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-rw-r--r--Documentation/x86_64/boot-options.txt27
1 files changed, 10 insertions, 17 deletions
diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt
index 0d653993f361..625a21db0c2a 100644
--- a/Documentation/x86_64/boot-options.txt
+++ b/Documentation/x86_64/boot-options.txt
@@ -226,9 +226,9 @@ IOMMU (input/output memory management unit)
is 20.
memaper[=<order>] Allocate an own aperture over RAM with size 32MB<<order.
(default: order=1, i.e. 64MB)
- merge Do scather-gather (SG) merging. Implies "force"
+ merge Do scatter-gather (SG) merging. Implies "force"
(experimental).
- nomerge Don't do scather-gather (SG) merging.
+ nomerge Don't do scatter-gather (SG) merging.
noaperture Ask the IOMMU not to touch the aperture for AGP.
forcesac Force single-address cycle (SAC) mode for masks <40bits
(experimental).
@@ -275,14 +275,14 @@ IOMMU (input/output memory management unit)
Debugging
- oops=panic Always panic on oopses. Default is to just kill the process,
- but there is a small probability of deadlocking the machine.
- This will also cause panics on machine check exceptions.
- Useful together with panic=30 to trigger a reboot.
+ oops=panic Always panic on oopses. Default is to just kill the process,
+ but there is a small probability of deadlocking the machine.
+ This will also cause panics on machine check exceptions.
+ Useful together with panic=30 to trigger a reboot.
- kstack=N Print that many words from the kernel stack in oops dumps.
+ kstack=N Print N words from the kernel stack in oops dumps.
- pagefaulttrace Dump all page faults. Only useful for extreme debugging
+ pagefaulttrace Dump all page faults. Only useful for extreme debugging
and will create a lot of output.
call_trace=[old|both|newfallback|new]
@@ -292,15 +292,8 @@ Debugging
newfallback: use new unwinder but fall back to old if it gets
stuck (default)
- call_trace=[old|both|newfallback|new]
- old: use old inexact backtracer
- new: use new exact dwarf2 unwinder
- both: print entries from both
- newfallback: use new unwinder but fall back to old if it gets
- stuck (default)
-
-Misc
+Miscellaneous
noreplacement Don't replace instructions with more appropriate ones
for the CPU. This may be useful on asymmetric MP systems
- where some CPU have less capabilities than the others.
+ where some CPUs have less capabilities than others.