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

..

arm

docs/arm: Document where Xen should be loaded in memory

2023-10-25 11:02:33 +01:00

xen-makefiles

docs/misc: fix document typo

2023-07-20 10:03:53 +02:00

9pfs.pandoc

xen/public: move xenstore related doc into 9pfs.h

2023-02-06 08:52:15 +01:00

amd-ucode-container.txt

docs, amd_ucode: condense amd_ucode notes

2014-10-16 10:07:56 +02:00

block-scripts.txt

hotplug/FreeBSD: document disk hotplug interface

2016-04-06 15:50:45 +01:00

console.txt

xen/arm: vpl011: Update documentation for vuart console support

2017-10-03 15:23:38 -07:00

crashdb.txt

build: convert crash_debug to Kconfig

2016-06-08 14:09:16 +02:00

distro_mapping.txt

Config.mk: Remove unused setvar_dir macro

2019-12-13 16:30:34 +00:00

dump-core-format.txt

dump-core: update the documentation

2009-01-15 12:40:48 +00:00

efi.pandoc

EFI: strip xen.efi when putting it on the EFI partition

2022-07-18 17:48:40 +02:00

grant-tables.txt

gnttab: split maptrack lock to make it fulfill its purpose again

2017-08-15 15:07:25 +02:00

hvm-emulated-unplug.pandoc

docs/markdown: Switch to using pandoc, and fix underscore escaping

2019-01-02 17:50:36 +00:00

hypfs-paths.pandoc

xen/cpupool: make per-cpupool sched-gran hypfs node writable

2021-01-22 12:15:21 +01:00

kexec_and_kdump.txt

kexec: provide user friendly option for memory limit

2017-06-09 14:11:37 +02:00

libxl_memory.txt

docs: initial documentation for xenstore paths

2012-10-01 17:54:11 +01:00

livepatch.pandoc

build: Use HTTPS for all xenbits.xen.org Git repos

2023-03-24 16:29:13 +00:00

netif-staging-grants.pandoc

docs/misc: add netif staging grants design document

2017-10-05 09:27:25 -04:00

printk-formats.txt

print: introduce a format specifier for pci_sbdf_t

2020-07-28 19:33:28 +01:00

pv-drivers-lifecycle.pandoc

docs/markdown: Switch to using pandoc, and fix underscore escaping

2019-01-02 17:50:36 +00:00

pvcalls.pandoc

pvcalls: Document correctly and explicitely the padding for all arches

2020-07-10 09:52:24 -07:00

pvh.pandoc

x86/pvh: drop v2 suffix from pvh.pandoc

2020-02-25 17:21:45 +00:00

qemu-backends.txt

docs: add misc/qemu-backends.txt

2016-04-20 18:59:11 +01:00

status-override-table-spec.fodt

docs: convert STAO from odt to fodt

2017-02-15 11:40:16 -08:00

stubdom.txt

Document ioemu Linux stubdomain protocol

2020-05-18 23:23:44 +01:00

support-matrix-head.html

docs: Provide support-matrix-generate, to generate a support matrix in HTML

2018-04-12 16:13:49 +01:00

vtd-pi.txt

VT-d Posted-intterrupt (PI) design

2015-12-10 13:11:25 +01:00

vtd.txt

docs etc.: https: Fix references to wiki.xen[project].org

2020-03-30 15:27:06 +01:00

vtpm-platforms.txt

vtpmmgr: use XSM label as vTPM kernel hash

2014-04-23 11:58:26 +01:00

x86-xenpv-bootloader.pandoc

docs/markdown: Switch to using pandoc, and fix underscore escaping

2019-01-02 17:50:36 +00:00

xen_config.html

tools: vnet: Remove

2011-03-25 21:59:20 +00:00

xen-command-line.pandoc

cmdline: document and enforce "extra_guest_irqs" upper bounds

2024-07-04 14:14:16 +02:00

xen-env-table-spec.fodt

docs: convert XENV from odt to fodt

2017-02-15 11:40:37 -08:00

xen-error-handling.txt

docs: Add description of BUILD_BUG_ON().

2008-12-04 16:36:43 +00:00

xenmon.txt

docs: Move misc README's into docs/misc/

2015-08-27 19:14:17 +01:00

xenpaging.txt

docs: update xenpaging.txt

2012-08-30 17:57:31 +01:00

xenstore-paths.pandoc

docs: fix complex-and-wrong xenstore-path wording

2023-05-26 09:15:39 +02:00

xenstore-ring.txt

tools/xenstore: add documentation for extended watch command

2022-09-08 09:28:30 +02:00

xenstore.txt

tools/xenstore: remember global and per domain max accounting values

2023-06-07 12:10:31 +01:00

xl-psr.pandoc

docs/markdown: Switch to using pandoc, and fix underscore escaping

2019-01-02 17:50:36 +00:00

xsm-flask.txt

flask/label-pci: Allow specifying optional irq label

2023-03-14 10:46:00 +01:00