Messages in this thread | | | Subject | Re: tip/master falls off NOP cliff with KPTI under KVM | Date | Wed, 10 Jan 2018 22:53:43 +0000 | From | "Woodhouse, David" <> |
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On Thu, 2018-01-11 at 01:34 +0300, Alexey Dobriyan wrote: > > Bisection points to > > f3433c1010c6af61c9897f0f0447f81b991feac1 is the first bad commit > commit f3433c1010c6af61c9897f0f0447f81b991feac1 > Author: David Woodhouse <dwmw@amazon.co.uk> > Date: Tue Jan 9 14:43:11 2018 +0000 > > x86/retpoline/entry: Convert entry assembler indirect jumps
Thanks. We've fixed the underlying problem with the alternatives mechanism, *and* changed the retpoline code not to actually rely on said fix.
> RETPOLINE is enabled but build system is reporting that compiler doesn't > support it (Gentoo 6.4.0 p1.1) > > Disabling CONFIG_RETPOLINE fixes boot. > > And build system reports that "system may be insecure" even if RETPOLINE > is disabled.
That's odd. The warning is *inside* 'ifdef CONFIG_RETPOLINE'...[unhandled content-type:application/x-pkcs7-signature] | |