Re: Warning about kernel 4.2 performance (revised)

14.10.2015 22:10, Paul Crawford пишет:
> Hi Bart,
>> At least on Westmere+ CPUs (first gen Core i3/i5/i7) KVM can run
>> "unrestricted guest" mode which behaves like real mode and seems just
>> as fast as vm86() but it traps less than vm86 so some things that
>> dosemu depends upon (e.g. that INTs are trapped) do not work. That can
>> be worked around though with some more coding.
>
> In our case the ability to get hardware interrupts routed through to 
> the DOS emulator's code in a prompt manner is VERY important.
If you mean the hardware interrupts from real hardware
(rather than from the emulated hw), then the only way to
keep this alive is to write an UIO backend:
https://www.kernel.org/doc/htmldocs/uio-howto/about.html#how_uio_works
And that should be written by someone who at least has
the test case, which means you. :)
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