Re: kexec reboot fails with extra wbinvd introduced for AME SME

From: Dave Young
Date: Wed Jan 17 2018 - 21:57:24 EST


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