On Mon, Apr 12, 2021 at 7:38 PM Hans de Goede <hdegoede@xxxxxxxxxx> wrote:
>
> Hi Rafael,
>
> Sorry about the timing of reporting this regression.
Oh well.
> I just noticed that overriding the DSDT (*) from the initrd will not work in 5.12,
> this is caused by:
>
> commit 1a1c130ab757 ("ACPI: tables: x86: Reserve memory occupied by ACPI tables")
>
> This makes the initial acpi_locate_initial_tables() call happen earlier
> then before, but the acpi_table_upgrade) call in arch/x86/kernel/setup.c is
> not moved up, so the tables in the initrd are now only parsed and saved
> after the initial ACPI table scanning has already been done.
>
> I guess fixing this might be as easy as moving the acpi_table_upgrade) call
> higher in arch/x86/kernel/setup.c but I'm not sure if that is save to do.
Why do you think it may not be safe?
Have you tried to do that?
