Mutliboot: Tumblweed grub doesn't boot arch 6.2.1 kernels? (kernel doesn't support EFI handover)

arvidjaar · March 2, 2023, 6:42am

Yes, it does.

archlinux/svntogit-packages/blob/d0200eb89ddd9dae4ba31754418acbb9671d2065/trunk/config#L490


      
          CONFIG_X86_UMIP=y
          CONFIG_CC_HAS_IBT=y
          CONFIG_X86_KERNEL_IBT=y
          CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS=y
          # CONFIG_X86_INTEL_TSX_MODE_OFF is not set
          # CONFIG_X86_INTEL_TSX_MODE_ON is not set
          CONFIG_X86_INTEL_TSX_MODE_AUTO=y
          CONFIG_X86_SGX=y
          CONFIG_EFI=y
          CONFIG_EFI_STUB=y
          # CONFIG_EFI_HANDOVER_PROTOCOL is not set
          CONFIG_EFI_MIXED=y
          # CONFIG_EFI_FAKE_MEMMAP is not set
          CONFIG_EFI_RUNTIME_MAP=y
          # CONFIG_HZ_100 is not set
          # CONFIG_HZ_250 is not set
          CONFIG_HZ_300=y
          # CONFIG_HZ_1000 is not set
          CONFIG_HZ=300
          CONFIG_SCHED_HRTICK=y
          CONFIG_KEXEC=y

More precisely - Arch is using almost pure upstream grub which does not use EFI handover protocol at all, so it is not affected. SUSE added grub patches to enable EFI handover. So, it is specific SUSE issue.