Re: [patch 1/2] x86_64 page fault NMI-safe

[Andi Kleen]

> Why do we force IST use for NMI, btw? Maybe we shouldn't, and just use
> the normal kernel stack mechanisms?

If you don't use IST the SYSCALL entry is racy during the window
when RSP is not set up yet (same for MCE etc.)

-Andi
-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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