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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-11-16 09:27:13 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-11-16 09:27:13 -0800 |
| commit | 2ebc8ec86fe0f3f3acf9ba9b41a368f819e7807e (patch) | |
| tree | c0b3d4f14ae6dd98318d78fcf7d16f47954e06a4 /arch/s390/Kconfig.debug | |
| parent | df6e61d4ca268dc8706db38222fde9f04701566c (diff) | |
| parent | 89480801a17a3069f45169d40b828c8e511aa005 (diff) | |
| download | linux-2ebc8ec86fe0f3f3acf9ba9b41a368f819e7807e.tar.bz2 | |
Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] kprobes: Fix the return address of multiple kretprobes
[S390] kprobes: disable interrupts throughout
[S390] ftrace: build without frame pointers on s390
[S390] mm: add devmem_is_allowed() for STRICT_DEVMEM checking
[S390] vmlogrdr: purge after recording is switched off
[S390] cio: fix incorrect ccw_device_init_count
[S390] tape: add medium state notifications
[S390] fix get_user_pages_fast
Diffstat (limited to 'arch/s390/Kconfig.debug')
| -rw-r--r-- | arch/s390/Kconfig.debug | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/s390/Kconfig.debug b/arch/s390/Kconfig.debug index 45e0c6199f36..05221b13ffb1 100644 --- a/arch/s390/Kconfig.debug +++ b/arch/s390/Kconfig.debug @@ -6,6 +6,18 @@ config TRACE_IRQFLAGS_SUPPORT source "lib/Kconfig.debug" +config STRICT_DEVMEM + def_bool y + prompt "Filter access to /dev/mem" + ---help--- + This option restricts access to /dev/mem. If this option is + disabled, you allow userspace access to all memory, including + kernel and userspace memory. Accidental memory access is likely + to be disastrous. + Memory access is required for experts who want to debug the kernel. + + If you are unsure, say Y. + config DEBUG_STRICT_USER_COPY_CHECKS bool "Strict user copy size checks" ---help--- |