Eliminate a lot of checkes to make sure requests are not cross-device
which is unnecessary with the new layout. We know a sequential request
cannot possibly be cross-device because there is a reserved page between
the devices.
Remove a couple of comments which no longer are relevant.
i/o ports by calling the implementation-detail level below inb() and
outb() instead of inb() and outb(). Unpessimizing the types is too
hard since they are mainly used in microcode.
no longer existing "fixit" crunched binary).
- Simplify the CRUNCH_TARGETS variable's initialization.
- Simplify the release.5 logic a bit by accounting for the fact
that release/*_crunch.conf files were removed two years ago.
TCB. We know that the thread pointer points to &tcb->tcb_tp, so all
we have to do is subtract offsetof(struct tcb, tcb_tp) from the
thread pointer to get to the TCB. Any reasonably smart compiler will
translate accesses to fields in the TCB as negative offsets from TP.
In _tcb_set() make sure the fake TCB gets a pointer to the current
KCB, just like any other TCB. This fixes a NULL-pointer dereference
in _thr_ref_add() when it tried to get the current KSE.
The original name was really a mistake since
/usr/local/etc/rc.d scripts can (and usually do) start
more than just daemons. Even the output in the script
uses 'local packages.' Also, the term 'local daemons' is
used by rc.d/local, which was etc/rc.local of rcOG fame.
No repo-copy because there isn't much history to save.
I will remove localdaemons shortly with all the other
files that don't belong in rc.d anymore.
Discussed with: dougb, freebsd-rc@yahoogroups.com
makecontext(). We only supply 3, not 4. This is mostly harmless,
except that on ia64 the garbage can include NaT bits, resulting
in NaT consumption faults.
that the TLS is 16-byte aligned, as well as guarantee that the thread
pointer is 16-byte aligned as it points to struct ia64_tp. Likewise,
struct tcb and struct ksd are also guaranteed to be 16-byte aligned
(if they weren't already).
archs that can (or are required to) have per-thread registers.
Tested on i386, amd64; marcel is testing on ia64 and will
have some follow-up commits.
Reviewed by: davidxu
completenss. The pessimization is tiny compared with i/o port slowness
except on very old machines, but code that used signed short types for
i/o ports was unpessimized long ago, and the macro that detected it
recently started working for u_short types too. Use of bus space
should have made this moot long ago.
Not tested at runtime by: bde
- Build SGL's for ATA_PASSTHROUGH commands
- Fallback to using the sgl_offset when the opcode is unknown for building
SGL's/
- Add ioctl calls for adding and removing units.
- Define previously undefined AEN's
- Allocate memory for the ioctl payload in multiples of 512bytes.
MFC after: 1 week
context functions. We don't need to enter the kernel anymore. The
contexts are compatible (ie a context created by getcontext() can
be restored by _ia64_restore_context()).
While here, make the use of THR_ALIGNBYTES and THR_ALIGN a no-op.
They are going to be removed anyway.
We write 1 for r8 in the context so that _ia64_restore_context()
will return with a non-zero value. _ia64_save_context() always
return 0.
o In _ia64_restore_context(), don't restore the thread pointer. It
is not normally part of the context. Also, restore the return
registers. We get called for contexts created by getcontext(),
which means we have to restore all the syscall return values.
need this for swapcontext(), KSE upcalls initiated from ast()
also need to save them so that we properly return the syscall
results after having had a context switch. Note that we don't
use r11 in the kernel. However, the runtime specification has
defined r8-r11 as return registers, so we put r11 in the context
as well. I think deischen@ was trying to tell me that we should
save the return registers before. I just wasn't ready for it :-)
o The EPC syscall code has 2 return registers and 2 frame markers
to save. The first (rp/pfs) belongs to the syscall stub itself.
The second (iip/cfm) belongs to the caller of the syscall stub.
We want to put the second in the context (note that iip and cfm
relate to interrupts. They are only being misused by the syscall
code, but are not part of a regular context).
This way, when the context is switched to again, we return to
the caller of setcontext(2) as one would expect.
o Deal with dirty registers on the kernel stack. The getcontext()
syscall will flush the RSE, so we don't expect any dirty registers
in that case. However, in thread_userret() we also need to save
the context in certain cases. When that happens, we are sure that
there are dirty registers on the kernel stack.
This implementation simply copies the registers, one at a time,
from the kernel stack to the user stack. NAT collections are not
dealt with. Hence we don't preserve NaT bits. A better solution
needs to be found at some later time.
We also don't deal with this in all cases in set_mcontext. No
temporay solution is implemented because it's not a showstopper.
The problem is that we need to ignore the dirty registers and we
automaticly do that for at most 62 registers. When there are more
than 62 dirty registers we have a memory "leak".
This commit is fundamental for KSE support.
multicast VIF tables.
This change is needed for consistency with the rest of the
netstat/mroute.c implementation, and because in some
cases "netstat -g" may fail to report the multicast forwarding
information (e.g., if we run a multicast router on PicoBSD).
* Remove "DVMRP" from the head comment of file netstat/mroute.c,
because the printed multicast-related statistics are not
DVMRP-specific anymore.
Submitted by: Pavlin Radoslavov <pavlin@icir.org>
sysctl:
- sysctlbyname("net.inet.ip.mfctable", ...)
- sysctlbyname("net.inet.ip.viftable", ...)
This change is needed so netstat can use sysctlbyname() to read
the data from those tables.
Otherwise, in some cases "netstat -g" may fail to report the
multicast forwarding information (e.g., if we run a multicast
router on PicoBSD).
* Bug fix: when sending IGMPMSG_WRONGVIF upcall to the multicast
routing daemon, set properly "im->im_vif" to the receiving
incoming interface of the packet that triggered that upcall
rather than to the expected incoming interface of that packet.
* Bug fix: add missing increment of counter "mrtstat.mrts_upcalls"
* Few formatting nits (e.g., replace extra spaces with TABs)
Submitted by: Pavlin Radoslavov <pavlin@icir.org>
code used to call rtrequest(RTM_DELETE, ...). This is a problem, because
the function that just has called us (route_output)
is not really happy with the route it just is creating beeing ripped out
from under it. Unfortunately we also cannot return an error from
ifa_rtrequest. Therefore mark the route just as RTF_REJECT.
control whether to accept RAs per-interface basis.
the new stuff ensures the backward compatibility;
- the kernel does not accept RAs on any interfaces by default.
- since the default value of the flag bit is on, the kernel accepts RAs
on all interfaces when net.inet6.ip6.accept_rtadv is 1.
Obtained from: KAME
MFC after: 1 week
The old way of just returning could result in a file system
extremely likely to panic the kernel. The warning printed
wouldn't help much since tools invoking newfs(8), e.g., mdmfs(8),
couldn't detect the error.
PR: bin/55078
MFC after: 1 week
preparation for supporting the OPENVCC and CLOSEVCC ioctls which
are needed for ng_atm. This required some re-organisation of the code
(mostly converting array indexes to pointers). This also gives us
an array of open vccs that will help in using the generic GETVCCS handler.
than i386 or AMD64, TP register points to thread mailbox, and they can not
atomically clear km_curthread in kse mailbox, in this case, thread retrieves
its thread pointer from TP register and sets flag TMF_NOUPCALL in its thread
mailbox to indicate a critical region.
