[SeaBIOS] [PATCH] qemu: handle e820 ram entries

Gerd Hoffmann kraxel at redhat.com
Mon Oct 14 14:22:15 CEST 2013


> > +                if (0x100000000LL + RamSizeOver4G < entry.address + entry.length)
> > +                    RamSizeOver4G = entry.address + entry.length - 0x100000000LL;
> it's all based on assumption that there is only one highmem entry,
> why don't take just entry.length then?

Would work today as entry.address will be 0x100000000LL at this point no
matter what.  But if that ever changes -- say due to qemu gaining
support for non-contigous memory -- things will break.  So we better
should do the math to be on the safe side for the future.


More information about the SeaBIOS mailing list