@@ -54,6 +54,24 @@ config KERNEL_ARM_PMU
default n
depends on (arm || aarch64)
+config KERNEL_X86_VSYSCALL_EMULATION
+ bool "Enable vsyscall emulation"
+ default n
+ depends on x86_64
+ help
+ This enables emulation of the legacy vsyscall page. Disabling
+ it is roughly equivalent to booting with vsyscall=none, except
+ that it will also disable the helpful warning if a program
+ tries to use a vsyscall. With this option set to N, offending
+ programs will just segfault, citing addresses of the form
+ 0xffffffffff600?00.
+
+ This option is required by many programs built before 2013, and
+ care should be used even with newer programs if set to N.
+
+ Disabling this option saves about 7K of kernel size and
+ possibly 4K of additional runtime pagetable memory.
+
config KERNEL_PERF_EVENTS
bool "Compile the kernel with performance events and counters"
default n
Binaries in container images may need this. E.g. nginx:1.7.9 used in k8s default deployment manifest file for demostration [1] [1] https://kubernetes.io/docs/concepts/workloads/controllers/deployment/#creating-a-deployment Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com> --- config/Config-kernel.in | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)