Comment 125 for bug 2034477
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#125 |
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bbfa235
(Get the code!)
Created attachment 305248
run missing BIOS init sequence
#43:
Although simplistic I'm worried that is overzealous. It's going to apply to Epyc processors too, and those happen to be used in things like Azure. In Azure don't they use the NULL PIC path? I don't know if the Zen X86 feature exposes into confidential computing VM though.
How about instead we just run the missing initialization sequence from the BIOS as a quirk when these systems are detected?
Have a try with this patch instead.