Re: [PATCH v5 04/10] x86, efi: Reserve UEFI 2.8 Specific Purpose Memory for dax

2019-09-13 Thread Ard Biesheuvel
On Fri, 30 Aug 2019 at 03:06, Dan Williams wrote: > > UEFI 2.8 defines an EFI_MEMORY_SP attribute bit to augment the > interpretation of the EFI Memory Types as "reserved for a specific > purpose". > > The proposed Linux behavior for specific purpose memory is that it is > reserved for direct-acce

[PATCH v5 04/10] x86, efi: Reserve UEFI 2.8 Specific Purpose Memory for dax

2019-08-29 Thread Dan Williams
UEFI 2.8 defines an EFI_MEMORY_SP attribute bit to augment the interpretation of the EFI Memory Types as "reserved for a specific purpose". The proposed Linux behavior for specific purpose memory is that it is reserved for direct-access (device-dax) by default and not available for any kernel usag