WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] Re: [PATCH][RFC] gfx_passthru: warning when vgabios rom

Weidong Han writes ("Re: [Xen-devel] Re: [PATCH][RFC] gfx_passthru: warning 
when vgabios rom has invalid checksum"):
> Now I understand. Because your Q35 works with recalculated checksum, I 
> prefer to only add a warning message, and continue to load rom for gfx 
> passthru.

Having read this thread I'm still a bit confused.  The problem is that
the VGA BIOS on the graphics card is broken and has a broken checksum,
and the proposed workaround is to recalculate the checksum for the
benefit of the guest ?

Does this incorrectly checksummed BIOS work natively (ie without
passthrough) and if so why is passthrough different ?  Alternatively
if it doesn't work native why are we trying to make it work with
passthrough ?

On another level, Weidong, are you suggesting you'd like to see Noboru
produce a different patch which just produces a warning ?

Thanks,
Ian.

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel