Hi, Fedora received a bug report https://bugzilla.redhat.com/show_bug.cgi?id=1384238 of a bootup failure with stable 4.7.6. efi=noruntime fixed the bootup problem. 1297667083d5442aafe3e337b9413bf02b114edb was linked as the cause of the problem. x86/efi: Only map RAM into EFI page tables if in mixed-mode Waiman reported that booting with CONFIG_EFI_MIXED enabled on his multi-terabyte HP machine results in boot crashes, because the EFI region mapping functions loop forever while trying to map those regions describing RAM. While this patch doesn't fix the underlying hang, there's really no reason to map EFI_CONVENTIONAL_MEMORY regions into the EFI page tables when mixed-mode is not in use at runtime. Reported-by: Waiman Long <waiman.long@xxxxxxx> Cc: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> Cc: Borislav Petkov <bp@xxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> CC: Theodore Ts'o <tytso@xxxxxxx> Cc: Arnd Bergmann <arnd@xxxxxxxx> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Cc: Scott J Norton <scott.norton@xxxxxxx> Cc: Douglas Hatch <doug.hatch@xxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> # v4.6+ Signed-off-by: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx> I made a request in the bugzilla for the reporter to give a bootlog with efi=debug which I'm still waiting on. Any ideas? Thanks, Laura -- 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
