diff options
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 44 |
1 files changed, 32 insertions, 12 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 7b071a00425d..aa7c1d435139 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -36,6 +36,7 @@ config ARM64 select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE select ARCH_HAS_PTE_DEVMAP select ARCH_HAS_PTE_SPECIAL + select ARCH_HAS_HW_PTE_YOUNG select ARCH_HAS_SETUP_DMA_OPS select ARCH_HAS_SET_DIRECT_MAP select ARCH_HAS_SET_MEMORY @@ -132,6 +133,7 @@ config ARM64 select GENERIC_ARCH_TOPOLOGY select GENERIC_CLOCKEVENTS_BROADCAST select GENERIC_CPU_AUTOPROBE + select GENERIC_CPU_DEVICES select GENERIC_CPU_VULNERABILITIES select GENERIC_EARLY_IOREMAP select GENERIC_IDLE_POLL_SETUP @@ -154,7 +156,7 @@ config ARM64 select HAVE_MOVE_PUD select HAVE_PCI select HAVE_ACPI_APEI if (ACPI && EFI) - select HAVE_ALIGNED_STRUCT_PAGE if SLUB + select HAVE_ALIGNED_STRUCT_PAGE select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_BITREVERSE select HAVE_ARCH_COMPILER_H @@ -1037,8 +1039,12 @@ config ARM64_ERRATUM_2645198 If unsure, say Y. +config ARM64_WORKAROUND_SPECULATIVE_UNPRIV_LOAD + bool + config ARM64_ERRATUM_2966298 bool "Cortex-A520: 2966298: workaround for speculatively executed unprivileged load" + select ARM64_WORKAROUND_SPECULATIVE_UNPRIV_LOAD default y help This option adds the workaround for ARM Cortex-A520 erratum 2966298. @@ -1050,6 +1056,20 @@ config ARM64_ERRATUM_2966298 If unsure, say Y. +config ARM64_ERRATUM_3117295 + bool "Cortex-A510: 3117295: workaround for speculatively executed unprivileged load" + select ARM64_WORKAROUND_SPECULATIVE_UNPRIV_LOAD + default y + help + This option adds the workaround for ARM Cortex-A510 erratum 3117295. + + On an affected Cortex-A510 core, a speculatively executed unprivileged + load might leak data from a privileged level via a cache side channel. + + Work around this problem by executing a TLBI before returning to EL0. + + If unsure, say Y. + config CAVIUM_ERRATUM_22375 bool "Cavium erratum 22375, 24313" default y @@ -1519,15 +1539,15 @@ config XEN # include/linux/mmzone.h requires the following to be true: # -# MAX_ORDER + PAGE_SHIFT <= SECTION_SIZE_BITS +# MAX_PAGE_ORDER + PAGE_SHIFT <= SECTION_SIZE_BITS # -# so the maximum value of MAX_ORDER is SECTION_SIZE_BITS - PAGE_SHIFT: +# so the maximum value of MAX_PAGE_ORDER is SECTION_SIZE_BITS - PAGE_SHIFT: # -# | SECTION_SIZE_BITS | PAGE_SHIFT | max MAX_ORDER | default MAX_ORDER | -# ----+-------------------+--------------+-----------------+--------------------+ -# 4K | 27 | 12 | 15 | 10 | -# 16K | 27 | 14 | 13 | 11 | -# 64K | 29 | 16 | 13 | 13 | +# | SECTION_SIZE_BITS | PAGE_SHIFT | max MAX_PAGE_ORDER | default MAX_PAGE_ORDER | +# ----+-------------------+--------------+----------------------+-------------------------+ +# 4K | 27 | 12 | 15 | 10 | +# 16K | 27 | 14 | 13 | 11 | +# 64K | 29 | 16 | 13 | 13 | config ARCH_FORCE_MAX_ORDER int default "13" if ARM64_64K_PAGES @@ -1535,21 +1555,21 @@ config ARCH_FORCE_MAX_ORDER default "10" help The kernel page allocator limits the size of maximal physically - contiguous allocations. The limit is called MAX_ORDER and it + contiguous allocations. The limit is called MAX_PAGE_ORDER and it defines the maximal power of two of number of pages that can be allocated as a single contiguous block. This option allows overriding the default setting when ability to allocate very large blocks of physically contiguous memory is required. The maximal size of allocation cannot exceed the size of the - section, so the value of MAX_ORDER should satisfy + section, so the value of MAX_PAGE_ORDER should satisfy - MAX_ORDER + PAGE_SHIFT <= SECTION_SIZE_BITS + MAX_PAGE_ORDER + PAGE_SHIFT <= SECTION_SIZE_BITS Don't change if unsure. config UNMAP_KERNEL_AT_EL0 - bool "Unmap kernel when running in userspace (aka \"KAISER\")" if EXPERT + bool "Unmap kernel when running in userspace (KPTI)" if EXPERT default y help Speculation attacks against some high-performance processors can |