oss-sec mailing list archives

Re: Intel hyper-threading security issues


From: Lukas Odzioba <lukas.odzioba () gmail com>
Date: Thu, 21 Jun 2018 12:22:28 +0200

2018-06-21 11:37 GMT+02:00 Stuart Henderson <stu () spacehopper org>:
That isn't possible with some BIOS. For example, newer Lenovo machines
removed the option apparently due to perceived lack of demand...

If you feel like you really need that, on Linux you can dump SRAT ACPI
table decompile it, remove APICID entries of "ht processors", compile
it back and put into initrd.
https://www.kernel.org/doc/Documentation/acpi/initrd_table_override.txt

Thanks,
Lukas


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