Re: HEADSUP: panic: running without device atpic requires a local APIC on UEFI systems after 0b01d45783c3

On Mon, Nov 20, 2023 at 6:21 PM Xin Li <delphij@delphij.net> wrote:

> Hi,
>
> It seems that the recent improvements of ACPI detection (e0f3dc82727f
> and 0b01d45783c3) would leave the system in an unbootable state if the
> UEFI files are not being updated at the same time of "make
> installworld".  At early boot the kernel would panic with:
>
> panic: running without device atpic requires a local APIC on UEFI systems
>
> To recover a system in this state, at loader prompt, use:
>
> unset hint.acpi.0.disabled
> boot
>
> (I think core.lua should be modified to be compatible with an older UEFI
> payload, possibly issuing a warning that gets logged; and this should be
> mentioned in UPDATING)
>

I just pushed
https://cgit.freebsd.org/src/commit/?id=f213da893ca8c7c76e1656b36d3a10f93f9a1760
which should fix the issue for x86, with an UPDATING entry for aarch64.

This is at best a stop-gap kludge. The real solution would be for
loader.efi to publish a list of interfaces it implements and then the lua
code can cope with old/new better.

Warner