this replaces the following near the syscall exit:
cmp $0x39,%rax
ja 0xffffffff8108f82c
movabs $0x200001800060005,%rcx
bt %rax,%rcx
jae 0xffffffff8108f82c
with:
test %edi,%edi
jne 0xffffffff8091a49c
This in particular significantly shortens amd64_syscall, which otherwise
keeps jumping forward over 2KB of code in total.
Note some of these branches should be either eliminated altogether or
coalesced.
The hack in question is intended to workaround seemingly bogus #line markers
in cpp output. As far as I can tell, llvm cpp doesn't do this by default, so
there's no reason to add -P.
In our /bin/sh, the main incantation should be placed in a sub-shell in
order to properly pipe the output to fgrep.
The main motivation for this change is admittedly to stop emitting the noise
about clang not being gcc in make -s buildworld
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D22952
The latter is a typedef of the former; the typedef exists and these bits are
representing vmprot values, so use the correct type.
Submitted by: sigsys@gmail.com
MFC after: 3 days
know that if there are any outstanding CCBs, then when they dereference the path
that's freed at the bottom of camperiphfree there will be some flavor of
panic. This moves that eventual panic to a traceback of when we free the last
reference on the device, which is earlier but may not be early enough.
lld 10.0 seems to generate this relocation for rdtsc_mb() ifunc in our libc.
Reported, reviewed, and tested by: dim (amd64, previous version)
Discussed with: emaste
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D23652
exited but not yet joined thread.
Before, if the thread exited but was not yet joined, we returned
ESRCH.
According to IEEE Std 1003.1™-2017 recommendation in the
description of pthread_cancel(3):
If an implementation detects use of a thread ID after the end of its
lifetime, it is recommended that the function should fail and report
an [ESRCH] error.
So it seems desirable to not return ESRCH until the lifetime of the
thread ID ends. According to the section 2.9.2 Thread IDs,
The lifetime of a thread ID ends after the thread terminates if it
was created with the detachstate attribute set to
PTHREAD_CREATE_DETACHED or if pthread_detach() or pthread_join()
has been called for that thread.
In other words, lifetime for thread ID of exited but not yet joined thread
did not ended yet.
Prompted by: cperciva
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
After sleeping through a memory shortage, we must return NULL rather
than retry.
Discussed with: jeff
Reported by: pho
Sponsored by: The FreeBSD Foundation
The upstream OpenSSL changes only set the cipher for GCM since the
authentication is redundant, and changes to OCF will soon remove the
GCM authentication algorithm constants entirely for the same reason.
In addition, ktls_create_session() already validates these fields and
wouldn't pass down an invalid auth_algorithm value to any drivers or
ktls backends.
Reviewed by: hselasky
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D23671
It duplicated the kern_tls_records stat and was not conditional on NIC
TLS being enabled.
Reviewed by: np
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D23670
During buildkernel there are very frequent calls to priv_check and they
all are for PRIV_VFS_GENERATION (coming from stat/fstat).
This results in branching on several potential privileges checking if
perhaps that's the one which has to be evaluated.
Instead of the kitchen-sink approach provide a way to have commonly used
privs directly evaluated.
All checking routines walk a linked list of all modules in order to determine
if given hook is installed. This became a significant problem after mac_ntpd
started being loaded by default.
Implement a way perform checks for select hooks by testing a boolean.
Use it for priv_check and priv_grant, which are constantly called from priv_check.
The real fix would use hotpatching, but the above provides a way to know when
to do it.
--tabsize was previously listed as optional_argument, but didn't account for
the optionality of it in the argument handling. This is irrelevant -- the
manpage doesn't indicate that the argument is optional, and indeed there's
no clear interpretation of omitting the argument because there's no other
side effect of --tabsize.
The "malformed" argument part of the header on this message is simply
referring to usage like this:
% diff --tabsize 4 A B
With an optional_argument, the argument must be attached to the parameter
directly (e.g. --tabsize=4), so the argument is effectively NULL with the
above invocation as if no argument had been passed.
PR: 243974
Submitted by: fehmi noyan isi <fnoyanisi yahoo com> (diff.c portion)
MFC after: 3 days
Disable new clang 10.0.0 warnings about misleading indentation in ce(4)
and cp(4).
These are false positives, since some of the driver source has been
deliberately obfuscated.
MFC after: 3 days
Fix the following -Werror warning from clang 10.0.0 in sconfig:
sbin/sconfig/sconfig.c:909:5: error: misleading indentation; statement is not part of the previous 'else' [-Werror,-Wmisleading-indentation]
exit (-1);
^
sbin/sconfig/sconfig.c:907:6: note: previous statement is here
} else
^
The intent was to group the exit() call with the previous fprintf()
call.
MFC after: 3 days
Initialize the FCH SMBus controller for Hygon Dhyana CPU.
Set the vendor of the FCH description via the exact CPU vendor.
Submitted by: Pu Wen <puwen@hygon.cn>
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D23558
sbin/sconfig/sconfig.c:909:5: error: misleading indentation; statement is not part of the previous 'else' [-Werror,-Wmisleading-indentation]
exit (-1);
^
sbin/sconfig/sconfig.c:907:6: note: previous statement is here
} else
^
The intent was to group the exit() call with the previous fprintf()
call.
MFC after: 3 days
Presumably a bool definition is obtained via header contamination on
FreeBSD-CURRENT. Found while trying to upstream FreeBSD addr2line
changes - the FreeBSD 11.2 CI build failed there.
Reported by: Cirrus-CI, upstream ELF Tool Chain
MFC with: r357844
Sponsored by: The FreeBSD Foundation
Add support for decoding pressed keys as a bitmap. The keys in the
bitmap are described in the interface specific HID descriptor. Some
keyboards even have multiple input interfaces, only using the bitmap
method when the event array is full. That typically means when more
than seven keys are pressed simultaneously.
The internals of the USB keyboard driver have been slightly reworked
to keep track of all keys in a single bitmap having 256 bits. This
bitmap is then divided into blocks of 64-bits as an optimisation.
Simplify automatic key repeat logic, because only the last key pressed
can be repeated.
PR: 224592
PR: 233884
Tested by: Alex V. Petrov <alexvpetrov@gmail.com>
MFC after: 1 week
Sponsored by: Mellanox Technologies
services: Add PROFInet and EtherCAT.
Both are admitedly very niche features and no known users exist currently.
I am doing a further review/update of the services file (see D23621) and
both of these are not likely to be considered.
a single instance: use snd_recover also where sack_newdata was used.
Submitted by: Richard Scheffenegger
Differential Revision: https://reviews.freebsd.org/D18811
