want to adjust this code to just assume that all CPUs >= Esther should
be checked for the extended cpuid flags register.
MFC after: 3 days
PR: i386/119491
The code seems pretty MPSAFE and Giant is held over kproc_exit() which
at lowel calls exit1(). exit1() requires Giant to be unowned so this
opens a window for races.
Reported by: Bryan Venteicher <bryanv at daemoninthecloset dot org>
Tested by: Bryan Venteicher <bryanv at daemoninthecloset dot org>
always curthread.
As KPI gets broken by this patch, manpages and __FreeBSD_version will be
updated by further commits.
Tested by: Andrea Barberio <insomniac at slackware dot it>
source upgrades by falling back to GNU ar(1) as necessary. Option
WITH_BSDAR is gone. Option _WITH_GNUAR to aid in upgrades is *not*
supposed to be set by the user.
Stop bootstrapping BSD ar(1) on the next __FreeBSD_version bump, as
there are no known bugs in it. Bump __FreeBSD_version to anticipate
this and to flag the switch to BSD ar(1), should it be needed for
something.
Input from: obrien, des, kaiw
first before they can be set to Explorer mode.
PR: kern/118578
Submitted by: Andriy Gapon <avg@icyb.net.ua> (I added some comments)
Reviewed by: philip
MFC after: 1 month
variations (e500 currently), this provides a gcc-level FPU emulation and is an
alternative approach to the recently introduced kernel-level emulation
(FPU_EMU).
Approved by: cognet (mentor)
MFp4: e500
only anonymous default (OBJT_DEFAULT) and swap (OBJT_SWAP) objects should
ever have OBJ_ONEMAPPING set. However, vm_object_deallocate() was
setting it on device (OBJT_DEVICE) objects. As a result,
vm_object_page_remove() could be called on a device object and if that
occurred pmap_remove_all() would be called on the device object's pages.
However, a device object's pages are fictitious, and fictitious pages do
not have an initialized pv list (struct md_page).
To date, fictitious pages have been allocated from zeroed memory,
effectively hiding this problem. Now, however, the conversion of rotting
diagnostics to invariants in the amd64 and i386 pmaps has revealed the
problem. Specifically, assertion failures have occurred during the
initialization phase of the X server on some hardware.
MFC after: 1 week
Discussed with: Kostik Belousov
Reported by: Michiel Boland
namespace in order to handle lockmgr fields in a controlled way instead
than spreading all around bogus stubs:
- VN_LOCK_AREC() allows lock recursion for a specified vnode
- VN_LOCK_ASHARE() allows lock sharing for a specified vnode
In FFS land:
- BUF_AREC() allows lock recursion for a specified buffer lock
- BUF_NOREC() disallows recursion for a specified buffer lock
Side note: union_subr.c::unionfs_node_update() is the only other function
directly handling lockmgr fields. As this is not simple to fix, it has
been left behind as "sole" exception.
the same order that FreeBSD 6 and before did. Doug
White and the other bloodhounds at ISC discovered that
while FreeBSD 7's ordering of options was more efficient,
it caused some cable modem routers to ignore the
SYN-ACKs ordered in this fashion.
The placement of sackOK after the timestamp option seems
to be the critical difference:
FreeBSD 6:
<mss 1460,nop,wscale 1,nop,nop,timestamp 3512155768 0,sackOK,eol>
FreeBSD 7.0:
<mss 1460,nop,wscale 3,sackOK,timestamp 1370692577 0>
FreeBSD 7.0 + this change:
<mss 1460,nop,wscale 3,nop,nop,timestamp 7371813 0,sackOK,eol>
MFC after: 1 week
the provided trailers. This has been broken since revision 1.240.
Submitted by: Dan Nelson
PR: kern/120948
"sounds ok to me" from: phk
MFC after: 3 days
can run on processors that don't have a FPU. This is typically the
case for Book E processors. While a tuned system will probably want
to use soft-float (or use a processor that has a FPU if the usage is
FP intensive enough), allowing hard-float on FPU-less systems gives
great portability and flexibility.
Obtained from: NetBSD
o Disable interrupts while not running U-Boot code. We clobber
registers that the U-Boot interrupt handlers assume to be
fixed as per the U-Boot register usage. At this time this only
applies to r14. U-Boot uses r2 now for what they used r29 for.
After we restore r14 in preparation of doing the syscall, we
re-enable interrupts. When we return from the syscall, we
disable interrupts and restore the callee-saved r14.
(link) address and the physical (load) address. Ideally, the mapping
between link and load addresses should be abstracted by the copyin(),
copyout() and readin() functions, so that we don't have to add kluges
in __elfN(loadimage)(). Then, we could also have paged virtual memory
for the kernel. This can be important under EFI, where you need to
allocate physical memory form the firmware if you want to work in all
scenarios.
o Move the API prototypes to a separate header (glue.h)
o Allow the platform to hint libuboot about where to look
for the API signature. The uboot_address variable is
expected to be defined by the platform.
- add support for T3C
- add DDP support (zero-copy receive)
- fix TOE transmit of large requests
- fix shutdown so that sockets don't remain in CLOSING state indefinitely
- register listeners when an interface is brought up after tom is loaded
- fix setting of multicast filter
- enable link at device attach
- exit tick handler if shutdown is in progress
- add helper for logging TCB
- add sysctls for dumping transmit queues
- note that TOE wxill not be MFC'd until after 7.0 has been finalized
MFC after: 3 days
consists of the null-terminated name and the contents of any structure
you wish to record. A new ktrstruct() function constructs and emits a
KTR_STRUCT record. It is accompanied by convenience macros for struct
stat and struct sockaddr.
In kdump(1), KTR_STRUCT records are handled by a dispatcher function
that runs stringent sanity checks on its contents before handing it
over to individual decoding funtions for each type of structure.
Currently supported structures are struct stat and struct sockaddr for
the AF_INET, AF_INET6 and AF_UNIX families; support for AF_APPLETALK
and AF_IPX is present but disabled, as I am unable to test it properly.
Since 's' was already taken, the letter 't' is used by ktrace(1) to
enable KTR_STRUCT trace points, and in kdump(1) to enable their
decoding.
Derived from patches by Andrew Li <andrew2.li@citi.com>.
PR: kern/117836
MFC after: 3 weeks
