Problems with vmwarevga and graphical syslinux menus

Problems with vmwarevga and graphical syslinux menus

[Jeremy Katz]

The changes so that the vmwarevga code respects the E820 region runs
afoul of the fact that the VBE bios used has a hard-coded base address
for vesa modes.  Thus when syslinux uses VBE to do its graphical bits,
the lfb address doesn't match what the bios thinks it is :-/

Test case is any Fedora boot.iso or live CD from the past year or so.  

Jeremy


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Re: Problems with vmwarevga and graphical syslinux menus

[Anthony Liguori]

Jeremy Katz wrote:
> The changes so that the vmwarevga code respects the E820 region runs
> afoul of the fact that the VBE bios used has a hard-coded base address
> for vesa modes.  Thus when syslinux uses VBE to do its graphical bits,
> the lfb address doesn't match what the bios thinks it is :-/
>
> Test case is any Fedora boot.iso or live CD from the past year or so.  
>   

Unfortunately, setting the BAR registers doesn't work under KVM.  It 
works fine in QEMU so it's probably a KVM bug.  I'll look into it when I 
get a chance.

Regards,

Anthony Liguori

> Jeremy
>
>
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