diff mbox series

[v1,7/7] sh: mm: set VM_IOREMAP flag to the vmalloc area

Message ID 20221204013046.154960-8-bhe@redhat.com
State New
Headers
Series mm/vmalloc.c: allow vread() to read out vm_map_ram areas |

Commit Message

Baoquan He Dec. 4, 2022, 1:30 a.m. UTC 
  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.

Signed-off-by: Baoquan He <bhe@redhat.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-sh@vger.kernel.org (open list:SUPERH)
---
 arch/sh/kernel/cpu/sh4/sq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/sh/kernel/cpu/sh4/sq.c b/arch/sh/kernel/cpu/sh4/sq.c
index a76b94e41e91..27f2e3da5aa2 100644
--- a/arch/sh/kernel/cpu/sh4/sq.c
+++ b/arch/sh/kernel/cpu/sh4/sq.c
@@ -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;