Re: [PATCH] efi earlyprintk fix

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On 11/04/13 at 08:58pm, Dave Young wrote:
> On 11/04/13 at 10:37am, Matt Fleming wrote:
> > On Sun, 03 Nov, at 08:16:47PM, Dave Young wrote:
> > > 
> > > there's below one line shift problem:
> > > 
> > >                      ACPI=0xdabfe000  ACPI 2.0=0xdabfe014  SMBIOS=0xdaa9e000
> > > [    0.000000] efi:  
> > > 
> > > In fact check efi_y and the lfb_height should be compared at the begin of the
> > > loop of early_efi_write
> >  
> > Hmm... this is interesting. I can't produce this on any of my machines.
> > Where did you see this? What hardware?
> 
> It's my laptop Thinkpad T420, the screen scolls very fast, I use boot_delay=500
> to verify it with my patch for moving boot_delay param an early param.
> 
> Even without boot_delay, there's always a line at bottom with only the prefix:
> "efi:"

I will do further debug if I got time on this. It's really helpful for having efi
earlyprintk, thanks for your excellent idea of printing to efi fb!
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