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-rw-r--r--arch/s390/Kconfig15
1 files changed, 0 insertions, 15 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 16c673096a22..c80235206c01 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -220,23 +220,8 @@ config AUDIT_ARCH
220 bool 220 bool
221 default y 221 default y
222 222
223config S390_SWITCH_AMODE
224 bool "Switch kernel/user addressing modes"
225 help
226 This option allows to switch the addressing modes of kernel and user
227 space. The kernel parameter switch_amode=on will enable this feature,
228 default is disabled. Enabling this (via kernel parameter) on machines
229 earlier than IBM System z9-109 EC/BC will reduce system performance.
230
231 Note that this option will also be selected by selecting the execute
232 protection option below. Enabling the execute protection via the
233 noexec kernel parameter will also switch the addressing modes,
234 independent of the switch_amode kernel parameter.
235
236
237config S390_EXEC_PROTECT 223config S390_EXEC_PROTECT
238 bool "Data execute protection" 224 bool "Data execute protection"
239 select S390_SWITCH_AMODE
240 help 225 help
241 This option allows to enable a buffer overflow protection for user 226 This option allows to enable a buffer overflow protection for user
242 space programs and it also selects the addressing mode option above. 227 space programs and it also selects the addressing mode option above.