Re: [RFC PATCH v2 2/6] x86/arch_prctl: add ARCH_GET_NOPTI and ARCH_SET_NOPTI to enable/disable PTI

[Borislav Petkov]

On Tue, Jan 09, 2018 at 01:26:57PM -0800, Andy Lutomirski wrote:
> 2.Turning off PTI is, in general, a terrible idea.  It totally breaks
> any semblance of a security model on a Meltdown-affected CPU.  So I
> think we should require CAP_SYS_RAWIO *and* that the system is booted
> with pti=allow_optout or something like that.

Uhh, I like that.

Maybe also taint the kernel ...

-- 
Regards/Gruss,
    Boris.

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