[kwlug-disc] Meltown fix for Linux kernel

[CrankyOldBugger]

If it makes you feel better, I heard today that Microsoft's patch has been
bricking the occasional AMD CPU..


On Tue, 9 Jan 2018 at 19:19 doug moen <doug at moens.org> wrote:

> 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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>>
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