702818d2 jhibbits May 23, 2019, 3:47 a.m. 
DBCR0, according to the Freescale EREF, is guaranteed to be updated, and
changes take effect, after an isync plus change of MSR[DE] from 0 to 1.
Otherwise it's guaranteed to be updated "eventually".  Use the expected
synchronization sequence to write it for resetting.

This prevents "Reset failed" from being printed immediately before the CPU
resets.

MFC after:	2 weeks
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72e58595 jhibbits May 23, 2019, 3:40 a.m. 
Actually set the source and destination VA's before using them.  Fixes a
bizarre panic on 32-bit Book-E.  Not sure why this wasn't caught by the
compiler.
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73f11451 dougm May 23, 2019, 2:10 a.m. 
Reported by: LINT
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9c6dc2fe ian May 23, 2019, 1:49 a.m. 
is to use no whitespace between a comment block and the code it describes.
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a2119d62 ian May 23, 2019, 1:41 a.m. 
The logic I originally wrote to detect whether a driftfile option was in the
set of flags was based on the result of removing the pattern *flag* being an
empty string.  That didn't handle the case where the string was empty to
begin with.  Doh!  So now it also specifically checks for an empty string.

The result of the bad check was that ntpd would run without a driftfile, but
it would do so only if it was running as root instead of the non-priveleged
ntpd user, which isn't a typical case.  Ntpd runs fine without a driftfile,
although it does take it longer to stabilize the clock frequency at startup.

Reported by:	avg@
Pointy hat:	ian@
MFC after:	some testing
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e5b50fe7 asomers May 23, 2019, 12:44 a.m. 
This commit adds the VOPs needed by userspace NFS servers (tested with
net/unfs3).  More work is needed to make the in-kernel nfsd work, because of
its stateless nature.  It doesn't open files prior to doing I/O.  Also, the
NFS-related VOPs currently ignore the entry cache.

Sponsored by:	The FreeBSD Foundation
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2013b723 asomers May 23, 2019, 12:22 a.m. 
Consolidate all calls to fuse_vnode_setsize as a result of a file attribute
change to one location in fuse_internal_setattr.  There are still a few
calls elsewhere that happen as a result of a write.

Sponsored by:	The FreeBSD Foundation
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18a2264e asomers May 22, 2019, 11:30 p.m. 
When mounted with -o default_permissions and when
vfs.fusefs.data_cache_mode=2, fuse_io_strategy would try to clear the suid
bit after a successful write by a non-owner.  When combined with a
not-yet-committed attribute-caching patch I'm working on, and if the
FUSE_SETATTR response indicates an unexpected filesize (legal, if the file
system has other clients), this would end up calling vtruncbuf.  That would
panic, because the buffer lock was already held by bufwrite or bufstrategy
or something else upstack from fuse_vnop_strategy.

Sponsored by:	The FreeBSD Foundation
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c63f1e21 cem May 22, 2019, 11:22 p.m. 
These are all enumerated in Intel's ISA extension reference, 37th ed.

Sponsored by:	Dell EMC Isilon
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fa581662 dougm May 22, 2019, 11:11 p.m. 
1. Change size_t to vm_size_t in some places.
2. Rename vm_map_entry_resize_free to drop the _free part.
3. Fix whitespace errors.
4. Fix screwups in patch-conflict-management that left out important
changes related to growing and shrinking objects.

Reviewed by: alc
Approved by: kib (mentor)
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55ece394 kevans May 22, 2019, 11:07 p.m. 
In commit r345845, a portion of documentation for the create subcommand was
removed. Specifically, for creating a snapshot of an existing boot
environment. bectl even has a test-case for this functionality.

Removing the sub-command description was discussed in PR 235850.

This patch brings back the second "create" description that was originally
in place. Albeit, with a few wording/clarifying changes.

Submitted by:	Rob Fairbanks <rob.fx907 gmail com>
Reviewed by:	kevans
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D20249
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134399fc ian May 22, 2019, 9:47 p.m.
26c49788 cem May 22, 2019, 9:47 p.m. 
Tag saved entropy files as "nodump," to signal that the files should not be
backed up by dump(8) or other automated backup software that honors the file
flag.

Do not produce an error if the target file resides on a filesystem that does
not support file flags (e.g., msdos /boot).

Reviewed by:	delphij
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D20358
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563ab4e4 melifaro May 22, 2019, 9:20 p.m. 
Currently rinit1() and its IPv6 counterpart
  nd6_prefix_onlink_rtrequest() uses dummy null_sdl gateway address
  during route insertion and change it afterwards. This behaviour
  brings complications to the routing stack and the users of its
  upcoming notification system.

This change fixes both rinit1() and nd6_prefix_onlink_rtrequest()
  by filling in proper gateway in the beginning. It does not change any
  of the userland notifications as in both cases, they happen after
  the insertion and fixup process (rt_newaddrmsg_fib() and nd6_rtmsg()).

MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D20328
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a3055557 ian May 22, 2019, 9:06 p.m. 
Some i2c controller hardware does not provide a way to do individual START,
REPEAT-START and STOP actions on the i2c bus.  Instead, they can only do
a complete transfer as a single operation.  Typically they can do either
START-data-STOP or START-data-REPEATSTART-data-STOP.  In the i2c driver
framework, this corresponds to the iicbus_transfer method.  In the userland
interface they are initiated with the I2CRDWR ioctl command.

These changes add a new 'tr' mode which can be specified with the '-m'
command line option.  This mode should work on all hardware; when an i2c
controller driver doesn't directly support the iicbus_transfer method,
code in the i2c driver framework uses the lower-level START/REPEAT/STOP
methods to implement the transfer.  After this new mode has gotten some
testing on various hardware, the 'tr' mode should probably become the
new default mode.

PR:		189914
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