[PATCH v10 4/8] crash: Exclude crash kernel memory in crash core

[Catalin Marinas]

On Wed, Mar 25, 2026 at 10:59:00AM +0800, Jinjie Ruan wrote:
> The crash memory alloc, and the exclude of crashk_res, crashk_low_res
> and crashk_cma memory are almost identical across different architectures,
> handling them in the crash core would eliminate a lot of duplication, so
> do them in the common code.
> 
> To achieve the above goal, three architecture-specific functions are
> introduced:
> 
> - arch_get_system_nr_ranges(). Pre-counts the max number of memory ranges.
> 
> - arch_crash_populate_cmem(). Collects the memory ranges and fills them
>   into cmem.
> 
> - arch_crash_exclude_ranges(). Architecture's additional crash memory
>   ranges exclusion, defaulting to empty.
> 
> Reviewed-by: Sourabh Jain <sourabhjain at linux.ibm.com>
> Acked-by: Baoquan He <bhe at redhat.com>
> Acked-by: Mike Rapoport (Microsoft) <rppt at kernel.org>
> Signed-off-by: Jinjie Ruan <ruanjinjie at huawei.com>

For arm64:

Acked-by: Catalin Marinas <catalin.marinas at arm.com>