On 1/31/22 04:42, Ard Biesheuvel wrote:

> On Mon, 31 Jan 2022 at 00:22, Ard Biesheuvel<ardb@kernel.org>  wrote:
>> I've had a stab at refactoring this code. Branch can be found here:
>> https://github.com/ardbiesheuvel/edk2/tree/armpkg-mpservicesdxe-refactor
>>
> OK, I've did some more work on this, and ended up with a branch that
> builds and runs correctly on Raspberry Pi 4. Note that it requires
> cache maintenance in the test app as well, or the ApFunction() routine
> may be sitting in the cache on the BSP, and the AP will branch to who
> knows where.

Thanks. I'll do some testing on my end and review the changes.
I did notice thatDmaLib is missing from ArmPkg/ArmPkg.dsc. -- Rebecca Cran