Re: [PATCH v8 03/12] x86/retpoline: Add initial retpoline support

[Borislav Petkov]

On Thu, Jan 11, 2018 at 09:46:25PM +0000, David Woodhouse wrote:
> +/*
> + * This should be used immediately before a retpoline alternative.  It tells
> + * objtool where the retpolines are so that it can make sense of the control
> + * flow by just reading the original instruction(s) and ignoring the
> + * alternatives.
> + */
> +.macro ANNOTATE_NOSPEC_ALTERNATIVE
> +	.Lannotate_\@:
> +	.pushsection .discard.nospec
> +	.long .Lannotate_\@ - .
> +	.popsection
> +.endm

Hey Josh, what happened to parsing only the retpoline-related
.altinstructions sections with the X86_FEATURE bits? Or is this
annotation used for something more additionally?

Thx.

-- 
Regards/Gruss,
    Boris.

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