diff options
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index a825bf031f49..53bab123a8ee 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -27,6 +27,7 @@ config X86_64 # Options that are inherently 64-bit kernel only: select ARCH_HAS_GIGANTIC_PAGE select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 + select ARCH_SUPPORTS_PER_VMA_LOCK select ARCH_USE_CMPXCHG_LOCKREF select HAVE_ARCH_SOFT_DIRTY select MODULES_USE_ELF_RELA @@ -125,8 +126,8 @@ config X86 select ARCH_WANTS_NO_INSTR select ARCH_WANT_GENERAL_HUGETLB select ARCH_WANT_HUGE_PMD_SHARE - select ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP if X86_64 select ARCH_WANT_LD_ORPHAN_WARN + select ARCH_WANT_OPTIMIZE_VMEMMAP if X86_64 select ARCH_WANTS_THP_SWAP if X86_64 select ARCH_HAS_PARANOID_L1D_FLUSH select BUILDTIME_TABLE_SORT @@ -162,6 +163,7 @@ config X86 select GUP_GET_PXX_LOW_HIGH if X86_PAE select HARDIRQS_SW_RESEND select HARDLOCKUP_CHECK_TIMESTAMP if X86_64 + select HAS_IOPORT select HAVE_ACPI_APEI if ACPI select HAVE_ACPI_APEI_NMI if ACPI select HAVE_ALIGNED_STRUCT_PAGE if SLUB @@ -283,7 +285,6 @@ config X86 select RTC_LIB select RTC_MC146818_LIB select SPARSE_IRQ - select SRCU select SYSCTL_EXCEPTION_TRACE select THREAD_INFO_IN_TASK select TRACE_IRQFLAGS_SUPPORT @@ -434,7 +435,7 @@ config SMP Y to "Enhanced Real Time Clock Support", below. The "Advanced Power Management" code will be disabled if you say Y here. - See also <file:Documentation/x86/i386/IO-APIC.rst>, + See also <file:Documentation/arch/x86/i386/IO-APIC.rst>, <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO available at <http://www.tldp.org/docs.html#howto>. @@ -1324,7 +1325,7 @@ config MICROCODE the Linux kernel. The preferred method to load microcode from a detached initrd is described - in Documentation/x86/microcode.rst. For that you need to enable + in Documentation/arch/x86/microcode.rst. For that you need to enable CONFIG_BLK_DEV_INITRD in order for the loader to be able to scan the initrd for microcode blobs. @@ -1510,7 +1511,7 @@ config X86_5LEVEL A kernel with the option enabled can be booted on machines that support 4- or 5-level paging. - See Documentation/x86/x86_64/5level-paging.rst for more + See Documentation/arch/x86/x86_64/5level-paging.rst for more information. Say N if unsure. @@ -1774,7 +1775,7 @@ config MTRR You can safely say Y even if your machine doesn't have MTRRs, you'll just add about 9 KB to your kernel. - See <file:Documentation/x86/mtrr.rst> for more information. + See <file:Documentation/arch/x86/mtrr.rst> for more information. config MTRR_SANITIZER def_bool y @@ -1938,7 +1939,6 @@ config X86_SGX depends on X86_64 && CPU_SUP_INTEL && X86_X2APIC depends on CRYPTO=y depends on CRYPTO_SHA256=y - select SRCU select MMU_NOTIFIER select NUMA_KEEP_MEMINFO if NUMA select XARRAY_MULTI @@ -2290,6 +2290,17 @@ config RANDOMIZE_MEMORY_PHYSICAL_PADDING If unsure, leave at the default value. +config ADDRESS_MASKING + bool "Linear Address Masking support" + depends on X86_64 + help + Linear Address Masking (LAM) modifies the checking that is applied + to 64-bit linear addresses, allowing software to use of the + untranslated address bits for metadata. + + The capability can be used for efficient address sanitizers (ASAN) + implementation and for optimizations in JITs. + config HOTPLUG_CPU def_bool y depends on SMP @@ -2551,7 +2562,7 @@ config PAGE_TABLE_ISOLATION ensuring that the majority of kernel addresses are not mapped into userspace. - See Documentation/x86/pti.rst for more details. + See Documentation/arch/x86/pti.rst for more details. config RETPOLINE bool "Avoid speculative indirect branches in kernel" |