From 0c031a29d33d13d9106746d61b87f9d98a80b5cd Mon Sep 17 00:00:00 2001 From: raja-grewal Date: Wed, 1 May 2024 13:55:09 +1000 Subject: [PATCH] RFDS mitigation on Intel Atom CPUs (including E-cores) --- etc/default/grub.d/40_cpu_mitigations.cfg | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/etc/default/grub.d/40_cpu_mitigations.cfg b/etc/default/grub.d/40_cpu_mitigations.cfg index 029db6d..aaefdaf 100644 --- a/etc/default/grub.d/40_cpu_mitigations.cfg +++ b/etc/default/grub.d/40_cpu_mitigations.cfg @@ -85,3 +85,9 @@ GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX retbleed=auto,nosmt" ## ## https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/gather_data_sampling.html GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX gather_data_sampling=force" + +## Register File Data Sampling (RFDS) mitigation on Intel Atom CPUs which +## encompasses E-cores on hybrid architectures. +## +## https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/reg-file-data-sampling.html +GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX reg_file_data_sampling=on"