Many thanks to ian who gently provided me the DS1307 breakout board.
Tested on: Raspberry pi
Differential Revision: https://reviews.freebsd.org/D2022
Reviewed by: rpaulo
a new filesystem before packaging it into a disk image. This prevents
"remnants" of deleted files from showing up in the VM images, and reduces
their compressed size (by about 10% for the cloudware images) as a result.
Looks good to: gjb
to get the default frequency of the sdhci device.
While here use a u_int to hold the frequency as it may be too large to fit
in a 32-bit signed integer. This is the case when we have a 250MHz clock.
and create a "hidden" API that can be used in other system headers without
adding namespace pollution.
- If the POPCNT instruction is enabled at compile time, use
__builtin_popcount*() to implement __bitcount*(), otherwise fall back
to software implementations.
- Use the existing bitcount16() and bitcount32() from <sys/systm.h> to
implement the non-POPCNT __bitcount16() and __bitcount32() in
<sys/types.h>.
- For the non-POPCNT __bitcount64(), use a similar SWAR method on 64-bit
systems. For 32-bit systems, use two __bitcount32() operations on the
two halves.
- Use __bitcount32() to provide a __bitcount() that operates on plain ints.
- Use either __bitcount32() or __bitcount64() to provide a
__bitcountl() that operates on longs.
- Add public bitcount*() wrappers for __bitcount*() for use in the kernel
in <sys/libkern.h>.
- Use __builtinl() instead of __builtin_popcountl() in BIT_COUNT().
Discussed with: bde
Each plaform performs virtual memory split between kernel and user space
and assigns kernel certain amount of memory space. However, is is sometimes
reasonable to change the default values. Such situation may happen on
systems where the demand for kernel buffers is high, many devices occupying
memory etc. This of course comes with the cost of decreasing user space
memory range so shall be used with care. Most embedded systems will not
suffer from this limtation but rather take advantage of this potential
since default behavior is left unchanged.
Submitted by: Wojciech Macek <wma@semihalf.com>
Reviewed by: imp
Obtained from: Semihalf
translation. In particular, despite IO-APICs only take 8bit apic id,
IR translation structures accept 32bit APIC Id, which allows x2APIC
mode to function properly. Extend msi_cpu of struct msi_intrsrc and
io_cpu of ioapic_intsrc to full int from one byte.
KPI of IR is isolated into the x86/iommu/iommu_intrmap.h, to avoid
bringing all dmar headers into interrupt code. The non-PCI(e) devices
which generate message interrupts on FSB require special handling. The
HPET FSB interrupts are remapped, while DMAR interrupts are not.
For each msi and ioapic interrupt source, the iommu cookie is added,
which is in fact index of the IRE (interrupt remap entry) in the IR
table. Cookie is made at the source allocation time, and then used at
the map time to fill both IRE and device registers. The MSI
address/data registers and IO-APIC redirection registers are
programmed with the special values which are recognized by IR and used
to restore the IRE index, to find proper delivery mode and target.
Map all MSI interrupts in the block when msi_map() is called.
Since an interrupt source setup and dismantle code are done in the
non-sleepable context, flushing interrupt entries cache in the IR
hardware, which is done async and ideally waits for the interrupt,
requires busy-wait for queue to drain. The dmar_qi_wait_for_seq() is
modified to take a boolean argument requesting busy-wait for the
written sequence number instead of waiting for interrupt.
Some interrupts are configured before IR is initialized, e.g. ACPI
SCI. Add intr_reprogram() function to reprogram all already
configured interrupts, and call it immediately before an IR unit is
enabled. There is still a small window after the IO-APIC redirection
entry is reprogrammed with cookie but before the unit is enabled, but
to fix this properly, IR must be started much earlier.
Add workarounds for 5500 and X58 northbridges, some revisions of which
have severe flaws in handling IR. Use the same identification methods
as employed by Linux.
Review: https://reviews.freebsd.org/D1892
Reviewed by: neel
Discussed with: jhb
Tested by: glebius, pho (previous versions)
Sponsored by: The FreeBSD Foundation
MFC after: 3 weeks
only adds support for kernel-toolchain, however it is expected further
changes to add kernel and userland support will be committed as they are
reviewed.
As our copy of binutils is too old the devel/aarch64-binutils port needs
to be installed to pull in a linker.
To build either TARGET needs to be set to arm64, or TARGET_ARCH set to
aarch64. The latter is set so uname -p will return aarch64 as existing
third party software expects this.
Differential Revision: https://reviews.freebsd.org/D2005
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
queue. They are for first-level translations and device TLB.
Review: https://reviews.freebsd.org/D1892
Reviewed by: neel
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
* Just do the buf check early and fail out
* If the offset being searched is:
00110000 00 b5 7e 45 61 e2 76 d3 c1 78 dd 15 95 cd 1f f1 |..~Ea.v..x......|
.. and the match string is '.!/bin/sh'
.. then it'll set the match string[0] to '\0', do a strncmp() against
the read buffer, find it's matching two zero-length strings, and think
that's where to start.
MFC after: 2 weeks
promoted" panics. The sequence of events that leads to a panic is rather
long and circuitous. First, suppose that process P has a promoted
superpage S within vm object O that it can write to. Then, suppose that P
forks, which leads to S being write protected. Now, before P's child
exits, suppose that P writes to another virtual page within O. Since the
pages within O are copy on write, a shadow object for O is created to
house the new physical copy of the faulted on virtual page. Then, before
P can fault on S, P's child exists. Now, when P faults on S, it will
follow the "optimized" path for copy-on-write faults in vm_fault(),
wherein the underlying physical page is moved from O to its shadow object
rather than allocating a new page and copying the new page's contents from
the old page. Moreover, suppose that every 4 KB physical page making up S
is moved to the shadow object in this way. However, the optimized path
does not move the underlying superpage reservation, which is the root
cause of the panics! Ultimately, P performs vm_object_collapse() on O's
shadow object, which destroys O and in doing so breaks any reservations
still belonging to O. This leaves the reservation underlying S in an
inconsistent state: It's simultaneously not in use and promoted. Breaking
a reservation does not demote it because I never intended for a promoted
reservation to be broken. It makes little sense. Finally, this
inconsistency leads to an assertion failure the next time that the
reservation is used.
The failing assertion does not (currently) exist in FreeBSD 10.x or
earlier. There, we will quietly break the promoted reservation. While
illogical and unintended, breaking the reservation is essentially
harmless.
PR: 198163
Reviewed by: kib
Tested by: pho
X-MFC after: r267213
Sponsored by: EMC / Isilon Storage Division
bsdconfig's f_package_add doesn't seem to support using the pkg repo from /etc/pkg/FreeBSD.conf, it also tries to run the commands on the installer image, not in the destination chroot
Instead, manually bootstrap pkg in the chroot, and then install the requested packages (in the chroot)
Doesn't use pkg -c, because pkg is not installed on the installer image
PR: 196250
Differential Revision: https://reviews.freebsd.org/D2026
Approved by: bapt
Sponsored by: ScaleEngine Inc.
- Move to ANSI definitions syntax, removing warnings about type promotions.
- Remove __P().
- Staticise everything.
- Remove warnings about unused args for signal handlers.
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
The granularity reported by READ BLOCK LIMITS is an exponent, not a
byte value. So a granularity of 0 means 2^0, or 1 byte. A
granularity of 1 means 2^1, or 2 bytes.
Print out the individual block limits on separate lines to improve
readability and avoid exceeding 80 columns.
usr.bin/mt/mt.c:
Fix and improve the 'mt rblim' output. Add a MT_PLURAL()
macro so we can print "byte" or "bytes" as appropriate.
Sponsored by: Spectra Logic
MFC after: 4 days
The only drives I have discovered so far that support medium type
reports are newer HP LTO (LTO-5 and LTO-6) drives. IBM drives
only support the density reports.
sys/cam/scsi/scsi_sa.h:
The number of possible density codes in the medium type
report is 9, not 8. This caused problems parsing all of
the medium type report after this point in the structure.
usr.bin/mt/mt.c:
Run the density codes returned in the medium type report
through denstostring(), just like the primary and secondary
density codes in the density report. This will print the
density code in hex, and give a text description if it
is available.
Thanks to Rudolf Cejka for doing extensive testing with HP LTO drives
and Bacula and discovering these problems.
Tested by: Rudolf Cejka <cejkar at fit.vutbr.cz>
Sponsored by: Spectra Logic
MFC after: 4 days
in other places that set the external storage type (ext_type) such as
m_cljset(), m_extadd(), mb_ctor_clust(), and vn_sendfile().
Differential Revision: https://reviews.freebsd.org/D2080
Reviewed by: np, glebius
MFC after: 2 weeks
conversion:
- The linux compat API layer casts the ticks to unsigned long which
might cause problems when the ticks value is negative.
- Guard against already expired ticks values, by checking if the
passed expiry tick is already elapsed.
- While at it avoid referring the address of an inlined function.
MFC after: 3 days
Sponsored by: Mellanox Technologies
-O Force the archive to be one volume. If a volume ends prematurely, pax will
not prompt for a new volume.
PR: 198481
Submitted by: Sevan Janiyan
Reviewed by: allanjude (doc)
* Fix the multiple same-named devclasses; the duplicate name
trips up the linker.
* Re-do the taskqueue stuff to use the new cpuset API, not the old
pinned API.
* Add includes for the new location of the RSS configuration routines.
This allows ixgbe to compile as a module /and/ linked into the kernel,
along with RSS working.
Sponsored by: Norse Corp, Inc.
