[PATCH] Documentation: document /proc api for arm64 MTE vm flags

Szabolcs Nagy <szabolcs.nagy@xxxxxxx> · Fri, 6 Nov 2020 10:19:40 +0000

Document that /proc/PID/smaps shows PROT_MTE settings in VmFlags.
Support for this was introduced in

  commit 9f3419315f3cdc41a7318e4d50ba18a592b30c8c
  arm64: mte: Add PROT_MTE support to mmap() and mprotect()

Signed-off-by: Szabolcs Nagy <szabolcs.nagy@xxxxxxx>
Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: linux-doc@xxxxxxxxxxxxxxx
---
 Documentation/filesystems/proc.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/filesystems/proc.rst b/Documentation/filesystems/proc.rst
index 533c79e8d2cd..e5fa972d4c76 100644
--- a/Documentation/filesystems/proc.rst
+++ b/Documentation/filesystems/proc.rst
@@ -546,6 +546,7 @@ encoded manner. The codes are the following:
     nh    no huge page advise flag
     mg    mergable advise flag
     bt    arm64 BTI guarded page
+    mt    arm64 MTE allocation tags are enabled
     ==    =======================================
 
 Note that there is no guarantee that every flag and associated mnemonic will
-- 
2.17.1







