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Date:   Thu, 28 Jul 2022 14:35:48 +0200
From:   Borislav Petkov <bp@alien8.de>
To:     Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Cc:     linux-kernel@vger.kernel.org, x86@kernel.org,
        Dimitri John Ledkov <dimitri.ledkov@canonical.com>,
        Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH] x86/bugs: Do not enable IBPB at firmware entry when IBPB
 is not available
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drop stable@

On Thu, Jul 28, 2022 at 09:26:02AM -0300, Thadeu Lima de Souza Cascardo wrote:
> Some cloud hypervisors do not provide IBPB on very recent CPU processors,
> including AMD processors affected by Retbleed.

Which hypervisors are those? How relevant is that use case?

How do I reproduce it here?

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette