Re: [Qemu-devel] Re: [PATCH] Reboot CPU on triple fault

[Jamie Lokier]

Kevin Wolf wrote:
> > IMHO There's no reason to print a message to stderr. This is all
> > well defined behavior, and the accepted way of exiting from 286
> > protected mode.
> 
> How many users does qemu have who need triple faults to exit from 286
> Protected Mode?

Not many, only those users running old MS-DOS apps / OSes.

> And how many users does it have who don't use triple
> faults (yes, it's called a fault, not a PM exiting feature)

Faults don't mean errors.  Think about page faults.

> And honestly, a message on stderr really shouldn't hurt those 286 folks.

For old MS-DOS apps / OSes, I have the impression this can happen
hundreds of times per second.  It's part of task context switching and
BIOS calls.

-- Jamie