POSIX (susv3) requires this, but it is unclear what should be inherited,
duplicating whole 387 stack for new thread seems to be unnecessary and
dangerous. Revert to previous code, force a new thread to be started with
clean FP state.
USBD_FORCE_SHORT_XFER to ensure that we actually build and execute
a transfer. This means that the various alloc_sqtd_chain functions
will always construct a transfer, so it is safe to modify the
allocated descriptors on return. Previously there were cases where
a zero length transfer would cause a NULL dereference.
Reported by: bp
will allow the NFS server to call vfs_stdcheckexp() on the exported nullfs
filesystem, not the underlying filesystem being nullfs mounted.
If the lower filesystem was not NFS exported, then the NFS exported
null filesystem would not work.
Pointed out by: scottl
PR: kern/87906
MFC after: 1 week
- Reduce the number of RX and TX buffers bfe uses so that it does not use more
bounce buffers than busdma is willing to allow it to use
See if_bfe.c for comments on why this is now safe to do.
Also use BUS_DMA_ALLOCNOW to be on the safe side.
2. Look for the Descriptor Error, and Descriptor Protocol Error flags from
the card, and down the interface if we detect either.
#1 (along with fixes to busdma) makes sure that this card works in all
memory situations. Prior to this change, it was just luck that 512 count
RX/TX lists were properly aligned. Now we can use any size of RX/TX lists
and still have them properly aligned.
#2 ensures that we don't get into an endless interrupt storm if busdma fails
us. Descriptor Protocol Error would occur if we misaligned the TX/RX rings,
and Descriptor Error would occur if we tried to give the card descriptors
or rings with addresses > 1G. Trying to reinitialize the card isn't going
to fix these errors, hence we don't try.
Add a quick hack to ensure that bus_dmamem_alloc properly aligns
small allocations with large alignment requirements.
Add a panic to detect cases where we've still failed to properly align.
lookup, rename, strategy, islocked
The missing % sign meant that the lines were processed as plain
comments and the corresponding assertions were never generated.
the high 16 bits is non-zero, fxrstor instruction will generate GP fault,
resulting kernel crash, this bug can be triggered by setcontext and
ptrace(PT_SETXMMREGS).
host controllers to avoid the need to allocate any multi-page
physically contiguous memory blocks. This makes it possible to use
USB devices reliably on low-memory systems or when memory is too
fragmented for contiguous allocations to succeed.
The USB subsystem now uses bus_dmamap_load() directly on the buffers
supplied by USB peripheral drivers, so this also avoids having to
copy data back and forth before and after transfers. The ehci and
ohci controllers support scatter/gather as long as the buffer is
contiguous in the virtual address space. For uhci the hardware
cannot handle a physical address discontinuity within a USB packet,
so it is necessary to copy small memory fragments at times.
used once on a non-empty pattern space and then again on an empty
pattern space, the second usage restores the pattern space length to
the length that it had when the first "P" was used.
PR: bin/96052
Submitted by: Andrey Zholos <aaz@althenia.net>
MFC after: 7 days
specified size to be read in the more familiar units of kilobytes,
megabytes, gigabytes, terabytes and petabytes.
PR: bin/50988
Submitted by: Matthew Seaman <m.seaman@infracaninophile.co.uk>
MFC after: 7 days
lost one set to a peninsula power failure last night. After
this, I can see both submembers and the raid volumes again,
but speed negotiation is still broken.
Add a mpt_raid_free_mem function to centralize the resource
reclaim and fixed a small memory leak.
Remove restriction on number of targets for systems with IM enabled-
you can have setups that have both IM volumes as well as other devices.
Fix target id selection for passthru and nonpastrhu cases.
Move complete command dumpt to MPT_PRT_DEBUG1 level so that just
setting debug level gets mostly informative albeit less verbose
dumping.
but large parts are rewritten by matk and tanimura.
This is old code, it's not maintained since 2003. We also don't have a
maintainer for this! Yuriy Tsibizov took it and uses it in his emu10kx
driver. Since the emu10kx driver will enter the tree "soon" (some bugs
have to be fixed after Yuriy return from his holidays), I add it here
already.
This also contains some changes to emu10k1 and cmi, so if you're lucky,
you can now make some kind of use of midi with those soundcards.
To all those poor souls which don't have such a card: feel free to send
patches, we don't have a maintainer for this.
To those which miss a specific feature in the midi code: feel free to
submit patches, we don't have a maintainer for this.
Oh, did I already told that it would be nice if someone would take care
of it? Maintainer with midi equipment wanted! :-)
If you get LOR's, submit a PR and notify multimedia@ please. If you get
panics, submit a PR with a backtrace (compile the sound system into your
kernel instead of using modules in this case) and notify multimedia@
please.
Written by: matk, tanimura
Submitted by: "Yuriy Tsibizov" <Yuriy.Tsibizov@gfk.ru>
Based upon: code from NetBSD
but large parts are rewritten by matk and tanimura.
This is old code, it's not maintained since 2003. We also don't have a
maintainer for this! Yuriy Tsibizov took it and uses it in his emu10kx
driver. Since the emu10kx driver will enter the tree "soon" (some bugs
have to be fixed after Yuriy return from his holidays), I add it here
already.
This also contains some changes to emu10k1 and cmi, so if you're lucky,
you can now make some kind of use of midi with those soundcards.
To all those poor souls which don't have such a card: feel free to send
patches, we don't have a maintainer for this.
To those which miss a specific feature in the midi code: feel free to
submit patches, we don't have a maintainer for this.
Oh, did I already told that it would be nice if someone would take care
of it? Maintainer with midi equipment wanted! :-)
If you get LOR's, submit a PR and notify multimedia@ please. If you get
panics, submit a PR with a backtrace (compile the sound system into your
kernel instead of using modules in this case) and notify multimedia@
please.
Written by: matk, tanimura
Submitted by: "Yuriy Tsibizov" <Yuriy.Tsibizov@gfk.ru>
Based upon: code from NetBSD
so that both parent and child processes ignore this signal.
PR: bin/97768
Submitted by: Gea-Suan Lin <gslin at csie dot nctu dot edu dot tw>
MFC after: 3 days
the LIST checks). Races may lead to list corruption, which can be
difficult to unravel in a post-mortem analysis. These checks verify
that the prev and next pointers are consistent when inserting or
removing elements, thus catching any corruption earlier.
It uses doxygen to generate the API documentation. For each subsystem
a very small (about 20 lines with comments) subsystem specific Doxyfile
has to be written (have a look at the README for more). All common doxygen
options are specified in a separate file.
The framework is configured to not only generate the HTML version, but also
a PDF version (the paper size is hardcoded to DIN A4 currently and depending
on the subsystem you have to increase some limits in the latex configuration
of your system, the README tells more about this).
It also allows cross-references between the subsystems (it generates doxygen
tag files).
Currently the docs are generated in OBJDIR, but this may change after
coordination with doc@. The makefile is prepared to generate/move various
parts of the generated docs to different destinations.
TARGET_ARCH is respected and some env-vars are set for architecture specific
handling of the source (the README tells more).
Subsystems for which docs are generated:
- cam - crypto - dev_pci
- dev_sound - dev_usb - geom
- i4b - kern - libkern
- linux - net80211 - netgraph
- netinet - netinet6 - netipsec
- opencrypto - vm
Requested by: gnn
