3 source "lib/Kconfig.debug"
6 bool "Export kernel pagetable layout to userspace via debugfs"
7 depends on DEBUG_KERNEL
10 Say Y here if you want to show the kernel pagetable layout in a
11 debugfs file. This information is only useful for kernel developers
12 who are working in architecture specific areas of the kernel.
13 It is probably not a good idea to enable this feature in a production
17 config PID_IN_CONTEXTIDR
18 bool "Write the current PID to the CONTEXTIDR register"
20 Enabling this option causes the kernel to write the current PID to
21 the CONTEXTIDR register, at the expense of some additional
22 instructions during context switch. Say Y here only if you are
23 planning to use hardware trace tools with this kernel.
25 config ARM64_RANDOMIZE_TEXT_OFFSET
26 bool "Randomize TEXT_OFFSET at build time"
28 Say Y here if you want the image load offset (AKA TEXT_OFFSET)
29 of the kernel to be randomized at build-time. When selected,
30 this option will cause TEXT_OFFSET to be randomized upon any
31 build of the kernel, and the offset will be reflected in the
32 text_offset field of the resulting Image. This can be used to
33 fuzz-test bootloaders which respect text_offset.
35 This option is intended for bootloader and/or kernel testing
36 only. Bootloaders must make no assumptions regarding the value
37 of TEXT_OFFSET and platforms must not require a specific
40 config DEBUG_SET_MODULE_RONX
41 bool "Set loadable kernel module data as NX and text as RO"
44 This option helps catch unintended modifications to loadable
45 kernel module's text and read-only data. It also prevents execution
46 of module data. Such protection may interfere with run-time code
47 patching and dynamic kernel tracing - and they might also protect
48 against certain classes of kernel exploits.
52 bool "Make kernel text and rodata read-only"
54 If this is set, kernel text and rodata will be made read-only. This
55 is to help catch accidental or malicious attempts to change the
56 kernel's executable code. Additionally splits rodata from kernel
57 text so it can be made explicitly non-executable.
61 config DEBUG_ALIGN_RODATA
62 depends on DEBUG_RODATA && ARM64_4K_PAGES
63 bool "Align linker sections up to SECTION_SIZE"
65 If this option is enabled, sections that may potentially be marked as
66 read only or non-executable will be aligned up to the section size of
67 the kernel. This prevents sections from being split into pages and
68 avoids a potential TLB penalty. The downside is an increase in
69 alignment and potentially wasted space. Turn on this option if
70 performance is more important than memory pressure.
74 source "drivers/hwtracing/coresight/Kconfig"