src/sys/dev/xen, branch main

xen/acpi: implement hook to notify Xen about entering sleep state

2026-02-27T07:39:11+00:00

This is required so that ACPI power-off (entering S5) works as expected, as
the ACPI PM1a and PM1b blocks might not be accessible by dom0 directly.
Additionally, Xen also needs to do cleanup before entering a sleep state,
so it needs to be notified about it.

With this patch FreeBSD dom0 now powers off the host correctly:

acpi0: Powering system off...
(XEN) [   85.686598] arch/x86/hvm/emulate.c:415:d0v0 fixup p2m mapping for page fedc6 added
(XEN) [   85.687606] arch/x86/hvm/emulate.c:415:d0v0 fixup p2m mapping for page fbc10 added
(XEN) [   85.692357] Preparing system for ACPI S5 state.
(XEN) [   85.692702] Disabling non-boot CPUs ...
(XEN) [   85.694471] Broke affinity for IRQ9, new: {0-7}
[...]
(XEN) [   85.903118] Entering ACPI S5 state.

Should be a non-functional change when not running as a Xen dom0.

Reviewed by: kib
Sponsored by: Citrix Systems R&D
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D55504

sys/xen: Use __printflike() instead of format(printf)

2025-12-28T21:16:40+00:00

The __printflike macro sets the format to freebsd_kprintf which recent
clang understands and warns about. Fixes the following error:
`passing 'printf' format string where 'freebsd_kprintf' format string is expected [-Werror,-Wformat]`

MFC after:	1 week

xen: Use proper prototype for SYSINIT functions

2025-10-13T10:12:30+00:00

The only possible return value of function xen_intr_init() is 0. Make
it return void to match the prototype of SYSINIT.

MFC after:	1 week

power: Add stype parameter in power_suspend/resume eventhandlers

2025-10-06T21:49:41+00:00

Add enum sleep_type stype parameter in power_suspend/resume event
handlers, as with the introduction of s2idle there are more than one
type of suspend.

Reviewed by:	bz
Approved by:	bz
Sponsored by:	The FreeBSD Foundation

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

xen: Add support for platform device with id 5853:0002

2025-05-08T16:06:27+00:00

According to
https://xenbits.xen.org/docs/unstable/man/xen-pci-device-reservations.7.html
the Xen Platform Device can either be 5853:0001 or 5853:0002.
Currently kernel only recognises 5853:0001. Add detection for 5853:0002.
Tested with XenServer and different machine templates.

Reviewed by: royger

efi: Move to using efi_guid_t in ioctl definitions

2025-05-01T17:53:40+00:00

Start using efi_guid_t instead of struct uuid in the ioctl
definitions. These are binarily the same, but have different
structure definitions. EFI prefers this form, and to allow more
sharing with EDK2, make this slight addition.

I've not really defined new IOCTLs for this. They are the same
size, but I have defined new function.

Also fix in-kernel uses of uuid to efi_guid_t for anything related to
ioctl.

Sponsored by:		Netflix
Reviewed by:		tsoome, kib
Differential Revision:	https://reviews.freebsd.org/D50057

xen/netfront: use iflladdr_event to send ARPs

2024-12-16T14:49:29+00:00

Avoids usage of arp_ifinit() and if_foreach_addr_type().  The former
isn't encouraged to be used in drivers and the latter is about to
change to not expose struct ifaddr.

Reviewed by:		royger, ehem_freebsd_m5p.com
Differential Revision:	https://reviews.freebsd.org/D48053

Replace calls to bus_generic_attach with bus_attach_children

2024-12-06T22:26:16+00:00

Reviewed by:	imp
Differential Revision:	https://reviews.freebsd.org/D47675

Replace calls to bus_generic_probe with bus_identify_children

2024-12-06T22:26:05+00:00

Reviewed by:	imp
Differential Revision:	https://reviews.freebsd.org/D47674