On Wed, Jun 19, 2013 at 06:38:04PM +0200, Borislav Petkov wrote: > On Wed, Jun 19, 2013 at 05:21:15PM +0100, Matthew Garrett wrote: > > Yes, kexec needs a different solution. > > No need. If we say, "efi=use_11_map", the 1:1 map will be shoved down > SetVirtualAddressMap. Otherwise the high mappings.
Ah, sure - if we're willing to take an argument then we can leave it at that. But having a stable set of high addresses for UEFI is also an option. > > Because firmware images don't always update all of the pointers, and > > so will crash if the 1:1 mappings aren't present. > > Ok, so it sounds like we want to *always* create both mappings but, > depending on what we want, to shove down SetVirtualAddressMap a > different set. And the 1:1 map will be the optional one which we give > SetVirtualAddressMap only when user wants it, i.e. when booting with > "efi=1:1_map". Yup, I think that sounds ideal. -- Matthew Garrett | [email protected] -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
