title: Does a new kernel contain all patches with all the options
body: <p>Well, let's start with what I know.
  I know that I can apply a linux kernel patch to upgrade my current kernel version. let's say that I've a 4.2 version and I want to upgrade to 4.3 I can apply this patch:
  <a href="https://www.kernel.org/pub/linux/kernel/v4.x/patch-4.3.xz" rel="nofollow">https://www.kernel.org/pub/linux/kernel/v4.x/patch-4.3.xz</a></p>
  
  <p>Now let's say that I don't want that I want to install the 4.3 kernel(without patching my current one) I can do that by:
  <a href="https://www.kernel.org/pub/linux/kernel/v4.x/linux-4.3.tar.xz" rel="nofollow">https://www.kernel.org/pub/linux/kernel/v4.x/linux-4.3.tar.xz</a></p>
  
  <p>Now let's move on to what ruined my knowledge, while researching on how to make a linux kernel run in RealTime, I found that I need to apply this patch to the kernel that I downloaded:
  <a href="https://www.kernel.org/pub/linux/kernel/projects/rt/4.1/patch-4.1.15-rt17.patch.xz" rel="nofollow">https://www.kernel.org/pub/linux/kernel/projects/rt/4.1/patch-4.1.15-rt17.patch.xz</a></p>
  
  <p>My question here is: Does "linux-4.3.tar.xz" have RT support on no, to have it available I need to apply "patch-4.1.15-rt17.patch.xz" to any kernel that I want to be supporting RealTime feature  ?</p>
  
  <p>some Src: <a href="http://proaudio.tuxfamily.org/wiki/index.php?title=Realtime_(RT)_Kernel#Obtain_the_kernel-source_and_necessary_patches" rel="nofollow">http://proaudio.tuxfamily.org/wiki/index.php?title=Realtime_(RT)_Kernel#Obtain_the_kernel-source_and_necessary_patches</a></p>