diff options
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 5c2ccb85f2ef..976dd6b532bf 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -269,6 +269,7 @@ config X86 select HAVE_ARCH_KCSAN if X86_64 select X86_FEATURE_NAMES if PROC_FS select PROC_PID_ARCH_STATUS if PROC_FS + select HAVE_ARCH_NODE_DEV_GROUP if X86_SGX imply IMA_SECURE_AND_OR_TRUSTED_BOOT if EFI config INSTRUCTION_DECODER @@ -472,6 +473,18 @@ config RETPOLINE branches. Requires a compiler with -mindirect-branch=thunk-extern support for full protection. The kernel may run slower. +config CC_HAS_SLS + def_bool $(cc-option,-mharden-sls=all) + +config SLS + bool "Mitigate Straight-Line-Speculation" + depends on CC_HAS_SLS && X86_64 + default n + help + Compile the kernel with straight-line-speculation options to guard + against straight line speculation. The kernel image might be slightly + larger. + config X86_CPU_RESCTRL bool "x86 CPU resource control support" depends on X86 && (CPU_SUP_INTEL || CPU_SUP_AMD) @@ -1523,16 +1536,20 @@ config X86_CPA_STATISTICS helps to determine the effectiveness of preserving large and huge page mappings when mapping protections are changed. +config X86_MEM_ENCRYPT + select ARCH_HAS_FORCE_DMA_UNENCRYPTED + select DYNAMIC_PHYSICAL_MASK + select ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS + def_bool n + config AMD_MEM_ENCRYPT bool "AMD Secure Memory Encryption (SME) support" depends on X86_64 && CPU_SUP_AMD select DMA_COHERENT_POOL - select DYNAMIC_PHYSICAL_MASK select ARCH_USE_MEMREMAP_PROT - select ARCH_HAS_FORCE_DMA_UNENCRYPTED select INSTRUCTION_DECODER - select ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS select ARCH_HAS_CC_PLATFORM + select X86_MEM_ENCRYPT help Say yes to enable support for the encryption of system memory. This requires an AMD processor that supports Secure Memory @@ -1917,6 +1934,7 @@ config X86_SGX select SRCU select MMU_NOTIFIER select NUMA_KEEP_MEMINFO if NUMA + select XARRAY_MULTI help Intel(R) Software Guard eXtensions (SGX) is a set of CPU instructions that can be used by applications to set aside private regions of code @@ -1946,7 +1964,7 @@ config EFI config EFI_STUB bool "EFI stub support" - depends on EFI && !X86_USE_3DNOW + depends on EFI depends on $(cc-option,-mabi=ms) || X86_32 select RELOCATABLE help |