Merge tag 'rfds-for-linus-2024-03-11' of git://git.kernel.org/pub/scm/linux/kernel...

[linux-block.git] / arch / x86 / Kconfig

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 8f7271d9f1d7808393437ccfbef4c03989e5e41d..77e8c8c67950441fac6368c833b951cd59e8bf01 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2623,6 +2623,17 @@ config MITIGATION_GDS_FORCE
 
          If in doubt, say N.
 
+config MITIGATION_RFDS
+       bool "RFDS Mitigation"
+       depends on CPU_SUP_INTEL
+       default y
+       help
+         Enable mitigation for Register File Data Sampling (RFDS) by default.
+         RFDS is a hardware vulnerability which affects Intel Atom CPUs. It
+         allows unprivileged speculative access to stale data previously
+         stored in floating point, vector and integer registers.
+         See also <file:Documentation/admin-guide/hw-vuln/reg-file-data-sampling.rst>
+
 endif
 
 config ARCH_HAS_ADD_PAGES