src/sys/dev/hyperv, branch main

Hyper-V: Detect Extended Destination ID support

2026-03-28T05:54:59+00:00

Hyper-V advertises support for the Extended Destination ID standard via
bit 2 of the value returned in the EAX register when the hypervisor
stack properties are queried via CPUID.

This is based on a commit to the Linux kernel, as there does not seem
to be any other documentation of this feature.

Reviewed by:	Souradeep Chakrabarti
MFC after:	3 weeks
Sponsored by:	Amazon
Differential Revision:	https://reviews.freebsd.org/D55432

chore: replace {0, 0} with {DEV,KOBJ}METHOD_END

2026-02-25T05:59:34+00:00

Both of the aforementioned macros have been present in FreeBSD
for well over a decade: 2009 for `KOBJMETHOD_END`; 2011 for
`DEVMETHOD_END`.

Adapt all hardcoded references of `{0, 0}` with `DEVMETHOD_END`
and `KOBJMETHOD_END` as appropriate. This helps ensure that
future adaptations to drivers following patterns documented
in driver(9) can be made more easily/without issue.

MFC after:	1 week
Differential Revision:	 https://reviews.freebsd.org/D55414

Hyper-V: hn: just call vf's ioctl when changing mtu

2025-12-23T05:38:40+00:00

When changing mtu, if a vf is attached to the netvsc interface, just
calling its ioctl to change vf's mtu is good enough.

Tested by:	whu
MFC after:	3 days
Sponsored by:	Microsoft

bus_alloc_resource: Pass rid by value to BUS_ALLOC_RESOURCE DEVMETHOD

2025-12-09T20:00:06+00:00

The wrapper functions such as bus_alloc_resource_any() still support
passing the rid by value or pointer, but the underlying implementation
now passes by value.

Reviewed by:	imp
Differential Revision:	https://reviews.freebsd.org/D53402

hn: use newly exposed RSS hash key API rather than ad-hoc hashing

2025-11-22T14:29:34+00:00

Differential Revision:	https://reviews.freebsd.org/D53099
Sponsored by: Netflix

hyper-v: Fix a couple of typos in kernel messages

2025-10-28T08:07:28+00:00

- s/tranparent/transparent/
- s/Unknow/Unknown/
- s/qury/query/

MFC after:	1 week

vmbus: Avoid gratuitous ifdef and use more generic implementation instead

2025-07-10T19:33:33+00:00

Checking for __LP64__ is non-portable as it assumes that ILP32 and LP64
are the only two ABIs that exist, but CheriBSD supports an additional
ABI where long is still 64-bit but pointers are 128-bit capabilities,
and thus __LP64__ is not defined. We could change this to check the
value of __SIZEOF_LONG__, since the code here only cares about that
aspect of the ABI, however in this instance, the only real reason an
ifdef is used at all is to be able to get log2(sizeof(u_long)), but if
we instead multiply and divide rather than shift, and let the compiler
optimise that to a shift, we can just use sizeof(u_long) instead. Note
also that VMBUS_EVTFLAGS_MAX could always just have been defined as
VMBUS_EVTFLAGS_SIZE / sizeof(u_long).

Reviewed by:	jhb
Differential Revision:	https://reviews.freebsd.org/D50630

newbus: replace leftover device unit wildcards

2025-06-21T02:57:45+00:00

Reviewed by:	imp, jhb
Approved by:	imp (mentor)
Differential Revision:	https://reviews.freebsd.org/D50913

machine/stdarg.h -> sys/stdarg.h

2025-06-11T16:39:02+00:00

Switch to using sys/stdarg.h for va_list type and va_* builtins.

Make an attempt to insert the include in a sensible place.  Where
style(9) was followed this is easy, where it was ignored, aim for the
first block of sys/*.h headers and don't get too fussy or try to fix
other style bugs.

Reviewed by:	imp
Exp-run by:	antoine (PR 286274)
Pull Request:	https://github.com/freebsd/freebsd-src/pull/1595

Remove remaining mentions of pr_usrreq.

2025-05-08T14:29:15+00:00

When struct pr_usrreq was folded into struct protosw and the function
pointers it contained were renamed from pru_* to pr_* in 2022, a
number of references to the old names in comments and error messages
were missed.  Chase them down and fix them.

Sponsored by:	Klara, Inc.
Sponsored by:	NetApp, Inc.
Reviewed by:	kevans, glebius
Differential Revision:	https://reviews.freebsd.org/D50190