Messages in this thread | | | Date | Tue, 23 Jun 2020 18:10:10 +0200 | From | Borislav Petkov <> | Subject | Re: Should SEV-ES #VC use IST? (Re: [PATCH] Allow RDTSC and RDTSCP from userspace) |
| |
On Tue, Jun 23, 2020 at 04:32:22PM +0100, Andrew Cooper wrote: > MSR_MCG_STATUS.MCIP, and yes - any #MC before that point will > immediately Shutdown. Any #MC between that point and IRET will clobber > its IST stack and end up sad.
Well, at some point we should simply accept that we're living a little on the edge. That is, until we get IRET with a mask of to-reenable vectors which has #MC, NMI and whatever else vectors. It would be even better if that mask were configurable.
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
| |