Because POSIX does not allow EINTR to be returned from sigwait(),
add a wrapper for it in libc and rework the code in libthr, the
system call still can return EINTR, we keep this feature.
When using pf routing options, properly handle IP fragmentation
for interfaces with TSO enabled, otherwise one would see an extra
ICMP unreach, frag needed pre matching packet on lo0.
This syncs pf code to ip_output.c r162084.
PR: kern/144311
Submitted by: yongari via mlaier
Reviewed by: eri
Tested by: kib
MFC after: 8 days
Allow to boot from a pool within which replacing is in progress.
Before the change it wasn't possible and the following error was printed:
ZFS: can only boot from disk, mirror or raidz vdevs
Now if the original vdev (the one we are replacing) is still present we will
read from it, but if it is not present we won't read from the new vdev, as it
might not have enough valid data yet.
libelf is overly strict about the type and alignment of Elf_Data
objects inside one ELF section, which prevents the creation of a ELF
section with mixed data types. For example, gcc LTO use libelf to
create a .gnu_lto_XXX section that contains integers and a string
table, which doesn't work with our libelf implementation.
The changes made in this commit include:
* Allow Elf_Data type to be different than section type.
* Relax Elf_Data alignment check.
* Align each Elf_Data by their own alignment instead of section alignment.
Add a drain function for struct sysctl_req, and use it for a variety of
handlers, some of which had to do awkward things to get a large enough
FIXEDLEN buffer.
Note that some sysctl handlers were explicitly outputting a trailing NUL
byte. This behaviour was preserved, though it should not be necessary.
- Use 'sta' to hold the PCIR_STATUS register value instead of 'cmd' when
walking the capability list.
- Use constants for PCI header types instead of magic numbers.
- Rename the constant for the Master Data Parity Error flag in the
PCI status register to map its current name.
- Use PCIM_* rather than PCIR_* for constants for fields in various AER
registers. I got about half of them right in the previous commit.
Add drain functionality to sbufs. The drain is a function that is
called when the sbuf internal buffer is filled. For kernel sbufs with a
drain, the internal buffer will never be expanded. For userland sbufs
with a drain, the internal buffer may still be expanded by
sbuf_[v]printf(3).
Sbufs now have three basic uses:
1) static string manipulation. Overflow is marked.
2) dynamic string manipulation. Overflow triggers string growth.
3) drained string manipulation. Overflow triggers draining.
In all cases the manipulation is 'safe' in that overflow is detected and
managed.
- Provide 64 bit implementations for some macros. On n64 and n32,
don't split 64 bit values.
- No need for 32 bit ops for control registers.
- Fix few bugs (write control reg, write_c0_register64).
- Re-write EIRR/EIMR/CPUID operations using read_c0_registerXX, no
need of inline assembly.
- rename control reg access functions to avoid phnx, update callers.
- stlye/whitespace fixes.
Refactor sbuf code so that most uses of sbuf_extend() are in a new
sbuf_put_byte(). This makes it easier to add drain functionality when a
buffer would overflow as there are fewer code points.
Fix the experimental NFS client so that it doesn't panic when
NFSv2,3 byte range locking is attempted. A fix that allows the
nlm_advlock() to work with both clients is in progress, but
may take a while. As such, I am doing this commit so that
the kernel doesn't panic in the meantime.
On architectures with non-tree-based page tables like PowerPC, every page
in a range must be checked when calling pmap_remove(). Calling
pmap_remove() from vm_pageout_map_deactivate_pages() with the entire range
of the map could result in attempting to demap an extraordinary number
of pages (> 10^15), so iterate through each map entry and unmap each of
them individually.
Fix a problem where device detection would work unreliably on Serverworks
K2 SATA controllers. The chip's status register must be read first, and
as a long, for other registers to be correctly updated after a command, and
this includes the command sequence in device detection as well as the
previously handled case after interrupts. While here, clean up some
previous hacks related to this controller.
Reported by: many
Reviewed by: mav
MFC after: 3 weeks
Don't clobber an existing target object file when doing the DTrace
linking process. This is needed because we change the source object
files and the second this dtrace -G is run, no probes will be found.
This hack allows us to build postgres with DTrace probes enabled. I'll
try to find a way to fix this without needing this hack.
Doing first mount and updating mount points are both handled by the same
syscall and the same function, but are very different and share almost no code.
To make it easier to read and analyze, split vfs_domount() into
vfs_domount_first() and vfs_domount_update().
- Correct error paths. The system will be useless on devfs_fixup() failure, so
why bother? Maybe for the same reason why a dead body is washed and dressed
in a nice suit before it is put into a coffin? Maybe system's last will is to
panic without any locks held?
Make sure to only pickup hid_input items when parsing input reports.
As it turns out, libusbhid(3) also picks up hic_collection items even
though we explicitly requested hid_input items only.
Tested by: Buganini < buganini at gmail dot com >
MFC after: 1 week
Check TARGET_ARCH as well as TARGET to determine if we are doing a cross
build. This is necessary to be able to cross-build 32-bit PowerPC from
a 64-bit PowerPC host.
Add custom kernel configuration and device tree source files for
Seagate FreeAgent DockStar(tm) device. It seems to be a dumb down
version of Marvell SheevaPlug. Device tree source file could use
more tweaking, but at least it wll network boot and run FreeBSD/arm.
- Add register definitions related to extended capability IDs in
PCI-express. I used PCIZ_* for ID constants (plain capability IDs use
PCIY_*).
- Add register definitions for the Advanced Error Reporting, Virtual
Channels, and Device Serial Number extended capabilities.
- Teach pciconf -c to list extended as well as plain capabilities. Adds
more detailed parsing for AER, VC, and device serial numbers.
- Updates for the message ring clean up in r212321.
- Instead of dropping Tx packet on credit fail, retry send until it
succeeds.
- Fix freeing mbufs in case of P2P descriptors:
We cannot free the mbuf when the P2P descriptor freeback is received. The
mbuf may be still in use by the GMAC, since the P2P freeback indicates that
it read the P2D descriptors in the P2P message.
Now we free just the P2P descriptor when the P2P freeback message is
received. Another freeback P2D message has been added to the end of
the packet descriptors, the mbuf will be freed only when we received
this.
The P2P descriptor issue was reported by srgorti at netlogicmicro dot com.
During SMP startup there is time window, when SMP started, but interrupts
are still bound to BSP. It confuses timer management logic in per-CPU mode
and may cause timer not being reloaded. Check such cases on interrupt
arival and reload timer to give system some more time to manage proper
binding.
Fix a typo in the original import of this code from NetBSD that caused the
wrong element of the VSID bitmap array to be examined after a collision,
leading to reallocation of in-use VSIDs under some circumstances, with
attendant memory corruption. Also add an assert to check for this kind of
problem in the future.
Fix message ring send path:
- define msgrng_access_enable() which disables local interrupts
and enables message ring access. Also define msgrng_restore() which
restores interrupts
- remove all other msgrng enable/disable macros, no need of critical_enter
and other locking here.
- message_send() fixup: re-read status until pending bit clears
- message_send_retry() fixup: retry only few times with interrupts disabled
- Fix up message_send/message_send_retry callers - call
msgrng_access_enable() and msgrng_restore() correctly so that interrupts
are not disabled for long.
- removed unused and obsolete code from sys/mips/rmi/msgring.h
- some style fixes - more later
rge.c (XLR GMAC driver):
- updated for the message ring changes
- remove unused message_send_block()
- retry on credit failure, this is not a permanent failure when credits
are configured correctly. Add panic if credits are not available to
send for a long time.
Fix an error made in r209975 related to context ID allocation for 64-bit
PowerPC CPUs running a 32-bit kernel. This bug could cause in-use VSIDs
to be allocated again to another process, causing memory space overlaps
and corruption.
Make sure to create DMA'able memory for statistics block. This was
missed in r212061 and it caused crashes for 570x controllers as
controller DMAed statistics to physical address 0.
Store the full timestamp when caching timestamps of files and
directories for purposes of validating name cache entries. This
closes races where two updates to a file or directory within the same
second could result in stale entries in the name cache. While here,
remove the 'n_expiry' field as it is no longer used.
Each processor socket in a QPI system has a special PCI bus for the
"uncore" devices (such as the memory controller) in that socket. Stop
hardcoding support for two busses, but instead start probing buses at
domain 0, bus 255 and walk down until a bus probe fails. Also, do not probe
a bus if it has already been enumerated elsewhere (e.g. if ACPI ever
enumerates these buses in the future).
GCC defines built-ins for atomic instructions found on i486 and higher.
Because FreeBSD no longer supports the 80386 cpu all code targeting
FreeBSD/i386 necessarily runs on i486 or higher so the compiler
built-ins can be used by default inside libstdc++ and in C++ headers.
This allows newly compiled C++ code to inline some atomic operations.
Old binaries continue to use libstdc++ functions.
Fix interrupt routing so that the irq returned is correct for XLR and
XLS. This also updates the MSI hack we had earlier - we still don't
really support MSI, but we support some drivers that use MSI, by providing
support for allocating one MSI per pci link - this MSI is directly
mapped to the link IRQ.
In munmap() downgrade the vm_map_lock to a read lock before taking a read
lock on the pmc-sx lock. This prevents a deadlock with
pmc_log_process_mappings, which has an exclusive lock on pmc-sx and tries
to get a read lock on a vm_map. Downgrading the vm_map_lock in munmap
allows pmc_log_process_mappings to continue, preventing the deadlock.
Without this change I could cause a deadlock on a multicore 8.1-RELEASE
system by having one thread constantly mmap'ing and then munmap'ing a
PROT_EXEC mapping in a loop while I repeatedly invoked and stopped pmcstat
in system-wide sampling mode.
Adds a CAVEATS section to mention DMA issues that currently only
a solution is using PIO mode. As fas as I know all open source based
broadcom drivers for specially LP PHY has this issue because it's
a reverse engineered driver from wl(4).
Adds bwi(4) at SEE ALSO section because some old devices aren't
supported by the bwn(4) firmware that as fas as I know the vendor
dropped its support. Bumps date also.
will [Mon, 6 Sep 2010 21:06:06 +0000 (21:06 +0000)]
Fix CARP in backup mode by properly registering its hooks for INET and INET6
using ipproto_{un,}register() and the newly created ip6proto_{un,}register()
so that it can again receive IPPROTO_CARP packets allowing its state machine
to work.
will [Mon, 6 Sep 2010 21:03:30 +0000 (21:03 +0000)]
Fix static kernel builds with carp(4) by changing its SYSINIT order so that
it is initialized after basic protocol initialization, which allows it to
register via pf_proto_register().
brian [Mon, 6 Sep 2010 09:59:10 +0000 (09:59 +0000)]
Document dhclient-enter-hooks and dhclient-exit-hooks and mention
how to configure dhclient to clear the interface of IP numbers prior
to configuring it.
- add identify method to create driver's own device_t
- successfully probe only driver's own device_t instead of any device_t
- (ab)use device order to hopefully be probed/attached after acpi_wmi
XLR/XLS hardware interrupts should be programmed level triggered at the
PIC. This should fix the interrupt releated issues seen after the
interrupt handling re-write for SMP.
Fix off-by-one error in function _thr_sigact_unload, also disable the
function, it seems some gnome application tends to crash if we
unregister sigaction automatically.
Several improvements to HPET driver:
- Add special check for case when time expires before being programmed.
This fixes interrupt loss and respectively timer death on attempt to
program very short interval. Increase minimal supported period to more
realistic value.
- Add support for hint.hpet.X.allowed_irqs tunable, allowing manually
specify which interrupts driver allowed to use. Unluckily, many BIOSes
program wrong allowed interrupts mask, so driver tries to stay on safe
side by not using unshareable ISA IRQs. This option gives control over
this limitation, allowing more per-CPU timers to be provided, when FSB
interrupts are not supported. Value of this tunable is bitmask.
- Do not use regular interrupts on virtual machines. QEMU and VirtualBox
do not support them properly, that may cause problems. Stay safe by default.
Same time both QEMU and VirtualBox work fine in legacy_route mode.
VirtualBox also works fine if manually specify allowed ISA IRQs with above.
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