[kwlug-disc] Meltown fix for Linux kernel

[doug moen]

According to what I read, the performance impact occurs if you are
hammering the kernel with a lot of system calls. Eg, a server that is
performing a lot of I/o.

On Tuesday, 9 January 2018, Khalid Baheyeldin <kb at 2bits.com> wrote:

> I just received the email for the meltdown patch for Ubuntu Linux.
>
> CVE-2017-5754
>
> There are two concerns:
>
> 1. Performance impact.
>
> 2. This comment in the email:
>
> "ATTENTION: Due to an unavoidable ABI change the kernel updates have
> been given a new version number, which requires you to recompile and
> reinstall all third party kernel modules you might have installed.
> Unless you manually uninstalled the standard kernel metapackages
> (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
> linux-powerpc), a standard system upgrade will automatically perform
> this as well."
>
> Anyone updated to this fix yet?
> Any noticeable negative impact on performance?
>
> --
> Khalid M. Baheyeldin
> 2bits.com, Inc.
> Fast Reliable Drupal
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> For every complex problem, there is an answer that is clear, simple, and
> wrong." -- H.L. Mencken
>
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