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| author | Ingo Molnar <mingo@elte.hu> | 2008-06-25 12:27:29 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-25 12:27:29 +0200 |
| commit | 5ce001b0e56638c726270d4f9e05d46d4250dfbb (patch) | |
| tree | c21cf007ddef99d5e8b23dde9621bd9152e676a8 /arch/x86/Kconfig.debug | |
| parent | stackprotector: use canary at end of stack to indicate overruns at oops time (diff) | |
| parent | Linux 2.6.26-rc8 (diff) | |
| download | linux-5ce001b0e56638c726270d4f9e05d46d4250dfbb.tar.xz linux-5ce001b0e56638c726270d4f9e05d46d4250dfbb.zip | |
Merge branch 'linus' into stackprotector
Diffstat (limited to 'arch/x86/Kconfig.debug')
| -rw-r--r-- | arch/x86/Kconfig.debug | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug index b5c5b55d0437..a8d3c7e0414a 100644 --- a/arch/x86/Kconfig.debug +++ b/arch/x86/Kconfig.debug @@ -6,15 +6,19 @@ config TRACE_IRQFLAGS_SUPPORT source "lib/Kconfig.debug" config NONPROMISC_DEVMEM - bool "Disable promiscuous /dev/mem" + bool "Filter access to /dev/mem" help - The /dev/mem file by default only allows userspace access to PCI - space and the BIOS code and data regions. This is sufficient for - dosemu and X and all common users of /dev/mem. With this config - option, you allow userspace access to all of memory, including - kernel and userspace memory. Accidental access to this is - obviously disasterous, but specific access can be used by people - debugging the kernel. + If this option is left off, you allow userspace access to all + of memory, including kernel and userspace memory. Accidental + access to this is obviously disastrous, but specific access can + be used by people debugging the kernel. + + If this option is switched on, the /dev/mem file only allows + userspace access to PCI space and the BIOS code and data regions. + This is sufficient for dosemu and X and all common users of + /dev/mem. + + If in doubt, say Y. config EARLY_PRINTK bool "Early printk" if EMBEDDED |