In D31768#716892, @emaste wrote:

Does Parallels have a way to provide fine-grained control over guest devices? I.e., instead of "Other Linux" or such, a "Custom" setting that offers individual on/off controls? (Even if Parallels offers a "FreeBSD" setting, the appropriate devices to enable may change over time and with FreeBSD versions.)

In D31768#716875, @trasz wrote:

Now, regarding "vm.efi.dtb=0": with "Other", things change like this (I've omitted changes to USB enumeration order, I guess that's random):

--- other.txt   2021-09-01 16:24:24.720243000 +0000
+++ other-nodtb.txt     2021-09-01 16:29:38.989275000 +0000
 gic0: pn 0x0, arch 0x2, rev 0x0, implementer 0x0 irqs 128
+gic0: frame: 0 2250000 0 0 0
 gicv2m0: <ARM Generic Interrupt Controller MSI/MSIX> mem 0x2250000-0x2250fff on gic0

Would be nice if someone could test this on ACPI system, without FDT (I don't have a FreeBSD build environment atm).

In D29694#666735, @jhb wrote:

Hmm, I should post some of my reviews. I have a branch that does this for most architectures but I also added some helpers to reduce code duplication in activate/deactive_resource methods. I also tried to fix some layering violations that I should perhaps untangle as that made the branch larger. The helpers at least are probably useful so I'll try to resurrect those soon.