[Ksummit-discuss] Fwd: [TECH TOPIC] QR encoded oops for the kernel

[Levente Kurusa]

Hi,

On Thu, May 15, 2014 at 12:18:27PM -0700, H. Peter Anvin wrote:
> On 05/14/2014 11:54 AM, Josh Triplett wrote:
> > 
> > That's certainly true.  On the other hand, I'd really like to see a
> > version of the oops-as-QR-code bits that uses VGA block characters to
> > work in non-graphics, non-framebuffer mode, which would require fitting
> > in at most 80x50 (using the half-block characters).  That wouldn't allow
> > nearly as much data, but likely enough for a somewhat useful crash
> > report, especially in aggregate.
> > 
> 
> Now we're getting into a funny area, which is "what is the lowest common
> denominator".  If the lowest common denominator is VGA, a simple VGA
> driver could force the screen to 640x480 graphics mode, or reprogram the
> font to allow for an 160x100 pixel pseudographic mode (more if we allow
> the font size to be adjusted).  It is not at all clear that using IBM
> pseudographics with no other programming is a useful point on that spectrum.
> 
> Either way, this is *way* past turning into a technical conversation,
> and belongs on LKML and not ksummit-discuss.
> 

Right, I'll write up what technical stuff we discussed here and post
it on LKML in the RFC thread so we can get rid of the tech discussions
here.

Thanks,
    Levente Kurusa
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