On 06/22/2011 12:15 PM, Andi Kleen wrote: > On Wed, Jun 22, 2011 at 12:05:07PM -0700, H. Peter Anvin wrote: >> On 06/22/2011 11:56 AM, Andi Kleen wrote: >>> >>> You'll always have multiple ways. Whatever magic you come up for >>> the google BIOS or for EFI won't help the majority of users with >>> old crufty legacy BIOS. >>> >> >> I don't think this has anything to do with this. > > Please elaborate. > > How would you pass the bad page information instead in a fully backwards > compatible way? > Depends on what you mean with "fully backward compatible". In some ways this is a nonsense statement since if we create anything new older kernels will not run. However, the other discussions in this thread have been about injecting data in kernel-specific data structures and thus aren't dependent on the firmware layer used. The fully backward compatible way is "memmap=<address>$<length>". -hpa -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>