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| author |   Andi Kleen <ak@suse.de> | 2005-11-05 17:25:54 +0100 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-14 19:55:17 -0800 |
| commit | 9e43e1b7c7c9872da032442d8e4bb112a02d16f4 (patch) | |
| tree | 04399c723a8fbd3f859a462add5db34c389ebf45 /Documentation/x86_64 | |
| parent | [PATCH] x86_64: Make node boundaries consistent (diff) | |
| download | linux-dev-9e43e1b7c7c9872da032442d8e4bb112a02d16f4.tar.xz linux-dev-9e43e1b7c7c9872da032442d8e4bb112a02d16f4.zip | |
[PATCH] x86_64: Remove CONFIG_CHECKING and add command line option for pagefault tracing
CONFIG_CHECKING covered some debugging code used in the early times
of the port. But it wasn't even SMP safe for quite some time
and the bugs it checked for seem to be gone.
This patch removes all the code to verify GS at kernel entry. There
haven't been any new bugs in this area for a long time.
Previously it also covered the sysctl for the page fault tracing.
That didn't make much sense because that code was unconditionally
compiled in. I made that a boot option now because it is typically
only useful at boot.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/x86_64')
| -rw-r--r-- | Documentation/x86_64/boot-options.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt index aaabb5883ab8..e566affeed7f 100644 --- a/Documentation/x86_64/boot-options.txt +++ b/Documentation/x86_64/boot-options.txt @@ -193,6 +193,9 @@ Debugging kstack=N Print that many words from the kernel stack in oops dumps. + pagefaulttrace Dump all page faults. Only useful for extreme debugging + and will create a lot of output. + Misc noreplacement Don't replace instructions with more appropiate ones |