On 10/23/15 at 11:19am, Dave Young wrote: > Hi, Simon > > > > > > > > > Also, won't this affect other architectures that use DT. > > > I'm thinking about ARM. If so it might be good to tweak the changelog. > > > > arm also uses the function, but I need verify the behavior. Will tune the changelog > > after I confirming it. > > kexec on arm will have same problem when there's no external dtb being passed. > But kexec kernel failed to start up during my test there may be other problems. > > I will work out a new patch for new option about skip adding root= from 1st kernel. Simon, for the new option, I'm thinking to create a "--dt-no-old-root". It can be a general option, or arch dependent one for arm and ppc64. What do you prefer? Thanks Dave