nwhitehorn [Sat, 5 Jun 2010 16:25:25 +0000 (16:25 +0000)]
Partially revert r208162 while waiting for review on a more comprehensive
fix. On Apple OpenPICs, the low/high bit of the interrupt sense is only
respected for interrupt 0. We currently erroneously program all OpenPIC
interrupts level high instead of level low by default, which only matters
for some G5 systems where the SATA controllers use IRQ 0.
This change is a quick fix that will be reverted once the effect of
changing the default interrupt sense on embedded systems is known.
nwhitehorn [Sat, 5 Jun 2010 16:21:55 +0000 (16:21 +0000)]
Make sure that interrupt sense settings set after interrupts are enabled
are respected. This fixes loading the Apple onboard audio driver
(snd_ai2s) as a module after boot, which would previously cause a panic.
kib [Sat, 5 Jun 2010 16:00:53 +0000 (16:00 +0000)]
Use the fpu_kern_enter() interface to properly separate usermode FPU
context from in-kernel execution of padlock instructions and to handle
spurious FPUDNA exceptions that sometime are raised when doing padlock
calculations.
kib [Sat, 5 Jun 2010 15:59:59 +0000 (15:59 +0000)]
Introduce the x86 kernel interfaces to allow kernel code to use
FPU/SSE hardware. Caller should provide a save area that is chained
into the stack of the areas; pcb save_area for usermode FPU state is
on top. The pcb now contains a pointer to the current FPU saved area,
used during FPUDNA handling and context switches. There is also a
facility to allow the kernel thread to use pcb save_area.
Change the dreaded warnings "npxdna in kernel mode!" into the panics
when FPU usage is not registered.
trasz [Sat, 5 Jun 2010 08:50:39 +0000 (08:50 +0000)]
Don't try to copy a socket after "xxx is a socket (not copied)." message.
Previously, it would either try to copy it anyway and fail (without -R),
or create fifo instead of the socket (with -R).
Found with: Coverity Prevent
CID: 5623
MFC after: 2 weeks
mjacob [Sat, 5 Jun 2010 00:55:21 +0000 (00:55 +0000)]
I was getting panics in sleepq_add for the second sleep in isp_kthread.
I don't know why- but it occurred to me in looking at the second sleep
is that all I want is a pause- not an actual sleep. So do that instead.
cperciva [Fri, 4 Jun 2010 14:38:24 +0000 (14:38 +0000)]
Declare ip6 as (struct in6_addr *) instead of (struct in_addr *). This is
a harmless bug since we never actually use ip6 as anything other than an
opaque pointer.
Found with: Coverty Prevent(tm)
CID: 4319
MFC after: 1 month
jchandra [Fri, 4 Jun 2010 06:35:36 +0000 (06:35 +0000)]
Make vm_contig_grow_cache() extern, and use it when vm_phys_alloc_contig()
fails to allocate MIPS page table pages. The current usage of VM_WAIT in
case of vm_phys_alloc_contig() failure is not correct, because:
"There is no guarantee that any of the available free (or cached) pages
after the VM_WAIT will fall within the range of suitable physical
addresses. Every time this function sleeps and a single page is freed
(or cached) by someone else, this function will be reawakened. With
a little bad luck, you could spin indefinitely."
We also add low and high parameters to vm_contig_grow_cache() and
vm_contig_launder() so that we restrict vm_contig_launder() to the range
of pages we are interested in.
trasz [Thu, 3 Jun 2010 14:29:17 +0000 (14:29 +0000)]
_posix1e_acl_sort() never returns anything other than 0; change its
return type to void and update callers. This simplifies code and
fixes one place where the returned value was not actually checked.
marius [Thu, 3 Jun 2010 13:04:56 +0000 (13:04 +0000)]
- Mention that VTOC8 labels are found in Fujitsu SPARC64 machines as well.
- Add information regarding VTOC8 bootrstrap code and how it's handled with
r208777 in place.
- Document the mapping of partition types to VTOC8 tags.
- Add examples for VTOC8 to the respective section.
- Eliminated hard sentence breaks.
Reviewed by: marcel (slightly buggy version)
MFC after: 3 days
marius [Thu, 3 Jun 2010 13:01:55 +0000 (13:01 +0000)]
- In gpart_bootfile_read() fix an off-by-one error preventing the bootstrap
file to be of maximum size.
- Add special handling required for SMI/VTOC8 disklabel partcode, i.e. avoid
overwriting the label when writing the bootstrap code to the partition
starting at 0 and install it to all partitions when the -i option is omitted
just like geom_sunlabel(4) and sunlabel(8) do by default.
- Add missing prototypes.
- Add const where applicable.
kib [Thu, 3 Jun 2010 10:24:53 +0000 (10:24 +0000)]
Extend the scope of the lock on the quota file vnode in quotaon() to
cover the initial read by dqopen(). Assert that vnode is locked in
dqopen(). Remove VFS_LOCK_GIANT() from dqopen(), since quotaon() keeps
Giant locked if needed around the call.
kib [Thu, 3 Jun 2010 10:20:08 +0000 (10:20 +0000)]
Sometimes vnodes share the lock despite being different vnodes on
different mount points, e.g. the nullfs vnode and the covered vnode
from the lower filesystem. In this case, existing assertion in
vop_rename_pre() may be triggered.
Check for vnode locks equiality instead of the vnodes itself to
not trip over the situation.
alc [Thu, 3 Jun 2010 03:55:22 +0000 (03:55 +0000)]
In the unlikely event that pmap_ts_referenced() demoted five superpage
mappings to the same underlying physical page, the calling thread would be
left forever pinned to the same processor.
jmallett [Wed, 2 Jun 2010 21:15:00 +0000 (21:15 +0000)]
Fix build for O32 systems without a TARGET_CPUTYPE defined. We must default to
MIPS-III because FreeBSD relies on a number of MIPS-III features; the ABI
default would be MIPS-I which we don't intend to support. Our old default
before I switched to using the ABI default was MIPS32.
raj [Wed, 2 Jun 2010 17:17:45 +0000 (17:17 +0000)]
Import the common Flattened Device Tree infrastructure.
o fdtbus(4) - the main abstract bus driver for all FDT-compliant systems. This
is a direct replacement for the many incompatible bus drivers grouping
integrated peripherals on embedded platforms (like obio(4), ocpbus(4) etc.)
o simplebus(4) - bus driver representing ePAPR style 'simple-bus' node, which
is an umbrella device for most of the integrated peripherals on a typical
system-on-chip device.
o Other components (common routines library, PCI node processing helper
functions)
Reviewed by: imp
Sponsored by: The FreeBSD Foundation
alc [Wed, 2 Jun 2010 15:46:37 +0000 (15:46 +0000)]
Minimize the use of the page queues lock for synchronizing access to the
page's dirty field. With the exception of one case, access to this field
is now synchronized by the object lock.
jhb [Wed, 2 Jun 2010 15:09:36 +0000 (15:09 +0000)]
MFamd64: Add a new macro PCPU_XEN_FIELDS to hold XEN-specific per-CPU
fields that is always included in PCPU_MD_FIELDS. The macro is empty for
non-XEN kernels. This avoids duplicating non-XEN per-CPU fields in two
places. While here, remove several unused fields from the XEN-specific
structure.
jmallett [Wed, 2 Jun 2010 11:06:03 +0000 (11:06 +0000)]
Add/improve mips64r2, Octeon, n32 and n64 support in the toolchain.
o) Add TARGET_ABI to the MIPS toolchain build process. This sets the default
ABI to one of o32, n32 or n64. If it is not set, o32 is assumed as that is
the current default.
o) Set the default GCC cpu type to any specified TARGET_CPUTYPE. This is
necessary to have a working "cc" if e.g. mips64 is specified, as binutils
will refuse to link objects using different ISAs in some cases.
o) Add support for n32 and n64 ABIs to binutils and GCC.
o) Add additional required libgcc2 stubs for n32 and n64.
o) Add support for the "mips64r2" architecture to GCC. Add the "octeon"
o) When static linking, wrap default libraries in --start-group and
--end-group. This is required for static linking to work on n64 with the
interdependencies between libraries there. This is what other OSes that
support n64 seem to do, as well.
o) Fix our GCC spec to define __mips64 for 64-bit targets, not __mips64__, the
former being what libgcc, etc., check and the latter seemingly being a
misspelling of a hand merge from a Linux spec.
o) When no TARGET_CPUTYPE is specified at build time, make GCC take the default
ISA from the ABI. Our old defaults were too liberal and assumed that 64-bit
ABIs should default to the MIPS64 ISA and that 32-bit ABIs should default to
the MIPS32 ISA, when we are supporting or will support some systems based on
earlier 32-bit and 64-bit ISAs, most notably MIPS-III.
o) Merge a new opcode file (and support code) from a later version of binutils
and add flags and code necessary to support Octeon-specific instructions.
This should also make merging opcodes for other modern architectures easier.
kib [Wed, 2 Jun 2010 09:59:05 +0000 (09:59 +0000)]
Add a facility to dynamically adjust or unconfigure p1003_1b mib.
Use it to allow to tune sem_nsem_max at runtime, only when sem.ko
module is present in kernel.
Requested and tested by: amdmi3
Reviewed by: jhb
MFC after: 3 days
alc [Tue, 1 Jun 2010 19:56:02 +0000 (19:56 +0000)]
In the case that mmu_booke_enter_locked() is changing the attributes of a
mapping but not changing the physical page being mapped, the wrong flags
were being inspected in order to determine whether or not to flush the
instruction cache. The effect of looking at the wrong flags was that the
instruction cache was never being flushed.
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