docs: stable-ABI: Document /sys/kernel/notes

Document the notes file in sysfs as the running vmlinux's .note section in binary format. Hopefully this helps someone like me realize the kernel exposes the note section in sysfs in the future. Take the date from when the file was introduced. It's been a while so presumably this is stable and not testing material. Signed-off-by: Stephen Boyd <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jonathan Corbet <[email protected]>
fracktal · Sep 16, 2020 · b854e83 · b854e83
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+What:		/sys/kernel/notes
+Date:		July 2009
+Contact:	<[email protected]>
+Description:	The /sys/kernel/notes file contains the binary representation
+		of the running vmlinux's .notes section.