linux-kernel - Re: [regression/bisected] Add IBPB decreases performance in two times

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Message-ID: <20230813141945.GFZNjmgZbHvMhLYtJl@fat_crate.local>
Date:   Sun, 13 Aug 2023 16:19:45 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>
Cc:     Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
        x86@...nel.org
Subject: Re: [regression/bisected] Add IBPB decreases performance in two times

On Sun, Aug 13, 2023 at 04:38:59PM +0500, Mikhail Gavrilov wrote:
> Too sad, this means that others must also face this problem. And not
> everyone will know about a possible solution.

Nah, most people search the net and usually find the documentation, as
past experience shows. In this case, they will find:

https://kernel.org/doc/html/latest/admin-guide/hw-vuln/srso.html

It will be there next week but here's the source:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/admin-guide/hw-vuln/srso.rst

-- 
Regards/Gruss,
    Boris.

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