Re: [PATCH v2] mm/hugetlb: allow crashkernel to reuse hugetlb CMA memory

[Mike Rapoport]

On Fri, 06 Nov 2026 08:51:42 -0800, Usama Arif <usama.arif@xxxxxxxxx> wrote:
> crashkernel=size,cma reserves a separate CMA pool. On systems that
> already reserve several gigabytes with hugetlb_cma= (which is common in
> the Meta fleet), the crash kernel cannot use that existing memory as
> part of its working set. With hugetlb_cma=6G, requesting another 2G
> with crashkernel=2G,cma brings the total CMA reservation to 8G, none of
> which can serve unmovable kernel allocations.
> 
> [...]

Acked-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>

-- 
Sincerely yours,
Mike.