0d6516b4 jrtc27 Oct. 17, 2021, 2:35 p.m.
82098c8b jrtc27 Oct. 17, 2021, 2:32 p.m. 
Linux KPIs like pci_resource_start/len assume that BARs have been
allocated, but FreeBSD lazily allocates BARs if it cannot allocate the
firmware-allocated BARs. Thus using the Linux KPIs must force allocation
of the BARs rather than returning 0 for the start and length, which can
crash drm-kmod drivers that assume the BARs are valid. This is needed
for the AMDGPU driver to be able to attach on SiFive's HiFive Unmatched.

Reviewed by:	hselasky, jhb, mav
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D32447
cgit
60d962e0 jrtc27 Oct. 17, 2021, 2:32 p.m. 
Now that riscv implements pmap_mapdev_attr we can enable the non-stub
implementation for riscv, which is needed for drm-kmod to not fail at
run time for drivers that need to map I/O regions.

Reviewed by:	hselasky, bz
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D32446
cgit
682c00a6 jrtc27 Oct. 17, 2021, 2:31 p.m. 
This is needed for LinuxKPI's _ioremap_attr. This reuses the generic
implementation introduced for aarch64, and itself requires implementing
pmap_kenter, which is trivial to do given riscv currently treats all
mapping attributes the same due to the Svpbmt extension not yet being
ratified and in hardware.

Reviewed by:	markj, mhorne
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D32445
cgit
0f559a9f trasz Oct. 17, 2021, 12:49 p.m. 
Make vmdaemon timeout configurable, so that one can adjust
how often it runs.

Here's a trick: set this to 1, then run 'limits -m 0 sh',
then run whatever you want with 'ktrace -it XXX', and observe
how the working set changes over time.

Reviewed By:	kib
Sponsored By:	EPSRC
Differential Revision:	https://reviews.freebsd.org/D22038
cgit
70774c63 trasz Oct. 17, 2021, 12:46 p.m. 
Update the procfs(5) man page to clarify that it's deprecated.

Reviewed By:	bcr, 0mp (earlier version)
Sponsored By:	EPSRC
Differential Revision: https://reviews.freebsd.org/D22275
cgit
99f563ed trasz Oct. 17, 2021, 12:19 p.m. 
This ratelimits the "unsupported getsockopt level 6 optname 11"
warnings that happen all the time when watching Netflix.

Sponsored By:	EPSRC
Differential Revision:	https://reviews.freebsd.org/D32454
cgit
a03d4d73 trasz Oct. 17, 2021, 11:53 a.m. 
It's triggered by gdb(1).

Sponsored By:	EPSRC
Differential Revision:	https://reviews.freebsd.org/D32456
cgit
f9246e14 trasz Oct. 17, 2021, 11:20 a.m. 
This makes Linux gdb from Bionic a little less broken.

Sponsored By:	EPSRC
Differential Revision:	https://reviews.freebsd.org/D32455
cgit
75a9d95b trasz Oct. 17, 2021, 10:49 a.m. 
The tests/ptrace_syscall_info test from strace(1) complained
about this.

Sponsored By:	EPSRC
Differential Revision:	https://reviews.freebsd.org/D32368
cgit
7e7859e7 trasz Oct. 17, 2021, 10:19 a.m. 
This fixes tcflush(3), unbreaking cheribuild.py under arm64 Focal.

Reviewed By:	imp
Sponsored By:	EPSRC
Differential Revision:	https://reviews.freebsd.org/D32291
cgit
1045352f mjg Oct. 17, 2021, 8:42 a.m. 
Reported by:	syzbot+bd48ee0843206a09e6b8@syzkaller.appspotmail.com
Fixes:		7dd419cabc6bb9e0 ("cache: add empty path support")
cgit
a3a82ed8 0mp Oct. 17, 2021, 8:02 a.m.
a7d137fc kib Oct. 16, 2021, 11:37 p.m. 
PIE and shared objects usually have many relative relocations. In
2017/2018, a compact relative relocation format RELR was proposed on
https://groups.google.com/g/generic-abi/c/bX460iggiKg/m/GxjM0L-PBAAJ
("Proposal for a new section type SHT_RELR") and is a pre-standard.
RELR usually takes 3% or smaller space than R_*_RELATIVE relocations.
The virtual memory size of a mostly statically linked PIE is typically
5~10% smaller.

ld.lld --pack-dyn-relocs=relr emits RELR relocations. DT_RELR has been
adopted by Android bionic, Linux kernel's arm64 port, Chrome OS (patched
glibc).

This patch adds DT_RELR support to FreeBSD rtld-elf.

MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D32524
cgit
1cf06333 kib Oct. 16, 2021, 11:37 p.m. 
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D32526
cgit