On Thu, 11 Jun 2015, Stéphane ancelot wrote: > Using a more recent system, I have following mistakes: > trying to patch a file not present in the kernel. > Sincerely, I do not understand what is the problem ! Ok. This is the last attempt to help you. I told you before, that: > > > > zcat ../patches-3.18.13-rt10.tar.gz |patch -p1 --dry-run > > > > > > You are trying to apply a tarball of patches instead of a single > > > combined patch. Use patch-3.18.13-rt10.patch.gz instead. https://www.kernel.org/pub/linux/kernel/projects/rt/3.18/patch-3.18.13-rt10.patch.gz This file can be applied with "patch -p1" after decompression. The tarball, which you are trying to use contains a series of patches and CANNOT be applied with patch. Thanks, tglx