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s390/sparsemem: Provide memory_add_physaddr_to_nid() with CONFIG_NUMA

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virtio-mem uses memory_add_physaddr_to_nid() to determine the NID to use
for memory it adds.

We currently fallback to the dummy implementation in mm/numa.c with
CONFIG_NUMA, which will end up triggering an undesired pr_info_once():

	Unknown online node for memory at 0x100000000, assuming node 0

On s390, we map all cpus and memory to node 0, so let's add a simple
memory_add_physaddr_to_nid() implementation that does exactly that,
but without complaining.

Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Tested-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Link: https://lore.kernel.org/r/20241025141453.1210600-8-david@redhat.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
David Hildenbrand
2024-10-25 16:14:52 +02:00
committed by Heiko Carstens
parent e3a6970b7d
commit 6e55421ea5
1 changed files with 8 additions and 0 deletions
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8
arch/s390/include/asm/sparsemem.h
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@@ -5,4 +5,12 @@
#define SECTION_SIZE_BITS 27
#define MAX_PHYSMEM_BITS CONFIG_MAX_PHYSMEM_BITS
#ifdef CONFIG_NUMA
static inline int memory_add_physaddr_to_nid(u64 addr)
{
return 0;
}
#define memory_add_physaddr_to_nid memory_add_physaddr_to_nid
#endif /* CONFIG_NUMA */
#endif /* _ASM_S390_SPARSEMEM_H */