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SubjectRe: kexec reboot fails with extra wbinvd introduced for AME SME
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> 
> Does anybody have any other ideas?

wbinvd is thankfully not common, but also not rare (MTRR setup and a bunch of other cases)
and in some other operating systems it happens even more than on Linux.. it's generally not totally broken like this.

I can only imagine a machine check case where a write back to a bad cell causes some parity error
or something... but it's odd that no other machine checks are reported?
(can the user check for this please)

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