The intent is to remove all direct zone_mbuf consumers so that ctor/dtor
from that zone can be reimplemented as wrappers around uma, avoiding an
indirect function call.
Reviewed by: kbowling
Discussed with: gallatin
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D30959
The flag was added in 2016 but remains unused.
Reviewed by: kbowling
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D30958
Subtract one SGE for the case of misaligned address. Also take into
account maximum number of sectors reported by firmware, that gives
nicer 256KB limit instead of 276KB calculated from the SGE limit.
While there, remove number of I/O size checks, duplicating what is
already checked by CAM and busdma(9).
MFC after: 1 month
Sponsored by: iXsystems, Inc.
The sysctl nodes which use V_dn_cfg must be marked as CTLFLAG_VNET so
that we use the correct per-vnet offset
PR: 256819
Reviewed by: donner
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D30974
phandle_t is a uint32_t type, <= 0 comparison doesn't work with it as intended.
This caused the ofw_pci code to attach to PCI bus on ACPI based systems.
Since 3eae4e106a ("Fix error value returned by ofw_bus_gen_get_node().")
ofw subsystem can only return -1 for invalid nodes. Use that.
MFC after: 4 weeks
Reviewed by: mw
Differential revision: https://reviews.freebsd.org/D30953
Currently all PCIE windows point to bus address 0x0, which does not match
the values obtained from hardware during EA.
Replace those values with CPU addresses, since in reality we
have a 1:1 mapping between the two.
This patch is queued for Linux v5.14 in linux-next tree:
6bee93d93111 "arm64: dts: fsl-ls1028a: Correct ECAM PCIE window ranges"
The r intc interrupt controller seems to do a lot of things :
- It can handle the NMI interrupt
- It have local interrupts for some device that also can be muxed with GIC
- It can serve as an forwarder for the GIC
It's mostly used for deepsleep/wakeup if I understood correctly and we do not
support this on arm64.
For now just forward everything to the GIC so interrupts works again for device
which now have this interrupts controller set since dts v5.12
Sponsored by: Diablotin Systems
This introduces a new, per-process flag, "NO_NEW_PRIVS", which
is inherited, preserved on exec, and cannot be cleared. The flag,
when set, makes subsequent execs ignore any SUID and SGID bits,
instead executing those binaries as if they not set.
The main purpose of the flag is implementation of Linux
PROC_SET_NO_NEW_PRIVS prctl(2), and possibly also unpriviledged
chroot.
Reviewed By: kib
Sponsored By: EPSRC
Differential Revision: https://reviews.freebsd.org/D30939
When the setting of kern.ipc.maxsockbuf is less than what is
desired for I/O based on vfs.maxbcachebuf and vfs.nfs.bufpackets,
a console message of "Consider increasing kern.ipc.maxsockbuf".
is printed.
This patch modifies the message to provide a suggested value
for kern.ipc.maxsockbuf.
Note that the setting is only needed when the NFS rsize/wsize
is set to vfs.maxbcachebuf.
While here, make nfs_bufpackets global, so that it can be used
by a future patch that adds a sysctl to set the NFS server's
maximum I/O size. Also, remove "sizeof(u_int32_t)" from the maximum
packet length, since NFS_MAXXDR is already an "overestimate"
of the actual length.
MFC after: 2 weeks
Implement dumping core for Linux binaries on amd64, for both
32- and 64-bit executables. Some bits are still missing.
This is based on a prototype by chuck@.
Reviewed By: kib
Sponsored By: EPSRC
Differential Revision: https://reviews.freebsd.org/D30019
Similarly to what's been done on arm64 with commit
712c060c94, when executing a binary, if the
entry point is a thumb symbol, then make sure we set the PSL_T flag, otherwise
the CPU will interpret it in ARM mode, and that will likely leads to an
undefined instruction.
PR: 256899
MFC after: 1 week
Make it possible to specify event codes without an offset of
PMC_EV_ARMV8_FIRST, by setting a machine-dependent flag. This is
required to make use of event definitions from pmu-events.
Reviewed by: ray (slightly earlier version)
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30602
This will be used to detect supported pmu events. The expected format is
the MIDR register with the revision and variant fields masked. See also:
lib/libpmc/pmu-events/arch/arm64/mapfile.csv.
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D30601
Eliminate some unnecessary unlocking and relocking when we have to retry
the operation to avoid deadlock. (All of the other pmap functions that
iterate over a PV list already implemented retries without these same
unlocking and relocking operations.)
Reviewed by: kib, markj
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D30951
If the entry point for the binary executed is a thumb 2 entry point, make
sure we set the PSR_T bit, or the CPU will interpret it as arm32 code and
bad things will happen.
PR: 256899
MFC after: 1 week
Remove any attempt to use _arm_memcpy and _arm_bzero. It was used by some
xscale platforms to provide functions to use the DMA engine for big
zeroing/copying work, but those platforms are long gone, and it's unlikely
anything else will use those.
To avoid duplication in the vmstat -m output rename the kmalloc type short
description to 'lkpikmalloc' as the Linux emulation layer historically names
its linux malloc type as 'linux'.
Reviewed by: hselasky, kib, emaste
Differential Revision: https://reviews.freebsd.org/D30928
MFC after: 2 weeks
Instead of p_elf_machine use machine member of the Elf_Brandinfo which is now
cached in the struct proc at p_elf_brandinfo member.
Note to MFC: D30918, KBI
Reviewed by: kib, markj
Differential Revision: https://reviews.freebsd.org/D30926
MFC after: 2 weeks
To allow the ABI to make a dicision based on the Brandinfo add a link
to the Elf_Brandinfo into the struct proc. Add a note that the high 8 bits
of Elf_Brandinfo flags is private to the ABI.
Note to MFC: it breaks KBI.
Reviewed by: kib, markj
Differential Revision: https://reviews.freebsd.org/D30918
MFC after: 2 weeks
Each unionfs node holds a reference to its parent directory vnode.
A single open file reference can therefore end up keeping an
arbitrarily deep vnode hierarchy in place. When that reference is
released, the resulting VOP_RECLAIM call chain can then exhaust the
kernel stack.
This is easily reproducible by running the unionfs.sh stress2 test.
Fix it by deferring recursive unionfs vnode release to taskqueue
context.
PR: 238883
Reviewed By: kib (earlier version), markj
Differential Revision: https://reviews.freebsd.org/D30748
This adds `sv_elf_core_osabi`, `sv_elf_core_abi_vendor`,
and `sv_elf_core_prepare_notes` fields to `struct sysentvec`,
and modifies imgact_elf.c to make use of them instead
of hardcoding FreeBSD-specific values. It also updates all
of the ABI definitions to preserve current behaviour.
This makes it possible to implement non-native ELF coredump
support without unnecessary code duplication. It will be used
for Linux coredumps.
Reviewed By: kib
Sponsored By: EPSRC
Differential Revision: https://reviews.freebsd.org/D30921
stats are not shared and consequently per-CPU counters only waste
memory.
No slowdown was measured when passing over 20M pps.
Reviewed by: kp
Sponsored by: Rubicon Communications, LLC ("Netgate")
Eliminate some unnecessary unlocking and relocking when we have to retry
the operation to avoid deadlock. (All of the other pmap functions that
iterate over a PV list already implemented retries without these same
unlocking and relocking operations.)
Avoid a pointer dereference by using an existing local variable that
already holds the desired value.
Eliminate some unnecessary repetition of code on a failed fcmpset.
Specifically, there is no point in retesting the DBM bit because it
cannot change state while the pmap lock is held.
Reviewed by: kib, markj
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D30931
Fix forgotten argument and type error. MMCCAM isn't enabled by default,
and I'd mistakenly thought it was, so these went undetected precommit.
Sponsored by: Netflix
xpt_clone_path originally returned a cam_status, but it doesn't do I/O
and should return an errno instead. I added it last year and it's only
used in one place. It's not yet documented, so no doc changes are
nneeded.
Reviewed by: scottl@, mav@
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D30884
These were in the original CAM commit in 3.0, but were not used there,
nor have they been used since then. They also duplicate the now-standard
bool type. Remove them.
Reviewed by: scottl@
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D30879
xpt_bus_register and xpt_bus_deregister returns a hybrid error that's
neither a cam_status, nor an errno, but a mix of both. Update
xpt_bus_register and xpt_bus_deregister to return an errno. The vast
majority of current users compare against zero, which can also be
spelled CAM_SUCCESS. Nobody uses CAM_FAILURE, so remove that symbol
to prevent comfusion (nothing returns it either).
Where the return value is saved, ensure that the variable 'error' is
used to store an errno and 'status' is used to store a cam_status where
it makes the code clearer (usually just in functions that already mix
and match). Where the return value isn't used at all, avoid storing it
at all.
Reviewed by: scottl@, mav@ (earlier version)
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D30860
cam_sim_alloc_dev was only used internally by the MMC system. That has
been convered to using xpt_path_device() and has stopped using this
interface, so this can be retired.
Reviewed by: scottl@, mav@
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D30858
Use the vanilla flavor of cam_sim_alloc. Now that sdiob has been
converted to get the device_t from the cam_path, this data is no longer
necessary.
Reviewed by: scottl@
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D30856
