[PATCH] efi/libstub: arm64: avoid SetVirtualAddressMap() when possible #forregzbot

[Thorsten Leemhuis]

[Note: this mail is primarily send for documentation purposes and/or for
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On 20.10.22 14:39, Thorsten Leemhuis wrote:

>> After entering 6.1-rc1 the efi runtime services is not working on my platform:
>>
>> [    0.054039] Remapping and enabling EFI services.
>> [    0.054043] UEFI virtual mapping missing or invalid -- runtime services will not be available
>>
>> Not sure this patch is the root cause since I see some refactor of efi codes in 6.1-rc1,
>> but simply reverting this make EFI runtime services works again. Tested on HiSilicon's
>> Kunpeng 920 arm64 server using 48 bit VA address:
> 
> #regzbot ^introduced d3549a938b73f203ef522562ae9f2d38aa43d234
> #regzbot title efi/libstub: arm64: efi runtime services stopped working
> #regzbot ignore-activity

#regzbot fixed-by: 37926f96302d8b6

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)

P.S.: As the Linux kernel's regression tracker I deal with a lot of
reports and sometimes miss something important when writing mails like
this. If that's the case here, don't hesitate to tell me in a public
reply, it's in everyone's interest to set the public record straight.