diff options
Diffstat (limited to 'Documentation/x86_64/boot-options.txt')
| -rw-r--r-- | Documentation/x86_64/boot-options.txt | 27 |
1 files changed, 10 insertions, 17 deletions
diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt index 0d653993f36..625a21db0c2 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. |