Re: [PATCH v2] tools/testing/memblock: fix stale NUMA reservation tests

[Mike Rapoport <rppt@kernel.org>]

On Wed, Apr 15, 2026 at 12:27:31PM +0000, priyanshukumarpu@gmail.com wrote:
> From: Priyanshu Kumar <priyanshukumarpu@gmail.com>
> 
> memblock allocations now reserve memory with MEMBLOCK_RSRV_KERN and,
> on NUMA configurations, record the requested node on the reserved
> region. Several memblock simulator NUMA tests still expected merges
> that only worked before those reservation semantics changed, so the
> suite aborted even though the allocator behavior was correct.
> 
> Update the NUMA merge expectations in the memblock_alloc_try_nid()
> and memblock_alloc_exact_nid_raw() tests to match the current reserved
> region metadata rules. For cases that should still merge, create the
> pre-existing reservation with matching nid and MEMBLOCK_RSRV_KERN
> metadata. Also strengthen the memblock_alloc_node() coverage by
> checking the newly created reserved region directly instead of
> re-reading the source memory node descriptor.
> 
> Finally, drop the stale README/TODO notes that still claimed
> memblock_alloc_node() could not be tested.
> 
> The memblock simulator passes again with NUMA enabled after these
> updates.
> 
> Signed-off-by: Priyanshu Kumar <priyanshukumarpu@gmail.com>
> ---
>  tools/testing/memblock/README                 |  5 +----
>  tools/testing/memblock/TODO                   |  4 ++--
>  .../memblock/tests/alloc_exact_nid_api.c      |  6 +++---
>  tools/testing/memblock/tests/alloc_nid_api.c  | 21 +++++++++++++------
>  4 files changed, 21 insertions(+), 15 deletions(-)

I applied this while dropping the changes to alloc_node_on_correct_nid
test.

-- 
Sincerely yours,
Mike.