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xen/docs
Jan Beulich 30c695ddaf cmdline: document and enforce "extra_guest_irqs" upper bounds
PHYSDEVOP_pirq_eoi_gmfn_v<N> accepting just a single GFN implies that no
more than 32k pIRQ-s can be used by a domain on x86. Document this upper
bound.

To also enforce the limit, (ab)use both arch_hwdom_irqs() (changing its
parameter type) and setup_system_domains(). This is primarily to avoid
exposing the two static variables or introducing yet further arch hooks.

While touching arch_hwdom_irqs() also mark it hwdom-init.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>

amend 'cmdline: document and enforce "extra_guest_irqs" upper bounds'

Address late review comments for what is now commit 17f6d398f7:
- bound max_irqs right away against nr_irqs
- introduce a #define for a constant used twice

Requested-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
master commit: 17f6d398f7
master date: 2024-07-02 12:00:27 +0200
master commit: 1f56accba3
master date: 2024-07-03 14:03:27 +0200
2024-07-04 14:14:16 +02:00
..
…
2023-11-13 15:01:05 +00:00
2018-11-14 19:25:11 +00:00
2023-11-13 15:01:05 +00:00
2022-12-12 12:29:09 +01:00

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