port-xen/58373: Missing KDTRACE_HOOKS in Xen kernels

[campbell+netbsd%mumble.net@localhost]

>Number:         58373
>Category:       port-xen
>Synopsis:       Missing KDTRACE_HOOKS in Xen kernels
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-xen-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jun 27 13:10:00 +0000 2024
>Originator:     Taylor R Campbell
>Release:        10
>Organization:
The XenBSDtrace Foundation
>Environment:
>Description:
Committed to HEAD but never pulled up:

https://mail-index.netbsd.org/source-changes/2023/07/21/msg146150.html
https://mail-index.netbsd.org/source-changes/2023/07/21/msg146151.html
https://mail-index.netbsd.org/source-changes/2023/07/21/msg146152.html
https://mail-index.netbsd.org/source-changes/2023/07/22/msg146171.html
https://mail-index.netbsd.org/source-changes/2023/07/22/msg146172.html
https://mail-index.netbsd.org/source-changes/2023/07/22/msg146173.html
>How-To-Repeat:
# modload dtrace
[ 591773.132744] kobj_checksyms, 1004: [solaris]: linker error: symbol `sdt_provider_sdt' not found
[ 591773.132744] WARNING: module error: unable to affix module `solaris', error 8
[ 591773.132744] WARNING: module error: recursive load failed for `dtrace' (`solaris' required), error 8

>Fix:
pull up changes to 10