[android-developers] Re: protected mode?

The ARM processor family has one unprivileged user mode and six
privileged ones. In order for VIZIO's explanation to hold water,
someone would have to have written bad code for one of these modes,
almost certainly in the kernel.

Did VIZIO do their own build of Android and its kernel for this
tablet?

On Oct 28, 11:13 am, bob <b...@coolgroups.com> wrote:
> On the recent x86 desktop processor, protected mode is used to ensure
> processes don't jack with other processes' memory.  How does Android
> and the ARM processor typically handle this?
>
> One reason I'm wondering is because my VIZIO tablet got jacked up and
> required a factory reset.  I called VIZIO trying to figure out how
> this happened.  They claimed I probably downloaded a "bad app."  I
> don't see how the OS would permit a "bad app" to do that.

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