[vbox-dev] Expert options
klaus.espenlaub at oracle.com
Wed Aug 19 13:23:29 UTC 2015
On 17.08.2015 15:09, Mario Lobo wrote:
> When typing VirtualBox --help, it prints these:
> Expert options:
> --disable-patm disable code patching (ignored by
> --disable-csam disable code scanning (ignored
> by AMD-V/VT-x)
> --recompile-supervisor recompiled execution of
> supervisor code (*)
> --recompile-user recompiled execution of
> user code (*)
> --recompile-all recompiled execution of all
> code, with disabled code patching and scanning
> --execute-all-in-iem For debugging the interpreted execution
> --warp-pct <pct> time warp factor, 100% (= 1.0) =
> normal speed
> (*) For AMD-V/VT-x setups the effect is --recompile-all.
> I tried to find documentation for them but I couldn't. Nor there are
> any explanations on the User Manual.
Why should they be documented in detail? Even power users don't need
them. In fact many of these options cause severe performance reduction
or even non-working VMs.
> Could anybody point to an elaborate doc on them or what exactly do
> they do?
They're meant for developers who need to debug something in the software
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