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x86/local_apic.c: add lapic_maxlvt() helper
ad5e3cb95034
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Description

x86/local_apic.c: add lapic_maxlvt() helper

that calculates the max index of the present LVT entry from the value of
the LAPIC version register.

Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D54773

Details

Provenance

kib	Authored on Jan 19 2026, 12:50 PM

Reviewer

Differential Revision

D54773: x86/local_apic.c: Properly calculate the number of LVT entries

Parents

rG83d988288675: sys: do not allow entering vm_fault() on boot until VM is initialized

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kib committed rGad5e3cb95034: x86/local_apic.c: add lapic_maxlvt() helper (authored by kib).Jan 19 2026, 4:20 PM

kib added an edge: D54773: x86/local_apic.c: Properly calculate the number of LVT entries.

kib mentioned this in rG9286d8fe2873: x86/local_apic.c: add lapic_maxlvt() helper.Jan 25 2026, 12:25 AM

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sys/

x86/

x86/

rGad5e3cb95034

sys/x86/x86/local_apic.c

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