https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=287492
John Baldwin <j...@freebsd.org> changed:
What |Removed |Added
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CC| |k...@freebsd.org
--- Comment #3 from John Baldwin <j...@freebsd.org> ---
The issue is that for this system we need to support it's I/O MMU that is used
to remap APIC IDs used in I/O APIC and MSI interrupts so that the interrupt
message uses an APIC ID < 255, but it after it is remapped by the I/O MMU it
ends up using a "real" APIC ID that can be larger.
There are separate I/O MMU drivers for Intel systems (DMAR) vs AMD. 14.2
should have support for DMAR, but I believe only 15.0 has support for AMD's I/O
MMU (and I'm not fully certain if interrupt remapping is enabled by default for
AMD in 15.0). Can you confirm which CPU vendor you are using?
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