There is a hardware problem between Cortex-A9 CPUs and on-chip devices
in Armada 38X SoCs that may cause hang on heavy load. This can be
however worked around by mapping all registers and PCI IO
as strongly ordered instead of device memory.
Submitted by: Zbigniew Bodek <zbb@semihalf.com>
Reviewed by: mmel
Tested by: mw_semihalf.com
Obtained from: Semihalf
Differential revision: https://reviews.freebsd.org/D10218
r320070 removed the definition of maxbcachebuf from sys/param.h to
fix the build for arm.
This patch adds the definition of maxbcachebuf to sys/buf.h, which
should be ok, since sys/buf.h is not being included in arm/arm/elf_note.S.
Suggested by: kib
MFC after: 2 weeks
Do not queue dmar_map_entries with zeroed gseq to
dmar_qi_invalidate_locked(). Zero gseq stops the processing in the qi
task. Do not assign possibly uninitialized on-stack gseq to map
entries when requeuing them on unit tlb_flush queue. Random garbage
in gsec is interpreted as too high invalidation sequence number and
again stop the processing in the task.
Make the sequence numbers generation completely contained in
dmar_qi_invalidate_locked() and dmar_qi_emit_wait_seq(). Upper code
directly passes boolean requesting emiting wait command instead of
trying to provide hint to avoid it by passing NULL gseq pointer.
Microoptimize the requeueing to tlb_flush queue by doing it for the
whole queue.
Diagnosed and tested by: Brett Gutstein <bgutstein@rice.edu>
Discussed with: alc
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Most of the lock slowpaths assert that the calling thread isn't an idle
thread. However, this may not be true if the system has panicked, and in
some cases the assertion appears before a SCHEDULER_STOPPED() check.
MFC after: 3 days
Sponsored by: Dell EMC Isilon
If the user issues a MTIOCEXTGET ioctl, and the tape drive in question has
a serial number that is longer than 80 characters, we malloc a buffer in
saextget() to hold the output of cam_strvis().
Since a mutex is held in that codepath, doing a M_WAITOK malloc could lead
to sleeping while holding a mutex. Change it to a M_NOWAIT malloc and bail
out if we fail to allocate the memory. Devices with serial numbers longer
than 80 bytes are very rare (I don't recall seeing one), so this
should be a very unusual case to hit. But it is a bug that should be fixed.
sys/cam/scsi/scsi_sa.c:
In saextget(), if we need to malloc a buffer to hold the output of
cam_strvis(), don't wait for the memory. Fail and return an error
if we can't allocate the memory immediately.
PR: kern/220094
Submitted by: Jia-Ju Bai <baijiaju1990@163.com>
MFC after: 3 days
Sponsored by: Spectra Logic
Since buildenv exports SYSROOT all of these uses will now look in
WORLDTMP by default.
sys/boot/efi/loader/Makefile
A LIBSTAND hack is no longer required for buildenv.
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
VM_MAP_WIRE_SYSTEM mode when wiring the newly grown stack.
System maps do not create auto-grown stack. Any stack we handled,
even for P_SYSTEM, must be for user address space. P_SYSTEM processes
with mapped user space is either init(8) or an aio worker attached to
other user process with aio buffer pointing into stack area. In either
case, VM_MAP_WIRE_USER mode should be used.
Noted and reviewed by: alc
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
device nodes.
Otherwise, the current check of aio_offset == -1LL makes it possible
to pass negative file offsets down to the filesystems. This trips
assertions and is even unsafe for e.g. FFS which keeps metadata at
negative offsets.
Reported and tested by: pho
Reviewed by: jhb
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D11266
Starting with DTS from Linux 4.11, the pins list, function, drive and pull
are no longer prefixed with "allwinner,".
Allow the pinctrl driver to handle both case.
The code still doesn't use d_off. That will come in a future commit.
The code also removes the checks for servers returning a fileno that
doesn't fit in 32bits, since that should work ok now.
Bump __FreeBSD_version since this patch changes the interface between
the NFS kernel modules.
Reviewed by: kib
use the armv6 busdma interface. This interface uses more memory than
the armv4 one, but bounces more data more often so may be more correct
than the armv4 one. It is intended for debugging purposes only at the
moment.
load and unload it all the time since the buffer never changes. In
addition, we were loading it with a hardware spin lock held, which
makes the sleepable lock in busdma (for the bounce pages) trigger a
witness warning, as well as ipend being called with it held by uart,
which made it impossible to unload.
These differences don't matter with the v4 busdma implementation, but
they do with the v6 implementation since the latter likes to bounce
transactions more, and will always do so for Atmel's driver.
It's more efficient as well as being more correct.
We can have support for reading ext4 "huge" files but we can't write
(anything) on ext4. and some filesystem. Formally enable the feature so
that we can mount such filesystems.
Submitted by: Fedor Uponov
Differential Revision: https://reviews.freebsd.org/D11209
that disk writes are more likely to be sequential. This change is
beneficial on both the solid state and mechanical disks that I've
tested. (A similar change in allocation policy was made by DragonFly
BSD in 2013 to speed up Poudriere with "stressful memory parameters".)
Increase the width of blst_meta_alloc()'s parameter "skip" and the local
variables whose values are derived from it to 64 bits. (This matches the
width of the field "skip" that is stored in the structure "blist" and
passed to blst_meta_alloc().)
Eliminate a pointless check for a NULL blist_t.
Simplify blst_meta_alloc()'s handling of the ALL-FREE case.
Address nearby style errors.
Reviewed by: kib, markj
MFC after: 5 weeks
Differential Revision: https://reviews.freebsd.org/D11247
timecounter instead of the GPT timer, freeing up the more flexible GPT
hardware for other uses. The EPIT driver is a standard (always in the
kernel) driver, and the existing GPT driver is now optional and included
only if you ask for device imx_gpt.
global timer was successful, since the implementation tries to read it.
Notably, if the platform has a variable-frequency global timer (because
of dynamic frequency scaling), it doesn't set up the global timer for use
as a system timecounter, and in that case it also can't use it for DELAY.
Such platforms use different timer hardware for both timecounter and DELAY.
list.h includes a number of FreeBSD headers as a workaround for the
LIST_HEAD name collision. To reduce pollution, avoid including list.h
in commonly used headers when it is not explicitly needed.
Reviewed by: hselasky
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D11249
arm build.
In the arm build, elf_note.S includes sys/param.h and then does an
elf macro called ELFNOTE(). Although the compile error doesn't make
sense to me, I believe it just means that an "extern ..." can't exist
in param.h for this inclusion case.
I suspect adding #if !defined(LOCORE) might fix the build, but this
commit just takes the definition out.
I will ask freebsd-current@ what is the best was to deal with this
and do a subsequent commit after that.
Reported by: melounmichal@gmail.com
Clang 4.0 accepts the smc instruction with or without specifying
.arch_extension sec, but Clang 5.0 produces an error without it.
MFC after: 3 weeks
Sponsored by: The FreeBSD Foundation
Add a make.conf DTC variable that control which DTC (Device Tree Compiler)
to use.
Reviewed by: bdrewery, imp
Differential Revision: https://reviews.freebsd.org/D9577
By making MAXBCACHEBUF a tunable, it can be increased to allow for
larger read/write data sizes for the NFS client.
The tunable is limited to MAXPHYS, which is currently 128K.
Making MAXPHYS a tunable or increasing its value is being discussed,
since it would be nice to support a read/write data size of 1Mbyte
for the NFS client when mounting the AmazonEFS file service.
Reviewed by: kib
MFC after: 2 weeks
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D10991
This generates startup LORs and panics when adding elements to bridge
devices. I will document further in https://reviews.freebsd.org/D10681
PR: 220073
Submitted by: dchagin
Reported by: db
The arm kernel linker scripts place the .init_pagetable section in .bss,
but .init_pagetable had no section flags set, and so did not match the
expected flags for .bss.
GNU ld silently ignores this case, but lld reports an error:
ld: error: incompatible section flags for .bss
>>> locore.o:(.init_pagetable): 0x0
>>> output section .bss: 0x3
PR: 220055
Submitted by: mmel, Rafael Espíndola
MFC after: 3 weeks
Sponsored by: The FreeBSD Foundation
for the rtl8188eu chipset
- Rename struct r92c_rom member names: s/channel_plan/reserved5/,
s/xtal_calib/channel_plan to be compliant with definitions of the efuse
in vendor hal_pg.h
dirty. Assert that they are fully dirty rather than redundantly calling
vm_page_dirty() on them.
Reviewed by: kib, markj
MFC after: 1 week
X-MFC after: r319932
This change implements NOTE_ABSTIME flag for EVFILT_TIMER, which
specifies that the data field contains absolute time to fire the
event.
To make this useful, data member of the struct kevent must be extended
to 64bit. Using the opportunity, I also added ext members. This
changes struct kevent almost to Apple struct kevent64, except I did
not changed type of ident and udata, the later would cause serious API
incompatibilities.
The type of ident was kept uintptr_t since EVFILT_AIO returns a
pointer in this field, and e.g. CHERI is sensitive to the type
(discussed with brooks, jhb).
Unlike Apple kevent64, symbol versioning allows us to claim ABI
compatibility and still name the new syscall kevent(2). Compat shims
are provided for both host native and compat32.
Requested by: bapt
Reviewed by: bapt, brooks, ngie (previous version)
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D11025
Implement simple chain loader in loader; this update does add chain command,
taking device or file as argument to load and start new boot loader.
In case of BIOS, the chain will read the boot block to address 0000:7c00 and
jumps on it. In case of UEFI, the chain command is to be used with efi
application, typically stored in EFI System Partition.
The update also does add simple menu entry, if the variable chain_disk is set.
The value of the variable chain_disk is used as argument for chain loading.
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D5992
Currently some ARM platforms implement their own platform_probe_and_attach()
function and other use common routine that calls platform's PLATFORM_ATTACH
method.
Keep the old description to match the preferred way of naming things.
Pointed out by: andrew
This brings the default configurations (drivers, net80211 settings, etc) and some
of the shared configuration into std.AR_MIPS_BASE. I haven't yet moved the
-current settings (witness, memguard, etc) into it.
This should simplify building a lot of the same test images for my MIPS AP board
development and testing.
This is a work in progress; it's not designed to be perfect!
iflib - Handle out of order packet delivery from hardware in support of LRO
Out of order updates to rxd's is fixed in r315217. However, it is not
completely fixed. While refilling the buffers, iflib is not considering
the out of order descriptors. Hence, it is refilling sequentially.
"idx" variable in _iflib_fl_refill routine is incremented sequentially.
By doing refilling sequentially, it will override the SGEs that
are *IN USE* by other connections. Fix is to maintain a bitmap of
rx descriptors and differentiate the used one with unused one and
refill only at the unused indices. This patch also fixes a
few bugs in bnxt, related to the same feature.
Submitted by: bhargava.marreddy@broadcom.com
Reviewed by: shurd@
Differential Revision: https://reviews.freebsd.org/D10681
Do not attempt to initialize netmap queues that are already initialized
or aren't supposed to be initialized. Similarly, do not free queues
that are not initialized or aren't supposed to be freed.
PR: 217156
Sponsored by: Chelsio Communications
