linux-kernel - Re: Hang when booting guest kernels compiled with clang after SRSO mitigations

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Message-ID: <20230810133216.GKZNTm4KpohRR4gVsT@fat_crate.local>
Date:   Thu, 10 Aug 2023 15:32:16 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Nathan Chancellor <nathan@...nel.org>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: Hang when booting guest kernels compiled with clang after SRSO
 mitigations

On Thu, Aug 10, 2023 at 06:27:06AM -0700, Nathan Chancellor wrote:
> But my host kernel was compiled using GCC 13.2.0 from kernel.org for the
> sake of testing to see if the compiler used to build the host kernel had
> an impact on the problem and it did not.

Ok, now I'm confused.

Lemme see if I understand it correctly:

host kernel:
 - SRSO enabled
 - built with gcc

guest kernel:
 - built with clang
 - SRSO not necessary

Is that the scenario?

Anything else?

Thx.

-- 
Regards/Gruss,
    Boris.

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