vm_map_pmap_enter() unless the caller is madvise(MADV_WILLNEED). With
the exception of calls to vm_map_pmap_enter() from
madvise(MADV_WILLNEED), vm_fault_prefault() and vm_map_pmap_enter()
are both used to create speculative mappings. Thus, always
reactivating cached pages is a mistake. In principle, cached pages
should only be reactivated by an actual access. Otherwise, the
following misbehavior can occur. On a hard fault for a text page the
clustering algorithm fetches not only the required page but also
several of the adjacent pages. Now, suppose that one or more of the
adjacent pages are never accessed. Ultimately, these unused pages
become cached pages through the efforts of the page daemon. However,
the next activation of the executable reactivates and maps these
unused pages. Consequently, they are never replaced. In effect, they
become pinned in memory.
handling is that fd = open(foo) is -1. This bug is harmless since
close(-1) just returns an error (which the code ignores).
Found by: Coverity Prevent(tm)
CID: 1503 (in userland test run)
same way it was enabled for Linux binares in linuxulator.
This allows binaries built with -pie. Many ports auto-detect -fPIE support
in GCC 4.2 and build binaries FreeBSD was unable to run.
Deal with IPv6 routing headers (see FreeBSD-SA-07:03.ipv6 for background)
Block IPv6 packets with routing headers by default, unless 'allow-opts'
is specified. Block RH0 unconditionally. Deal with ip6_plen 0.
MFC after: 1 week
Discussed with: mlaier
- Update to the latest (1.4.18) f/w. This f/w introduces a new
receive mode which allows us to use FreeBSD's physically discontinuous
MJUM9BYTES clusters.
- Switch the driver from chaining MJUMPAGESIZE clusters to using
MJUM9BYTES clusters to avoid mbuf chaining overheads. Due to this
change, people running obsolete f/w images will be limited to an MTU of
PAGE_SIZE - 16.
- Add (disabled by default) support for Large Receive Offload.
Sponsored by: Myricom, Inc.
field is const, and then employ __DECONST before getting into the kvm
code. This eliminates a gcc 4.2 warning about losing constification.
__DECONST advice from: sam
that the build failure was caused by a computer/sources date/time
mismatch that caused GCC tools to be mistakenly rebuilt again at
an inappropriate time during buildworld, re-linking them against
new libraries instead of host's installed libraries and thus making
them not runnable by the host. Normally they are only built in
the early stage of buildworld (build-tools) that links them against
shared libraries of the host, but if either the system clock or
modification date/time on source files is set incorrectly, make(1)
can be foolished into thinking that tools are stale and will rebuild
them again, now in the "target" environment which is not suitable
for building helper apps that are to be run during buildworld.
OK'ed by: kan
usage to an equivalent csh(1) usage as tr(1) stays in /usr/bin and
/etc/rc.d/hostid has just the root filesystem (and this way mainly the
tools in /bin) available.
I've chosen csh(1) here as the string manipulation tools available in
/bin is extremely limited and the (only) alternative ed(1) usage would
have been a lot more complicated or even might require a temporary file.
and ISO/IEC-9834-8:2005 is with LOWER-CASE hexadecimal characters only,
so translate the (usually upper-case and this way not conforming)
representation of the BIOS UUID when reading it. Also be more strict
about the valid characters in the textual representation by checking for
just the hexadecimal characters.
processor is to jump to recovery code. This branching behaviour
may not be implemented by the processor and a Speculative Operation
fault is raised. The OS is responsible to emulate the branch.
Implement this, because GCC 4.2 uses advanced loads regularly.
against NULL when it is first allocated) and pointless (we've already
dereferenced the pointer several times).
Found by: Coverity Prevent(tm)
CID: 3204
going to overwrite it with a new value a few lines later.
Visual inspection of the surrounding code indicates that the code does
what it's supposed to do; i.e., the pointless code wasn't supposed to
be doing something other than what it was doing.
CID: 3323
Found by: Coverity Prevent(tm)
Timezone data changes in the following locations:
Antarctica
Bahamas
Chile (past timestamps only)
Cuba
Eritrea (Africa/Asmara renamed to Africa/Asmera)
Haiti
Honduras
Indonesia (past timestamps only)
Mongolia
New Zealand (future timestamps only)
Nunavut
Pulaski County, Indiana
Syria
Turkey
Turks & Caicos
Western Australia
Also: some city coordinates corrected.
PR: conf/109418
scheduler lock is not involved. sched_lock still protects the sched_clock
call. Another patch will remedy this.
Contributed by: Attilio Rao <attilio@FreeBSD.org>
Tested by: kris, jeff
referenced outside of mp_machdep.c
- Replace a magic 14 with the newly added IDC_ITID_SHIFT macro.
- Remove the global mp_boot_mid variable as it's not really necessary
and just replacing it with PCPU_GET(mid) doesn't have any impact on
performance once booted.
- Replace PCPU_GET(cpuid) with the curcpu shortcut.
- Replace hardcoded function names in panic strings etc with __func__
so they don't need to be updated when renaming the function.
- Use register_t instead of u_long for variables used to hold the
return value of intr_disable() so we don't need to apply any
knowledge about the actual width of that value here.
- Improve the wording of some comments.
- Fix several style(9) bugs.
