MAXPHYS. Current ataahci driver memory allocation scheme includes only
64 items in DMA S/G table, and so not guarantied to support transactions
with more then 252K data.
Approved by: re (kensmith)
MFC after: 2 weeks
is invalid because the ioctl happens without prior open. The ioctl
got introduced to provide backward compatibility for extended
partitions, but it ended up not being used because it didn't work
as expected. Since there are no consumers of the ioctl and the
implementation is broken, the best fix is to remove the code
entirely.
Spotted by: phk
Approved by: re (kensmith)
under VM environments, it's too slow for FreeBSD to work
properly. For example, ping at 10hz pings about every 600ms
instead of about every second.
Approved by: re (kib)
when all writers, observed by reader, exited. Use writer generation
counter for fifo, and store the snapshot of the fifo generation in the
f_seqcount field of struct file, that is otherwise unused for fifos.
Set FreeBSD-undocumented POLLINIGNEOF flag only when file f_seqcount is
equal to fifo' fi_wgen, and revert r89376.
Fix POLLINIGNEOF for sockets and pipes, and return POLLHUP for them.
Note that the patch does not fix not returning POLLHUP for fifos.
PR: kern/94772
Submitted by: bde (original version)
Reviewed by: rwatson, jilles
Approved by: re (kensmith)
MFC after: 6 weeks (might be)
to simultaneously change the PAT setting for the same pages within the
direct map region. This may require the demotion of a 2MB page mapping and
the allocation of a page table page. This revision gives the highest
possible priority (VM_ALLOC_INTERRUPT) to this page allocation, so that
pmap_change_attr() is less likely to fail. (In general, kernel page table
page allocations have the highest priority, so this is not creating a new
precedent.)
(Demotion of 1GB page mappings within the direct map already specifies
VM_ALLOC_INTERRUPT to vm_page_alloc(), so only pmap_demote_pde() must be
changed.)
Approved by: re (kib)
when the interrupt was moved from one CPU to another. If the interrupt was
enabled, then the old IDT vector needs to be disabled and the new IDT vector
needs to be enabled. This was mostly masked prior to the recent MSI changes
since in the older code almost all allocated IDT vectors were already enabled
and the enabled vectors on the BSP during boot covered enough of the IDT
range. However, after the MSI changes, MSI interrupts that were allocated
but not enabled (e.g. DRM with MSI) during boot could result in an allocated
IDT vector that wasn't enabled. The round-robin at the end of boot could
place another interrupt at the same IDT vector without enabling the IDT
vector causing trap 30 faults.
Fix this by explicitly disabling/enabling the old and new IDT vectors for
enabled interrupt sources when moving an interrupt between CPUs via the
pic_assign_cpu() method. While here, fix a bug in my earlier changes so
that an I/O APIC interrupt pin is left unchanged if ioapic_assign_cpu()
fails to allocate a new IDT vector and returns ENOSPC.
Approved by: re (kensmith)
4-entry table that must be located within the first 4GB of RAM. This
requirement is met by defining an UMA zone with a custom back-end
allocator function. This revision makes two changes to this back-end
allocator function: (1) It replaces the use of contigmalloc() with the
use of kmem_alloc_contig(). This eliminates "double accounting", i.e.,
accounting by both the UMA zone and malloc tags. (I made the same
change for the same reason to the zones supporting jumbo frames a week
ago.) (2) It passes through the "wait" parameter, i.e., M_WAITOK,
M_ZERO, etc. to kmem_alloc_contig() rather than ignoring it.
pmap_init() calls uma_zalloc() with both M_WAITOK and M_ZERO. At the
moment, this is harmless only because the default behavior of
contigmalloc()/kmem_alloc_contig() is to wait and because pmap_init()
doesn't really depend on the memory being zeroed.
The back-end allocator function in the Xen pmap is dead code. I am
changing it nonetheless because I don't want to leave any "bad examples"
in the source tree for someone to copy at a later date.
Approved by: re (kib)
long-term work before they can be serviced. Packets are tagged and
assigned an age (in seconds) at the point they are added to the
queue. If a packet is not retrieved before it's age expires it is
reclaimed. Tagging can take two forms: a reference to an ieee80211_node
(as happens in the tx path) or an opaque token in cases where there
is no reference or the node structure is not stable (i.e. it's going
to be destroyed).
o add ic_stageq to replace the per-node wds staging queue used for
dynamic wds
o add ieee80211_mac_hash for building ageq tokens; this computes a
32-bit hash from an 802.11 mac address (copied from the bridge)
o while here fix a stray ';' noticed in IEEE80211_PSQ_INIT
Reviewed by: rpaulo
Approved by: re (kensmith)
This cause dramatic effect in overall precision and conversion quality
by pushing down most aliasing artifacts around -180 dB.
Spectrogram analysis/comparison:
http://people.freebsd.org/~ariff/z_comparison/z_28vs30/
- Guard against possible 64bit overflow during accumulation process by
slightly normalize and saturate sample and coefficient multiplication,
possible during extreme 32bit downsampling (eg. 380KHz -> 8KHz) with
custom preset that require more than ~7000 taps filter (which is
overkill).
- Add knobs through FEEDER_RATE_PRESETS to set dynamic range of filter
coefficients/accumulator and prefered polynomial interpolator:
COEFFICIENT_BIT:X
(where 1 <= X <= 30, default: 30)
ACCUMULATOR_BIT:X
(where 32 <= X <=64, default: 58)
INTERPOLATOR:I
(where I = ZOH, LINEAR, QUADRATIC, HERMITE, BSPLINE,
OPT32X, OPT16X, OPT8X, OPT4X, OPT2X)
Approved by: re (kib)
o add a new facility for components to register send+recv handlers
o ieee80211_send_action and ieee80211_recv_action now use the registered
handlers to dispatch operations
o rev ieee80211_send_action api to enable passing arbitrary data
o rev ieee80211_recv_action api to pass the 802.11 frame header as it may
be difficult to locate
o update existing IEEE80211_ACTION_CAT_BA and IEEE80211_ACTION_CAT_HT handling
o update mwl for api rev
Reviewed by: rpaulo
Approved by: re (kensmith)
o add to platforms where it was missing (arm, i386, powerpc, sparc64, sun4v)
o define as "1" on amd64 and i386 where there is no restriction
o make the type returned consistent with ALIGN
o remove _ALIGNED_POINTER
o make associated comments consistent
Reviewed by: bde, imp, marcel
Approved by: re (kensmith)
charge the objects created by vm_fault_copy_entry. The object charge
was set, but reserve not incremented.
Reported by: Greg Rivers <gcr+freebsd-current tharned org>
Reviewed by: alc (previous version)
Approved by: re (kensmith)
- sysctl dev.acpi_hp.0.verbose to toggle debug output
- A modification so this can deal with different array lengths
when reading the CMI BIOS - now it works ok on HP Compaq nx7300
as well.
- Change behaviour to query only max_instance-1 CMI BIOS instances,
because all HPs seen so far are broken in that respect
(or there is a fundamental misunderstanding on my side, possible
as well). This way a disturbing ACPI Error Field exceeds Buffer
message is avoided.
- New bit to set on dev.acpi_hp.0.cmi_detail (0x8) to
also query the highest guid instance of CMI bios
acpi_hp.4:
- Document dev.acpi_hp.0.verbose sysctl in man page
- Document new bit for dev.acpi_hp.0.cmi_detail
- Add a section to manpage about hardware that has been reported
to work ok
Submitted by: Michael Gmelin <freebsdusb at bindone.de>
Approved by: re (kib)
MFC after: 2 weeks
display '+' on them. Taken from kern/125613, with cosmetic
changes.
PR: kern/125613
Submitted by: Jaakko Heinonen <jh at saunalahti dot fi>
Approved by: re (kib)
More applications (including Firefox) seem to depend on this nowadays,
so not having this enabled by default is a bad idea.
Proposed by: miwi
Patch by: Florian Smeets <flo kasimir com>
Approved by: re (kib)
around the sequence that drop vnode lock and then busies the mount point.
Not having vlocked node or direct reference to the mp allows for the
forced unmount to proceed, making mp unmounted or reused.
Tested by: pho
Reviewed by: jeff
Approved by: re (kensmith)
MFC after: 2 weeks
system calls:
- Centralize generation of argument tokens for VM addresses in a macro,
ADDR_TOKEN(), and properly encode 64-bit addresses in 64-bit arguments.
- Fix up argument numbers across a large number of syscalls so that they
match the numeric argument into the system call.
- Don't audit the address argument to ioctl(2) or ptrace(2), but do keep
generating tokens for mmap(2), minherit(2), since they relate to passing
object access across execve(2).
Approved by: re (audit argument blanket)
Obtained from: TrustedBSD Project
MFC after: 1 week
using the size of the descriptor array.
- A lock is not needed to fetch fd_lastfile. The results are stale the
instant it is dropped.
- Use a private mutex pool for select since the pool mutex is not used
as a leaf.
- Fetch the si_mtx pointer first before resorting to hashing to compute
the mutex address.
Reviewed by: McKusick
Approved by: re (kib)
with I/O requests in flight on kernels compiled with "options INVARIANTS".
Also, make it obvious it's not right to call g_valid_obj() (and macros
using it, e.g. G_VALID_CONSUMER()) without topology lock held.
Approved by: re (kib)
Reported by: pho
DPCPU area was not properly mapped into kernel VA space, which caused page
fault on the first DPCPU access. This patch fixes the problem by mapping DPCPU
area into kernel VA space.
Submitted by: Michal Hajduk, Piotr Ziecik
Reviewed by: cognet, stas
Approved by: re (kib)
Obtained from: Semihalf
- For x86, change the interrupt source method to assign an interrupt source
to a specific CPU to return an error value instead of void, thus allowing
it to fail.
- If moving an interrupt to a CPU fails due to a lack of IDT vectors in the
destination CPU, fail the request with ENOSPC rather than panicing.
- For MSI interrupts on x86 (but not MSI-X), only allow cpuset to be used
on the first interrupt in a group. Moving the first interrupt in a group
moves the entire group.
- Use the icu_lock to protect intr_next_cpu() on x86 instead of the
intr_table_lock to fix a LOR introduced in the last set of MSI changes.
- Add a new privilege PRIV_SCHED_CPUSET_INTR for using cpuset with
interrupts. Previously, binding an interrupt to a CPU only performed a
privilege check if the interrupt had an interrupt thread. Interrupts
without a thread could be bound by non-root users as a result.
- If an interrupt event's assign_cpu method fails, then restore the original
cpuset mask for the associated interrupt thread.
Approved by: re (kib)
rather than as paths, which would lead to them being treated as relative
pathnames and hence confusingly converted into absolute pathnames.
Capture flags to unmount(2) via an argument token.
Approved by: re (audit argument blanket)
MFC after: 3 days
call could get hung sleeping on "gsssta" if the credentials for a user
that had been accessing the mount point have expired. This happened
because rpc_gss_destroy_context() would end up calling itself when the
"destroy context" RPC was attempted, trying to refresh the credentials.
This patch just checks for this case in rpc_gss_refresh() and returns
without attempting the refresh, which avoids the recursive call to
rpc_gss_destroy_context() and the subsequent hang.
Reviewed by: dfr
Approved by: re (Ken Smith), kib (mentor)
This is normally done by a loop in clnt_dg_close(), but requests that aren't
in the pending queue at the time of closing, don't get set. This avoids a
panic in xdrmbuf_create() when it is called with a NULL cr_mrep if
cr_error doesn't get set to ESHUTDOWN while closing.
Reviewed by: dfr
Approved by: re (Ken Smith), kib (mentor)
