Re: Huge Intel CPU Bug Allegedly Causes Kernel Memory Vulnerability With Up To 30% Performance Hit
oh crud. there goes playing games on this laptop. 30% loss where it
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On Thu, Jan 4, 2018 at 4:20 AM, Pavel Alyev <aliech@aliech.ru> wrote:
>
> It's main reason why coreboot developers recommend to include LATEST
> microcode patch in build of BIOS image.
>
> And if this can't be fixed... Nothing happened. There is many bugs in CPUs.
> And kernel have workarounds for this. Look on non x86 sources. Look on huge
> errata's lists of ARM, for example. It's normal practice.
>
>
> 03.01.2018 13:43, Vincent Deffontaines пишет:
>
>> Greetings,
>>
>> And happy new year.
>>
>> This is hitting all of us soon.
>> In short : a huge (and long lasting) hardware bug, present in about all
>> Intel CPUs that have been sold for the last 10 years.
>> It is not fixable by microcode, and requires ugly patching from the kernel
>> layer. Other OSes such as Microsoft are concerned as well.
>>
>> Nice overview of the thing :
>>
>> https://hothardware.com/news/intel-cpu-bug-kernel-memory-isolation-linux-windows-macos
>>
>> More detail :
>>
>> http://pythonsweetness.tumblr.com/post/169166980422/the-mysterious-case-of-the-linux-page-table
>>
>> Linus' patch :
>>
>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5aa90a84589282b87666f92b6c3c917c8080a9bf
>>
>>
>> Vincent Deffontaines
>>
>
> --
> With best regards
>
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