On 02/23/16 17:47, Ard Biesheuvel wrote: > On 23 February 2016 at 17:06, Laszlo Ersek <[email protected]> wrote: > [supersnip] >> By that I don't mean *another* new PCD, beyond the ACPI version PCD that >> Ard's patch series already contains -- I mean a more generic PCD that >> *replaces* the ACPI version PCD, and controls the allocations across all >> drivers. >> > > I disagree here. Whether you want only ACPI 5.0 and later tables, and > whether you need your allocations to be below 4 GB to be shareable > with PEI are completely orthogonal, imo. > > In fact, I am going to respin the AcpiTableDxe to keep the FACS table > below 4 GB for now, and we can wire it up to whichever solution we > come with up when we do, because I don't see this discussion coming to > a close in the near future. On top of that, FACS is not even used on > arm64 as far as I can figure out. > > Note that I still think this is a valuable discussion to have, but > allocating below 4 GB because ACPI tables only carry 32-bit address > fields or allocating below 4 GB because of some internal PI limitation > are completely different things, and should not be confused.
Fair enough. So let's see if we can find a way (another new PCD, or another mechanism) that can constrain the allocations in question below 4GB. Thanks Laszlo _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
