[PATCH] lib/Kconfig.debug: Require a release version of LLVM 22 for context analysis

[Peter Zijlstra]

On Tue, Feb 24, 2026 at 04:16:30PM -0700, Nathan Chancellor wrote:
> Using a prerelease version as a minimum supported version for
> CONFIG_WARN_CONTEXT_ANALYSIS was reasonable to do while LLVM 22 was the
> development version so that people could immediately build from main and
> start testing and validating this in their own code. However, it can be
> problematic when using prerelease versions of LLVM 22, such as Android
> clang 22.0.1 (the current android mainline compiler) or when bisecting
> LLVM between llvmorg-22-init and llvmorg-23-init, to build the kernel,
> as all compiler fixes for the context analysis may not be present,
> potentially resulting in warnings that can easily turn into errors.
> 
> Now that LLVM 22 is released as 22.1.0, upgrade the check to require at
> least this version to ensure that a user's toolchain actually has all
> the changes needed for a smooth experience with context analysis.
> 
> Fixes: 3269701cb256 ("compiler-context-analysis: Add infrastructure for Context Analysis with Clang")
> Signed-off-by: Nathan Chancellor <nathan at kernel.org>
> ---
> Peter, could you take this for a 7.0-rc?

Yes, I can. I would however appreciate the Debian folks to quickly push
an update to the clang-22/experimental package. Otherwise I can't run
this fancy stuff myself no moar.