On 05/29/14 at 02:10pm, Fleming, Matt wrote: > On 29 May 2014 13:59, Vivek Goyal <vgoyal@xxxxxxxxxx> wrote: > > > > Only second kernel boots with "noefi" and this parameter is appened by > > kexec-tools to second kernel command line. So first kernel will still > > boot *without noefi* and kexec-tools wil think that this system support > > booting second kernel with UEFI enabled. > > > > I don't know if we export /sys/firmware/efi/runtime-map/ in case of > > non 1:1 mapping or not. Dave and Boris will know better. > > Looking at the code the answer is: yes. I think that's the bug right there. > > By exporting entries in /sys/firmware/efi/runtime-map we're saying > "These mappings persist across kexec, you can trust that they won't > change", for SGI UV (which currently uses the quirk) or if you boot > with efi=old_map on the command line, that's simply not true. > > So, it would seem to me that we're missing a "if > (efi_enabled(OLD_MAP))" in drivers/firmware/efi/runtime-map.c. > Borislav, Dave? What do you guys think? Yes, I missed the old_map case when I did the patchset. Only exporting runtime map in case 1:1 map looks good. Thus kexec-tools can easily just check the existance of the sysfs files. Will send out a patch soon. Thanks Dave -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
