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| author | Ingo Molnar <mingo@elte.hu> | 2008-10-28 18:26:12 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-28 18:26:12 +0300 |
| commit | 7a9787e1eba95a166265e6a260cf30af04ef0a99 (patch) | |
| tree | e730a4565e0318140d2fbd2f0415d18a339d7336 /arch/x86/Kconfig.debug | |
| parent | 41b9eb264c8407655db57b60b4457fe1b2ec9977 (diff) | |
| parent | 0173a3265b228da319ceb9c1ec6a5682fd1b2d92 (diff) | |
| download | linux-7a9787e1eba95a166265e6a260cf30af04ef0a99.tar.xz | |
Merge commit 'v2.6.28-rc2' into x86/pci-ioapic-boot-irq-quirks
Diffstat (limited to 'arch/x86/Kconfig.debug')
| -rw-r--r-- | arch/x86/Kconfig.debug | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug index ae36bfa814e5..2a3dfbd5e677 100644 --- a/arch/x86/Kconfig.debug +++ b/arch/x86/Kconfig.debug @@ -5,13 +5,15 @@ config TRACE_IRQFLAGS_SUPPORT source "lib/Kconfig.debug" -config NONPROMISC_DEVMEM +config STRICT_DEVMEM bool "Filter access to /dev/mem" help - If this option is left off, you allow userspace access to all + If this option is disabled, you allow userspace (root) 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. + be used by people debugging the kernel. Note that with PAT support + enabled, even in this case there are restrictions on /dev/mem + use due to the cache aliasing requirements. If this option is switched on, the /dev/mem file only allows userspace access to PCI space and the BIOS code and data regions. @@ -41,6 +43,19 @@ config EARLY_PRINTK with klogd/syslogd or the X server. You should normally N here, unless you want to debug such a crash. +config EARLY_PRINTK_DBGP + bool "Early printk via EHCI debug port" + default n + depends on EARLY_PRINTK && PCI + help + Write kernel log output directly into the EHCI debug port. + + This is useful for kernel debugging when your machine crashes very + early before the console code is initialized. For normal operation + it is not recommended because it looks ugly and doesn't cooperate + with klogd/syslogd or the X server. You should normally N here, + unless you want to debug such a crash. You need usb debug device. + config DEBUG_STACKOVERFLOW bool "Check for stack overflows" depends on DEBUG_KERNEL @@ -287,7 +302,6 @@ config CPA_DEBUG config OPTIMIZE_INLINING bool "Allow gcc to uninline functions marked 'inline'" - depends on BROKEN help This option determines if the kernel forces gcc to inline the functions developers have marked 'inline'. Doing so takes away freedom from gcc to @@ -298,5 +312,7 @@ config OPTIMIZE_INLINING become the default in the future, until then this option is there to test gcc for this. + If unsure, say N. + endmenu |