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-rw-r--r--arch/arm64/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 9f99e045acbb..fdd9bbe2ad55 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1139,6 +1139,15 @@ config ARM64_SSBD
If unsure, say Y.
+config MITIGATE_SPECTRE_BRANCH_HISTORY
+ bool "Mitigate Spectre style attacks against branch history" if EXPERT
+ default y
+ help
+ Speculation attacks against some high-performance processors can
+ make use of branch history to influence future speculation.
+ When taking an exception from user-space, a sequence of branches
+ or a firmware call overwrites the branch history.
+
config RODATA_FULL_DEFAULT_ENABLED
bool "Apply r/o permissions of VM areas also to their linear aliases"
default y