Re: [RFC 05/10] x86/speculation: Add basic IBRS support infrastructure

[Borislav Petkov]

On Mon, Jan 22, 2018 at 10:51:53AM +0100, Peter Zijlstra wrote:
> That wouldn't be enough; AFAIU there's people with this stuff already
> flashed in their BIOS. So the kernel needs to deal with it one way or
> another.

Not a lot we can do there except maybe disable IBRS on those and users
can go and complain to their BIOS vendor to give them a downgrade or
they can downgrade themselves.

If we had free BIOS, this would've been a whole different story...

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    Boris.

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