Navigate to https://mirrors.edge.kernel.org/pub/linux/kernel/projects/rt/5.4/ (or, if you're on an alternate kernel, go to one directory level above this and select the required kernel version):
Figure 11.9 – Screenshot of the RTL patches for the 5.4 LTS Linux kernels
You will quickly notice that the RTL patches are available for only some versions of the kernel in question (here, 5.4.y); more on this follows. In the preceding screenshot, you can spot two broad types of patch files – interpret it as follows:
- patch-<kver>rt[nn].patch.[gz|xz]: The prefix is patch-; this is the complete collection of patches required to patch the mainline kernel (version <kver>) in one unified (and compressed) file.
- patches-<kver>-rt[nn].patch.[gz|xz]: The prefix is patches-; this compressed file contains every individual patch (as a separate file) that went into making up the patch series for this version...
