[Bug 231064] vgapci device memory not excluded on ThunderX

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231064

--- Comment #3 from Andrew Turner <Andrew at FreeBSD.org> ---
You can try excluding that physical memory from the map by calling
arm_physmem_exclude_region from initarm. It takes the start address, length,
and the EXFLAG_NOALLOC flag, e.g. arm_physmem_exclude_region(0x10000000,
0x01020000, EXFLAG_NOALLOC).

If you put it just after pmap_bootstrap we can still access the memory via the
DMAP to see what data is being put into the range.

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