Re: [PATCH v10 2/3] mm: Fix OOM killer inaccuracy on large many-core systems

On Thu, Dec 18, 2025 at 05:18:04PM -0500, Mathieu Desnoyers wrote:

On 2025-12-18 13:00, Mark Brown wrote:

An ugly work-around that may work (and then we can improve on this),
at the end of mm/init-mm.c:init_mm (completely untested):

       .cpu_bitmap     = { [0 ... ((3*BITS_TO_LONGS(NR_CPUS))-1 + ((69905 * NR_MM_COUNTERS * 64) / BYTES_PER_LONG))] = 0UL },

That doesn't seem to fix the FVP unfortunately (BYTES_PER_LONG doesn't
exist, but even just deleting the division entirely fails in the same
way).