On Friday, August 11, 2017, Nicolas Pitre wrote: > This series brings a nice refresh to the cramfs filesystem, adding the > following capabilities: > > - Direct memory access, bypassing the block and/or MTD layers entirely. > > - Ability to store individual data blocks uncompressed. > > - Ability to locate individual data blocks anywhere in the filesystem. > > The end result is a very tight filesystem that can be accessed directly > from ROM without any other subsystem underneath. Also this allows for > user space XIP which is a very important feature for tiny embedded > systems.
I just applied the patches tried this simple test: - tested with a Renesas RZ/A1 (Cortex-A9...so it has an MMU). - I set the sticky bit for busybox before using mkcramfs - booted (with squashfs) and mounted the cramfs image - confirmed that the sticky bit was still set on busybox - was able to execute busybox in the cramfs image However, at this point I'm not sure how I can confirm that the XIP busybox actually executed as XIP or not. Chris
