PowerPC kernel is of DYN type and it has a base address where it is
initially loaded, before being relocated. As the start address passed to
pmcstat_image_link() is where the kernel was relocated to, but the symbols
always use the original base address, we need to subtract it to get the
correct offset.
Reviewed by: jhibbits
Sponsored by: Eldorado Research Institute (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D26114
This change adds support for POWER8/9 performance counters.
Reviewed by: jhibbits
Sponsored by: Eldorado Research Institute (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D26113
This change adds support for POWER8 and POWER9 PMCs (bare metal and
pseries).
All PowerISA 2.07B non-random events are supported.
Implementation was based on that of PPC970.
Reviewed by: jhibbits
Sponsored by: Eldorado Research Institute (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D26110
Sample usage: kernel modules can decide whether to stick to malloc or
create their own zone.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D27097
This provides an OpenCrypto driver for Intel QuickAssist devices. The
driver was initially ported from NetBSD and comes with a few
improvements:
- support for GMAC/AES-GCM, AES-CTR and AES-XTS, and support for
SHA/HMAC-authenticated encryption
- support for detaching the driver
- various bug fixes
- DH895X support
Discussed with: jhb
MFC after: 3 days
Sponsored by: Rubicon Communications, LLC (Netgate)
Differential Revision: https://reviews.freebsd.org/D26963
The 2 provided zones had inconsistent naming between each other
("int" and "64") and other allocator zones (which use bytes).
Follow malloc by naming them "pcpu-" + size in bytes.
This is a step towards replacing ad-hoc per-cpu zones with
general slabs.
And add a _74XX suffix to 74XX SPRs.
This is a preparation for adding support to POWER8/9 PMCs, which have most
SPRs equal to 970 ones.
Reviewed by: jhibbits
Sponsored by: Eldorado Research Institute (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D26532
On a sample box vmstat -z shows:
ITEM SIZE LIMIT USED FREE REQ
64: 64, 0, 1043784, 4367538,3698187229
selfd: 64, 0, 1520, 13726,182729008
But at the same time:
vm.uma.selfd.keg.domain.1.pages: 121
vm.uma.selfd.keg.domain.0.pages: 121
Thus 242 pages got pulled even though the malloc zone would likely accomodate
the load without using extra memory.
Memory allocated by bus_dmamem_alloc will take into account any alignment
requirements of the CPU it's running on. Stop trying to bounce in this case
as there is no bounce zone allocated.
Reported by: manu, tuexen
Tested by: manu
Sponsored by: Innovate UK
This prevents LANG= in an included file from affecting the interpretation
of month and day names in the including file.
Make the internal pre-processor accept white space between the "#" at
the start of the line and the keyword for better compatibility with cpp.
Add support for the cpp keywords #warning and #error.
MFC after: 3 days
Add a pseudofs node flag 'PFS_AUTODRAIN', which automatically emits sbuf
contents to the caller when the sbuf buffer fills. This is only
permissible if the corresponding PFS node fill function can sleep
whenever it appends to the sbuf.
linprocfs' /proc/self/maps node happens to meet this requirement.
Streaming out the file as it is composed avoids truncating the output
and also avoids preallocating a very large buffer.
Reviewed by: markj; earlier version: emaste, kib, trasz
Differential Revision: https://reviews.freebsd.org/D27047
- Removed a bunch of redundant headers
- Don't explicitly initialize to 0
- The !error check prior to setting imgp->interpreter_name is redundant, all
error paths should and do return or go to 'done'. We have larger problems
otherwise.
lz4 port from illumos to Linux added a 16KB per-CPU cache to accommodate for
the missing 16KB malloc. FreeBSD supports this size, making the extra cache
harmful as it can't share buckets.
In pmap_bootstrap(), we fill kernel_pmap->pm_active since it is
invariably active on all harts. However, this marks it as active even
for harts that don't exist in the system, which can cause issue when the
mask is passed to the SBI firmware via sbi_remote_sfence_vma().
Specifically, the SBI spec allows SBI_ERR_INVALID_PARAM to be returned
when an invalid hart is set in the mask.
The latest version of OpenSBI does not have this issue, but v0.6 does,
and this is triggering a recently added KASSERT in CI. Switch to only
setting bits in pm_active for harts that enter the system.
Reported by: Jenkins
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D27080
automatically by tools via /etc/make.conf, so remind people (me) where
to find where it's set..
It would be nice for someone to document what DISTDIR is better than:
where the file for a distribution gets installed
Linux allows polling without any events specified and it happens to be the case
in FreeBSD as well. POLLHUP has to be delivered regardless of the event mask
and this works fine if the condition is already present. However, if it is
missing, selrecord is only called if the eventmask has relevant bits set. This
in particular leads to a conditon where pipe_poll can return 0 events and
neglect to selrecord, while kern_poll takes it as an indication it has to go to
sleep, but then there is nobody to wake it up.
While the problem seems systemic to *_poll handlers the least we can do is fix
it up for pipes.
Reported by: Jeremie Galarneau <jeremie.galarneau at efficios.com>
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D27094
sysctl 'kern.cryptodevallowsoft' was renamed to 'kern.crypto.allow_soft' in
r359374 and the prevous one is only available in kernel built with
"options COMPAT_FREEBSD12".
Fix one case where #else was not corerctly processed and simplify the
conditions logic.
Fix parsing of day and month names in the locale specified in the calendar
file. The previous version would expect those names to match the locale of
the user.
Mention that comments are now correctly processed and that // is supported
in addition to /* ... */.
MFC after: 3 days
Currently atkbdc(4) assumes all coreboot BIOSes belonging to Chromebooks
and unconditionally sets a number of quirks to workaround known issues.
Exclude "System76" laptops from this set as they appeared to be a
traditional hardware ("lemur Pro" is a rebranded Clevo chassis) with
coreboot firmware on board. KBDC_QUIRK_KEEP_ACTIVATED quirk activated for
Chromebook platform makes keyboard on this devices inoperable.
"Purism Librem" laptops may require the same exclusion too.
PR: 250711
Reported by: nick.lott@gmail.com
MFC after: 2 weeks
Previously the code had one wait channel for all pending writers.
This could result in a buggy scenario where after a writer switches
the lock mode form readers to writers goes off CPU, another writer
queues itself and then the last reader wakes up the latter instead
of the former.
Use a separate channel.
While here add features to reliably detect whether curthread has
the lock write-owned. This will be used by ZFS.
This will be used by fuse(4).
Reviewed by: asomers
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26974
Follow-up to r367323 by re-adding static to a number of the functions
copied from elftc's libelftc_vstr.c. This was requested by upstream.
PR: 250702
MFC after: 3 days
The amd64 kernel handles certain types of exceptions on a dedicated
stack. Currently the sizes of these stacks are all hard-coded to
PAGE_SIZE, but for at least NMI handling it can be useful to use larger
stacks. Add constants to intr_machdep.h to make this easier to tweak.
No functional change intended.
Reviewed by: kib
MFC after: 1 week
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D27076
This is mostly mechanical except for vmspace_exit(). There, use the new
refcount_release_if_last() to avoid switching to vmspace0 unless other
processes are sharing the vmspace. In that case, upon switching to
vmspace0 we can unconditionally release the reference.
Remove the volatile qualifier from vm_refcnt now that accesses are
protected using refcount(9) KPIs.
Reviewed by: alc, kib, mmel
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D27057
The former is intended for use in vmspace_exit(). The latter is to
encourage use of explicit loads rather than relying on the volatile
qualifier. This works better with kernel sanitizers, which can
intercept atomic(9) calls, and makes tricky lockless code easier to read
by not forcing the reader to remember which variables are declared
volatile.
Reviewed by: kib, mjg, mmel
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D27056
The existing format string for the empty case was trying to read varargs
values that weren't passed to xo_emit. This appears to work on x86 (since
the next argument is probably a pointer an empty string), but for CHERI
we can bound variadic arguments and detect a read past the end.
While touching these lines also use the libxo 'a' modifier to avoid having to
construct the libxo format string using asprintf.
Found by: CHERI
Reviewed By: allanjude
Differential Revision: https://reviews.freebsd.org/D26885
Implement the bs_sr_<N> generic functions based on the generic
mips implementation calling the generic bs_w_<N> functions in a loop.
ral(4) (rt2860.c) panics in RAL_SET_REGION_4() because bs_sr_4()
is NULL. It seems ral(4) and ti(4) might be the only consumers of
these functions I could find quickly so keeping them in C rather than asm.
Reported by: Steve Wheeler (https://redmine.pfsense.org/issues/11021)
Reviewed by: mmel
MFC after: 3 days
Correct a typo referring to the wrong flags in a comment.
No functional changes.
MFC after: 3 days
Sponsored by: Rubicon Communications, LLC (d/b/a "Netgate")
LLVM's demangler supports more modern C++ constructs such as lambdas and
unnamed types, and is actively maintained. The command line tool is
usable as a drop-in replacement for GNU c++filt, or elftoolchain's
cxxfilt. The latter is still available by using WITHOUT_LLVM_CXXFILT, if
needed.
PR: 250702
MFC after: 2 weeks
This updates the private copy of libelftc_dem_gnu3.c in libcxxrt with
the most recent version from upstream r3877. Similar to r367322, this
fixes a number of possible assertions, and allows it to correctly
demangle several names that it could not handle before.
PR: 250702
MFC after: 3 days
