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xen: introduce xen_has_percpu_evtchn()

Description

xen: introduce xen_has_percpu_evtchn()

xen_vector_callback_enabled is x86 specific and availability of
per-cpu event channel delivery differs on other architectures.

Introduce a new helper to check if there's support for per-cpu event
channel injection.

Submitted by: Elliott Mitchell <ehem+freebsd@m5p.com>
Reviewed by: royger
Differential Revision: https://reviews.freebsd.org/D29402

Details

Provenance
julien_xen.orgAuthored on Oct 10 2015, 7:40 PM
roygerCommitted on Jul 28 2021, 3:27 PM
Reviewer
royger
Differential Revision
D29402: xen: introduce xen_support_evtchn_bind()
Parents
R10:46c46edd1889: xen/control: print warning on call of xctrl_suspend()
Branches
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