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s390/vmem: align segment and region tables to 16k

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Usually segment and region tables are 16k aligned due to the way the
buddy allocator works.  This is not true for the vmem code which only
asks for a 4k alignment. In order to be consistent enforce a 16k
alignment here as well.

This alignment will be assumed and therefore is required by the
pageattr code.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2016-05-13 11:10:09 +02:00 committed by Martin Schwidefsky
parent 4ccccc522b
commit 2e9996fcf8
1 changed files with 3 additions and 1 deletions
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4
arch/s390/mm/vmem.c
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@ -29,9 +29,11 @@ static LIST_HEAD(mem_segs);
static void __ref *vmem_alloc_pages(unsigned int order)
{
unsigned long size = PAGE_SIZE << order;
if (slab_is_available())
return (void *)__get_free_pages(GFP_KERNEL, order);
return alloc_bootmem_pages((1 << order) * PAGE_SIZE);
return alloc_bootmem_align(size, size);
}
static inline pud_t *vmem_pud_alloc(void)