kexec reboot fails with extra wbinvd introduced for AME SME

Dave Young dyoung at redhat.com
Wed Jan 17 18:57:02 PST 2018


On 01/17/18 at 06:53pm, Arjan van de Ven wrote:
> > 
> > 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)

Could you say more about how to check this? My .config disabled
CONFIG_X86_MCE, should this be enabled?

Thanks
Dave




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