[PATCH 13/27] mm: export access_remote_vm symbol for debugger use

[Mika Kuoppala <mika.kuoppala@linux.intel.com>]

Export access_remote_vm as GPL symbol to allow debuggers (eudebug)
to access and modify memory in target VMs by tracking VM_BIND
operations. While access_process_vm() is already exported, it would
require maintaining task references in the debugger.

Since the mm reference is already present in the userptr's mm notifier
implementation, exporting access_remote_vm allows that existing reference
to be used directly without needing to obtain and maintain additional
task references just for memory access.

Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Simona Vetter <simona@ffwll.ch>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
---
 mm/memory.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/memory.c b/mm/memory.c
index 398c031be9ba..9b7c71c83db5 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -6690,6 +6690,7 @@ int access_remote_vm(struct mm_struct *mm, unsigned long addr,
 {
 	return __access_remote_vm(mm, addr, buf, len, gup_flags);
 }
+EXPORT_SYMBOL_GPL(access_remote_vm);
 
 /*
  * Access another process' address space.
-- 
2.43.0