linux-kernel - Re: Requirements for retpoline in Linux 4.15 (was: Re: Linux 4.15)

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Message-ID: <5326624.8I3Ve3uUFt@merkaba>
Date:   Mon, 29 Jan 2018 11:42:53 +0100
From:   Martin Steigerwald <martin@...htvoll.de>
To:     David Woodhouse <dwmw2@...radead.org>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Requirements for retpoline in Linux 4.15 (was: Re: Linux 4.15)

David Woodhouse - 29.01.18, 10:53:
> On Mon, 2018-01-29 at 10:41 +0100, Martin Steigerwald wrote:
> > From what I read gcc 7.3 was supposed to include back ported retpoline 
> > patches. What am I missing here?
> 
> Which did you update first? Kernel source or GCC?

Kernel source is existing git repo I just "git pull" from and I did not do any 
"make clean" or "make-kpkg clean" on it before. And as it builds inside that 
repo…

> Try removing .cache.mk which has 'remembered' that your GCC doesn't
> support retpoline.

I bet there have been "*.cache.mk" files around from previous pre gcc-7.3 
compiles.

Trying again after

% find -name ".cache.mk" -delete

on kernel source tree.

Will report back.

Thanks,
-- 
Martin