Re: [PATCH RFC 01/35] mm: stop making SPARSEMEM_VMEMMAP user-selectable

2025-08-22 Thread SeongJae Park
On Thu, 21 Aug 2025 22:06:27 +0200 David Hildenbrand wrote: > In an ideal world, we wouldn't have to deal with SPARSEMEM without > SPARSEMEM_VMEMMAP, but in particular for 32bit SPARSEMEM_VMEMMAP is > considered too costly and consequently not supported. > > However, if an architecture does supp

Re: [PATCH RFC 01/35] mm: stop making SPARSEMEM_VMEMMAP user-selectable

2025-08-22 Thread Mike Rapoport
On Thu, Aug 21, 2025 at 10:06:27PM +0200, David Hildenbrand wrote: > In an ideal world, we wouldn't have to deal with SPARSEMEM without > SPARSEMEM_VMEMMAP, but in particular for 32bit SPARSEMEM_VMEMMAP is > considered too costly and consequently not supported. > > However, if an architecture does

Re: [PATCH RFC 01/35] mm: stop making SPARSEMEM_VMEMMAP user-selectable

2025-08-21 Thread Zi Yan
On 21 Aug 2025, at 16:06, David Hildenbrand wrote: > In an ideal world, we wouldn't have to deal with SPARSEMEM without > SPARSEMEM_VMEMMAP, but in particular for 32bit SPARSEMEM_VMEMMAP is > considered too costly and consequently not supported. > > However, if an architecture does support SPARSEM

[PATCH RFC 01/35] mm: stop making SPARSEMEM_VMEMMAP user-selectable

2025-08-21 Thread David Hildenbrand
In an ideal world, we wouldn't have to deal with SPARSEMEM without SPARSEMEM_VMEMMAP, but in particular for 32bit SPARSEMEM_VMEMMAP is considered too costly and consequently not supported. However, if an architecture does support SPARSEMEM with SPARSEMEM_VMEMMAP, let's forbid the user to disable V