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book3s64/radix : Handle error conditions properly in radix_vmemmap_populate

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Error conditions are not handled properly if altmap is not present
and PMD_SIZE vmemmap_alloc_block_buf fails.

In this patch, if vmemmap_alloc_block_buf fails in the non-altmap
case, we will fall back to the base mapping.

Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Donet Tom <donettom@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/7f95fe91c827a2fb76367a58dbea724e811fb152.1750593372.git.donettom@linux.ibm.com
This commit is contained in:
Donet Tom 2025-06-22 07:01:24 -05:00 committed by Madhavan Srinivasan
parent 41a1452759
commit 58450938f7
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/mm/book3s64/radix_pgtable.c
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@ -1173,7 +1173,7 @@ int __meminit radix__vmemmap_populate(unsigned long start, unsigned long end, in
vmemmap_set_pmd(pmd, p, node, addr, next);
pr_debug("PMD_SIZE vmemmap mapping\n");
continue;
} else if (altmap) {
} else {
/*
* A vmemmap block allocation can fail due to
* alignment requirements and we trying to align