Re: [PATCH v2 0/4] A new selftests/ directory for arm compatibility testing

[Will Deacon]

On Mon, Apr 22, 2024 at 12:37:13PM +0530, Dev Jain wrote:
> This series introduces the selftests/arm directory, which tests 32 and 64-bit
> kernel compatibility with 32-bit ELFs running on the Aarch platform.
> The need for this bucket of tests is that 32 bit applications built on legacy
> ARM architecture must not break on the new Aarch64 platforms and the 64-bit
> kernel. The kernel must emulate the data structures, system calls and the
> registers according to Aarch32, when running a 32-bit process; this directory
> fills that testing requirement.
> 
> One may find similarity between this directory and selftests/arm64; it is
> advisable to refer to that since a lot has been copied from there itself.

Isn't this going to be difficult to maintain if we have two divergent copies
of the same stuff? From a very quick skim, a bunch of the signals stuff is
idential to what we have on arm64...

Will