Re: [RFC][PATCH 06/17] x86/cpu: Add SRSO untrain to retbleed=

From: Borislav Petkov
Date: Thu Aug 10 2023 - 11:44:23 EST


On Wed, Aug 09, 2023 at 09:12:24AM +0200, Peter Zijlstra wrote:
> Since it is now readily apparent that the two SRSO
> untrain_ret+return_thunk variants are exactly the same mechanism as
> the existing (retbleed) zen untrain_ret+return_thunk, add them to the
> existing retbleed options.

Except that Zen3/4 are not affected by retbleed, according to my current
state of information.

I don't like this lumping together of the issues even if their
mitigations are more or less similar.

--
Regards/Gruss,
Boris.

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