Re: [PATCH 0/4] efi/arm64: unmap the kernel during runtime service calls

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On 1/25/2018 3:31 AM, Ard Biesheuvel wrote:

Note that capsule update has been omitted. This is a bit involved, and
I'd rather get some feedback before burning too many cycles on that. All
other services should be functional, with the caveat that EFI variable
names are now limited to 1024 [wide] characters, and UEFI variables
themselves to 64 KB.


I'm curious, why these limitations?

We don't have any concern about the name length limitation at this time, but the variable size one is concerning.

We have a feature which creates a variable greater than 64KB that we want to utilize from Linux. The size limitation would seem to prevent that.

--
Jeffrey Hugo
Qualcomm Datacenter Technologies as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.
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