On Thu, 13 Jan 2011 11:05:55 +0100, Patrick Georgi <[email protected]> wrote: > Hi, > > attached patch improves compatibility of YABEL with realmode execution > of the VGA BIOS by passing through access to IVT, BDA and option ROM > area directly, instead of copying them from the emulated memory to real > memory after initialization is done. > > Some VGA BIOSes seem to map hardware registers into the option ROM area, > so routing accesses to these into emulated RAM will lead to all kinds of > unexpected behaviour. > > The intent of YABEL in coreboot is to provide improved security by > isolating hardware access - this patch doesn't improve or degrade > security as the memory regions in question were already copied back > after emulation before this patch. > > > Signed-off-by: Patrick Georgi <[email protected]>
Nice work! Acked-by: Joseph Smith <[email protected]> -- Thanks, Joseph Smith Set-Top-Linux www.settoplinux.org -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
