[Bug 277211] panic: Unhandled external data abort - handle_el1h_sync - --- exception, esr 0x96000410 - wait_fw_init - mlx5_load_one

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=277211

John Baldwin <jhb@FreeBSD.org> changed:

           What    |Removed                     |Added
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             Status|New                         |In Progress

--- Comment #4 from John Baldwin <jhb@FreeBSD.org> ---
From what I could tell when I looked at this before for Dave, this appears to
be an issue specific to linuxkpi used by the mlx5 driver.  In particular, it
uses bus_translate_resource in its wrapper for pci_resource_start and I had
asked Dave to boot with an additional patch to try to trace what is going on
there to see if it is getting the wrong answer.  The mlx5 driver assumes that
pci_resource_start gives a valid physical address it can pass to ioremap to
create a memory mapping of the BAR.

The patch with the debugging trace is here: https://reviews.freebsd.org/P632

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