe consumers for controller fail
conditions and plumb this notifier for nvd(4) to destroy the associated
GEOM disks when a failure occurs.
This requires a bit of work to cover the races when a consumer is sending
I/O requests to a controller that is transitioning to the failed state. To
help cover this condition, add a task to defer completion of I/Os submitted
to a failed controller, so that the consumer will still always receive its
completions in a different context than the submission.
Sponsored by: Intel
Reviewed by: carl
This is just as effective, and removes the need for a bunch of admin commands
to a controller that's going to be disabled shortly anyways.
Sponsored by: Intel
Reviewed by: carl
start process.
The spec indicates the OS driver should use Set Features (Software
Progress Marker) to set the pre-boot software load count to 0
after the OS driver has successfully been initialized. This allows
pre-boot software to determine if there have been any issues with the
OS loading.
Sponsored by: Intel
Reviewed by: carl
This flag was originally added to communicate to the sysctl code
which oids should be built, but there are easier ways to do this. This
needs to be cleaned up prior to adding new controller states - for example,
controller failure.
Sponsored by: Intel
Reviewed by: carl
The controller's IDENTIFY data contains MDTS (Max Data Transfer Size) to
allow the controller to specify the maximum I/O data transfer size. nvme(4)
already provides a default maximum, but make sure it does not exceed what
MDTS reports.
Sponsored by: Intel
Reviewed by: carl
that if a specific I/O repeatedly times out, we don't retry it indefinitely.
The default number of retries will be 4, but is adjusted using hw.nvme.retry_count.
Sponsored by: Intel
Reviewed by: carl
