neel [Wed, 6 May 2015 05:40:20 +0000 (05:40 +0000)]
Do a proper emulation of guest writes to MSR_EFER.
- Must-Be-Zero bits cannot be set.
- EFER_LME and EFER_LMA should respect the long mode consistency checks.
- EFER_NXE, EFER_FFXSR, EFER_TCE can be set if allowed by CPUID capabilities.
- Flag an error if guest tries to set EFER_LMSLE since bhyve doesn't enforce
segment limits in 64-bit mode.
gjb [Tue, 5 May 2015 21:08:50 +0000 (21:08 +0000)]
Fix building BEAGLEBONE images with Crochet using the
sysutils/u-boot-beaglebone port:
- In arm/BEAGLEBONE.conf, set EMBEDDEDPORTS to the
sysutils/u-boot-beaglebone port.
- In arm/release.sh, remove BEAGLEBONE from setting WANT_UBOOT
- In tools/arm/crochet-BEAGLEBONE.conf, override the
beaglebone_check_uboot(), and set BEAGLEBONE_UBOOT to
/tmp/external/u-boot-beaglebone, and create symlinks to the
u-boot files in /usr/local/share/u-boot-beaglebone and the
uEnv.txt file in crochet/board/Beaglebone/files.
gjb [Tue, 5 May 2015 16:28:04 +0000 (16:28 +0000)]
Add initial support for building RPI2 images.
In release.sh, allow overriding buildenv_setup() before
the handoff to arm/release.sh.
Copy arm/RPI-B.conf -> arm/RPI2.conf, set UBOOT_PORT and
the correct KERNEL, and add the buildenv_setup() override
to install the sysutils/u-boot-rpi2 port/package.
Copy tools/arm/crochet-RPI-B.conf -> tools/arm/crochet-RPI2.conf,
and set the correct entries for the RaspberryPi2 board.
Thanks to: loos@
Sponsored by: The FreeBSD Foundation
ian [Tue, 5 May 2015 16:09:25 +0000 (16:09 +0000)]
Create std.arm and std.armv6 config files and include the right one from
each of the existing kernel configs. This gives a place to put config
that applies to the entire arch.
Add the ARM_NEW_PMAP option to std.armv6. This is working well in early
testing and it's time for wide exposure, but it's still nice to be able
to fall back to the old implementation for testing when a problem comes
along. Eventually the option and the old implementation will go away.
The opportunity now exists to move a whole lot of boilerplate from all the
arm kernel config files into std.arm*, but that's a commit for another day.
julian [Tue, 5 May 2015 14:52:33 +0000 (14:52 +0000)]
Tweak seekdir, telldir and readdir so that when htere are deletes going on,
as seek to teh last location saved will still work. This is needed for Samba
to be able to correctly handle delete requests from windows. This does not
completely fix seekdir when deletes are present but fixes the worst of the
problems. The real solution must involve some changes to the API for eh VFS
and getdirentries(2).
jilles [Tue, 5 May 2015 13:23:03 +0000 (13:23 +0000)]
cp: Remove fts sorting.
In an attempt to improve performance, cp reordered directories first
(although the comment says directories last). This is not effective with new
UFS layout policies.
The sorting reorders multiple arguments passed to cp, which may be
undesirable.
Additionally, the comparison function does not induce a total order. Per
POSIX, this causes undefined behaviour in qsort().
NetBSD removed the sorting in 2009.
On filesystems that return directory entries in hash/btree order, sorting by
d_fileno before statting improves performance on large directories. However,
this can only be implemented in fts(3).
avg [Tue, 5 May 2015 11:01:06 +0000 (11:01 +0000)]
zfs: do not hold an extra reference on a root vnode while a filesystem is mounted
At present zfs_domount() acquires a reference on the filesystem's root vnode
and that reference is kept until zfs_umount.
The latter calls vflush(rootrefs = 1) to dispose of the extra reference.
There is no explanation of why that reference is kept - what problem it
solves or what behavior it improves.
Also, that logic is FreeBSD specific.
There is one real problem with that reference, though.
zfs recv -F may receive a full, non-incremental stream to a mounted filesystem.
In that case the received root object is likely to have a different z_gen
attribute value. Because of that, zfs_rezget will leave the previous root znode
and vnode disassociated from the actual object (z_sa_hdl == NULL).
Thus, future calls to VFS_ROOT() -> zfs_root() will produce a new vnode-znode
pair, while the old one will be kept alive by the outstanding reference.
So, the outstanding reference will not actually be for the new root vnode
(or, more precisely, vnodes - because a root vnode may be recycled and a newer
one can be created).
As a result, when vflush(rootrefs = 1) s called there will be two problems:
- a leaked reference on the old root vnode preventing a graceful unmount
- insufficient references on the actual root vnode leading to a crash upon
access to the vnode after it is destroyed by vgone() + vdrop()
The second issue will actually override the first one.
andrew [Tue, 5 May 2015 10:35:29 +0000 (10:35 +0000)]
Copy new attribute types when linking. bfd will copy attributes as needed,
however it will fail to output them if the type is not set correctly. This
can happen when it finds an attribute it hasn't seen before, for example
when building shared objects it will use the attributes from crti.o, hwever
this file has no attributes set.
Add apple-boot, apple-hfs and apple-ufs aliases to MBR scheme.
Sort DOSPTYP_* entries in diskmbr.h by value.
Document these scheme-specific types in gpart(8).
peter [Tue, 5 May 2015 05:14:12 +0000 (05:14 +0000)]
Fix an error in r281551, part of the getfsstat() / kern_getfsstat()
rework. The number of entries was supposed to be returned to the user,
not used as a scratch variable.
This broke RELENG_4 jails starting up on current systems.
imp [Tue, 5 May 2015 04:13:48 +0000 (04:13 +0000)]
When dealing with the TI12XX family of parts, we sometimes need to
initialize the MFUNC registers. Our old test of assuming that if this
register is set at all is not quite right. Many scenarios (including
the power-on defaults for chips w/o EEPROMs) land us in trouble. The
MFUNC0 pin should be set to signal #INTA and the MFUNC1 pin should be
set to signal #INTB of multi-socketed devices. Since my memory recalls
issues with blindly clearing the upper bytes of this register, perform
the heuristic only when both MFUNC0 and 1 are clear. We won't work
well using these pins for GPIO, and the serial interrupts won't save
us because we go out of our way to generally disable them. They are
needed to support legacy drivers for 16-bit PC Cards that are
hard-wired to specific IRQ values. Since FreeBSD never had any of
these, we configure the more reliable direct signaling. This was just
one small piece of that which had been left out back in the day.
mav [Mon, 4 May 2015 19:55:01 +0000 (19:55 +0000)]
Implement in-order execution of non-NCQ commands.
Using status updates in r282364, block queue on BSY, DRQ or ERR bits set.
This can be a performance penalization for non-NCQ commands, but it is
required for proper error recovery and standard compliance.
glebius [Mon, 4 May 2015 18:49:25 +0000 (18:49 +0000)]
Fix arithmetical bug in vnode_pager_haspage(). The check against object size
should be done not with the number of pages in the first block, but with the
overall number of pages. While here, add KASSERT that makes sure that BMAP
doesn't return completely irrelevant blocks.
ian [Mon, 4 May 2015 17:59:39 +0000 (17:59 +0000)]
Implement a mechanism for making changes in the kernel<->driver PPS
interface without breaking ABI or API compatibility with existing drivers.
The existing data structures used to communicate between the kernel and
driver portions of PPS processing contain no spare/padding fields and no
flags field or other straightforward mechanism for communicating changes
in the structures or behaviors of the code. This makes it difficult to
MFC new features added to the PPS facility. ABI compatibility is
important; out-of-tree drivers in module form are known to exist. (Note
that the existing api_version field in the pps_params structure must
contain the value mandated by RFC 2783 and any RFCs that come along after.)
These changes introduce a pair of abi-version fields which are filled in
by the driver and the kernel respectively to indicate the interface
version. The driver sets its version field before calling the new
pps_init_abi() function. That lets the kernel know how much of the
pps_state structure is understood by the driver and it can avoid using
newer fields at the end of the structure that it knows about if the driver
is a lower version. The kernel fills in its version field during the init
call, letting the driver know what features and data the kernel supports.
To implement the new version information in a way that is backwards
compatible with code from before these changes, the high bit of the
lightly-used 'kcmode' field is repurposed as a flag bit that indicates the
driver is aware of the abi versioning scheme. Basically if this bit is
clear that indicates a "version 0" driver and if it is set the driver_abi
field indicates the version.
These changes also move the recently-added 'mtx' field of pps_state from
the middle to the end of the structure, and make the kernel code that uses
this field conditional on the driver being abi version 1 or higher. It
changes the only driver currently supplying the mtx field, usb_serial, to
use pps_init_abi().
jhb [Mon, 4 May 2015 14:47:00 +0000 (14:47 +0000)]
Various updates to the ftruncate(2) documentation:
- Note that ftruncate(2) can operate on shared memory objects and cross
reference shm_open(2).
- Note that ftruncate(2) does not change the file position pointer (aka
seek pointer) of the file descriptor.
- ftruncate(2) will fail with EINVAL for all sorts of other fd types than
just sockets, so instead note that it fails for all but regular files and
shared memory objects.
- Note that ftruncate(2) also appeared in 4.2BSD along with truncate(2).
(Or at least the manpage for both appeared in 4.2, I did not check the
kernel code itself to see if either predated 4.2.)
jhb [Mon, 4 May 2015 14:23:31 +0000 (14:23 +0000)]
Partially revert r255486, the first argument to socketpair() is a socket
domain, not a file descriptor. Use 'domain' instead of the original 'd'
for this argument to match socket(2).
adrian [Mon, 4 May 2015 00:32:10 +0000 (00:32 +0000)]
Use bssid validation for data frames only + add RUN -> RUN state transition
However, IBSS merge will be performed only if a driver calls
ieee80211_ibss_merge(); so, this applicable to the ath(4) only.
Also, this should fix bug 167870.
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