diff options
| author | David Kaplan <david.kaplan@amd.com> | 2025-07-07 13:32:58 -0500 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-07-11 17:56:40 +0200 |
| commit | 735e59204b5eb5aa55ba64be5d8ff4223b197816 (patch) | |
| tree | 13473cd449fb67e6be6cf3d0d30d411fbc62fb8c | |
| parent | 19c24f7ee39af503b9731067b91add627b70ecb6 (diff) | |
x86/Kconfig: Add arch attack vector support
ARCH_HAS_CPU_ATTACK_VECTORS should be set for architectures which implement
the new attack-vector based controls for CPU mitigations. If an arch does
not support attack-vector based controls then an attempt to use them
results in a warning.
Signed-off-by: David Kaplan <david.kaplan@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20250707183316.1349127-4-david.kaplan@amd.com
| -rw-r--r-- | arch/Kconfig | 3 | ||||
| -rw-r--r-- | arch/x86/Kconfig | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index a3308a220f86..7d8a4e7066a6 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -1763,4 +1763,7 @@ config ARCH_WANTS_PRE_LINK_VMLINUX An architecture can select this if it provides arch/<arch>/tools/Makefile with .arch.vmlinux.o target to be linked into vmlinux. +config ARCH_HAS_CPU_ATTACK_VECTORS + bool + endmenu diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 71dfe7d7c786..6c20adb0fe7c 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -75,6 +75,7 @@ config X86 select ARCH_ENABLE_SPLIT_PMD_PTLOCK if (PGTABLE_LEVELS > 2) && (X86_64 || X86_PAE) select ARCH_ENABLE_THP_MIGRATION if X86_64 && TRANSPARENT_HUGEPAGE select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI + select ARCH_HAS_CPU_ATTACK_VECTORS if CPU_MITIGATIONS select ARCH_HAS_CACHE_LINE_SIZE select ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION select ARCH_HAS_CPU_FINALIZE_INIT |