Re: [Minios-devel] [UNIKRAFT PATCH 2/2] plat/kvm: Update VGA console cursor location

[Florian Schmidt <Florian.Schmidt@xxxxxxxxx>]

On 08/22/2018 12:01 PM, Simon Kuenzer wrote:
> So, I think we can make this happen by atomically copying the global 
> state (which is row, column) by interrupts off to local stack variables. 
> Then  we do all of our operations as normal (including scrolling in the 
> buffer) and save atomically the state again before exiting the function. 
> I think this is the best we can do for now, and - yes, this should be 
> fixed also on the other console implementations in a similar way.
Yes, that would solve the problem of writing outside the video memory. 
We could still have weird behaviors where one line overwrites the other, 
but this is probably at least a partially viable solution.
I'll do that for the v2.

Cheers,
Florian

--
Dr. Florian Schmidt
フローリアン・シュミット
Research Scientist,
Systems and Machine Learning Group
NEC Laboratories Europe
Kurfürsten-Anlage 36, D-69115 Heidelberg
Tel.     +49 (0)6221 4342-265
Fax:     +49 (0)6221 4342-155
e-mail:  florian.schmidt@xxxxxxxxx
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