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| author | Gary S. Robertson <gary.robertson@linaro.org> | 2016-01-20 15:36:59 -0600 |
|---|---|---|
| committer | Gary S. Robertson <gary.robertson@linaro.org> | 2016-01-20 15:36:59 -0600 |
| commit | 370e05d463d66eaada3b4bb9266f019563920eb0 (patch) | |
| tree | 348834a36436338eea1e9f17f1823cae213f92fc /arch/arm64/Kconfig | |
| parent | f93328edc6d139b9b1b5ed6944f7b80b8699cdf7 (diff) | |
| parent | 906d9eadd3b6698fa6ceb9bcdf41da6aa56d0a24 (diff) | |
Merge tag 'lsk-v4.1-15.12-rt' of http://git.linaro.org/kernel/linux-linaro-stable into linux-linaro-lng-v4.1-rtlinux-lng-preempt-rt-4.1.14-2016.03linux-lng-preempt-rt-4.1.14-2016.02linux-lng-preempt-rt-4.1.14-2016.01linux-linaro-lng-v4.1-rt
LSK RT 15.12 v4.1
Conflicts:
linaro/configs/linaro-base.conf
linaro/configs/preempt-rt.conf
linaro/configs/vexpress64.conf
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index d555ed3a0433..caa0556de363 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -103,6 +103,10 @@ config NO_IOPORT_MAP config STACKTRACE_SUPPORT def_bool y +config ILLEGAL_POINTER_VALUE + hex + default 0xdead000000000000 + config LOCKDEP_SUPPORT def_bool y @@ -411,6 +415,22 @@ config ARM64_ERRATUM_845719 If unsure, say Y. +config ARM64_ERRATUM_843419 + bool "Cortex-A53: 843419: A load or store might access an incorrect address" + depends on MODULES + default y + help + This option builds kernel modules using the large memory model in + order to avoid the use of the ADRP instruction, which can cause + a subsequent memory access to use an incorrect address on Cortex-A53 + parts up to r0p4. + + Note that the kernel itself must be linked with a version of ld + which fixes potentially affected ADRP instructions through the + use of veneers. + + If unsure, say Y. + endmenu @@ -581,7 +601,7 @@ config XEN_DOM0 config XEN bool "Xen guest support on ARM64" - depends on ARM64 && OF + depends on ARM64 && OF && !PREEMPT_RT_FULL select SWIOTLB_XEN help Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64. @@ -591,6 +611,20 @@ config FORCE_MAX_ZONEORDER default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE) default "11" +config ARM64_PAN + bool "Enable support for Privileged Access Never (PAN)" + default y + help + Privileged Access Never (PAN; part of the ARMv8.1 Extensions) + prevents the kernel or hypervisor from accessing user-space (EL0) + memory directly. + + Choosing this option will cause any unprotected (not using + copy_to_user et al) memory access to fail with a permission fault. + + The feature is detected at runtime, and will remain as a 'nop' + instruction if the cpu does not implement the feature. + menuconfig ARMV8_DEPRECATED bool "Emulate deprecated/obsolete ARMv8 instructions" depends on COMPAT |