Re: [PATCH v2 1/2] init, arch: make CONFIG_COMMAND_LINE_SIZE globally configurable

[sashiko-bot@kernel.org]

> Currently, s390 has the ability to configure the maximum kernel command
> line size via Kconfig (CONFIG_COMMAND_LINE_SIZE). Other architectures
> define a hardcoded COMMAND_LINE_SIZE macro in their setup.h headers.
> 
> In some use cases, such as netboot kernels, rootfs configurations, or
> larger initramfs setups, a larger command line size is required. While
> for embedded workloads, it can be reduced to save memory.
> 
> Move CONFIG_COMMAND_LINE_SIZE out of arch/s390/Kconfig and into
> init/Kconfig under General setup, and update every architecture's setup.h
> header to define COMMAND_LINE_SIZE as CONFIG_COMMAND_LINE_SIZE.
> 
> For user-space API (uapi) headers, wrap the definition in an
> `#ifdef __KERNEL__` guard and retain the historical hardcoded default in
> the `#else` block. When user-space headers are installed via
> [ ... ]
> architectures are capped at 4096 bytes to prevent unreasonable
> allocations.
> 
> Signed-off-by: Maciej Żenczykowski <maze@google.com>
> Signed-off-by: Wilson Felipe Pereira <wfelipe@google.com>

Sashiko has reviewed this patch and found no issues. It looks great!

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Sashiko AI review · https://sashiko.dev/#/patchset/20260818231646.804507-1-wfelipe@google.com?part=1