diff options
| author | Kevin Brodsky <kevin.brodsky@arm.com> | 2016-11-23 15:41:15 +0000 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2019-12-23 23:43:38 +0200 |
| commit | 1d89066ed9bece01582df8a41a14490cfd04239a (patch) | |
| tree | 23525a31cb84cbe7fb9dd5449035bf4e9a4412ee /arch/arm64/kernel/Makefile | |
| parent | eb5072c4c72f3fa68280bc726cd69e5ea592d6a5 (diff) | |
FROMLIST: [PATCH v2 3/3] arm64: compat: Add CONFIG_KUSER_HELPERS
(cherry picked from url http://lkml.iu.edu/hypermail/linux/kernel/1709.1/01903.html)
Make it possible to disable the kuser helpers by adding a KUSER_HELPERS
config option (enabled by default). When disabled, all kuser
helpers-related code is removed from the kernel and no mapping is done
at the fixed high address (0xffff0000); any attempt to use a kuser
helper from a 32-bit process will result in a segfault.
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Bug: 9674955
Bug: 63737556
Bug: 20045882
Change-Id: Ie8c543301d39bfe88ef71fb6a669e571914b117b
Diffstat (limited to 'arch/arm64/kernel/Makefile')
| -rw-r--r-- | arch/arm64/kernel/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index f60831160c57..89de53410f3a 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -28,7 +28,7 @@ $(obj)/%.stub.o: $(obj)/%.o FORCE arm64-obj-$(CONFIG_COMPAT) += sys32.o signal32.o \ sys_compat.o entry32.o arm64-obj-$(CONFIG_COMPAT) += sigreturn32.o -arm64-obj-$(CONFIG_COMPAT) += kuser32.o +arm64-obj-$(CONFIG_KUSER_HELPERS) += kuser32.o arm64-obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o arm64-obj-$(CONFIG_ARM64_MODULE_PLTS) += module-plts.o |