Besides a printk() the main effect is slight corruption of the start info magic: While that's meant to be xen-3.0-x86_64, it wrongly ended up as xen-3.0-x86_64p.
Fixes: 460060f83d41 ("libelf: use for x86 dom0 builder") Signed-off-by: Jan Beulich <jbeul...@suse.com> --- RFC: While Linux works fine with the adjustment, I'm not entirely certain of external tools (kexec?) having grown a dependency. It may be worth noting that XenoLinux and its forward ports never had this ELF note in 64-bit kernels, so in principle it may be reasonable to expect that no such dependency exists anywhere. Prior to "x86/PV32: restore PAE-extended-CR3 logic" that (meaningless for 64-bit domains) VM-assist could also be enabled, based on the ELF note's value. I expect that change to go in first, at which point the description here is going to be correct. --- a/xen/arch/x86/pv/dom0_build.c +++ b/xen/arch/x86/pv/dom0_build.c @@ -459,8 +459,13 @@ int __init dom0_construct_pv(struct doma compat = is_pv_32bit_domain(d); if ( elf_64bit(&elf) && machine == EM_X86_64 ) + { compatible = true; + /* Zap meaningless setting which kernels may carry by mistake. */ + parms.pae = 0; + } + if ( elf_msb(&elf) ) compatible = false;