Re: [edk2-devel] [Patch v2 1/1] MdeModulePkg/Core/Dxe: Set MemoryTypeInfo bin range from HOB

["Laszlo Ersek" <lersek@redhat.com>]

On 1/23/24 21:24, Michael D Kinney wrote:
> Provide an optional method for PEI to declare a specific address
> range to use for the Memory Type Information bins. The current
> algorithm uses heuristics that tends to place the Memory Type
> Information bins in the same location, but memory configuration
> changes across boots or algorithm changes across a firmware
> updates could potentially change the Memory Type Information bin
> location.

(5) Why is such a rearrangement of the bins -- which is likely visible
in the UEFI memory map, too -- a problem?

Can we include a hint on that in the commit message?

I understand why it would be a problem across ACPI S4, but a memory
config change (DIMM addition/removal?), or a firmware update, seems to
require a full S5 power cycle.

Thanks
Laszlo



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