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sh: mm: set VM_IOREMAP flag to the vmalloc area

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Currently, for vmalloc areas with flag VM_IOREMAP set, except of the
specific alignment clamping in __get_vm_area_node(), they will be

1) Shown as ioremap in /proc/vmallocinfo;

2) Ignored by /proc/kcore reading via vread()

So for the ioremap in __sq_remap() of sh, we should set VM_IOREMAP in flag
to make it handled correctly as above.

Link: https://lkml.kernel.org/r/20230206084020.174506-8-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Lorenzo Stoakes <lstoakes@gmail.com>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Dan Carpenter <error27@gmail.com>
Cc: Stephen Brennan <stephen.s.brennan@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Baoquan He 2023-02-06 16:40:20 +08:00 committed by Andrew Morton
parent 728e5ae07d
commit 61a1a9906f
1 changed files with 1 additions and 1 deletions
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2
arch/sh/kernel/cpu/sh4/sq.c
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@ -103,7 +103,7 @@ static int __sq_remap(struct sq_mapping *map, pgprot_t prot)
#if defined(CONFIG_MMU)
struct vm_struct *vma;
vma = __get_vm_area_caller(map->size, VM_ALLOC, map->sq_addr,
vma = __get_vm_area_caller(map->size, VM_IOREMAP, map->sq_addr,
SQ_ADDRMAX, __builtin_return_address(0));
if (!vma)
return -ENOMEM;