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authorSzabolcs Nagy <nsz@port70.net>2020-12-19 21:10:26 +0000
committerRich Felker <dalias@aerifal.cx>2021-02-15 09:16:06 -0500
commit19239cde94ff08c008b72f041676712dc447b80f (patch)
treeb1f65d81ff26db1d11f1ebb5cf60757971b9097b /include
parent8b29f02370cb3d789da4f57a1db726e5709fccde (diff)
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sys/prctl.h: add MTE related constants from linux v5.10
these are for the aarch64 MTE (memory tagging extension), see

  linux commit 1c101da8b971a36695319dce7a24711dc567a0dd
  arm64: mte: Allow user control of the tag check mode via prctl()

  linux commit af5ce95282dc99d08a27a407a02c763dde1c5558
  arm64: mte: Allow user control of the generated random tags via prctl()
Diffstat (limited to 'include')
-rw-r--r--include/sys/prctl.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/sys/prctl.h b/include/sys/prctl.h
index 4b9fcc05..4ba73f42 100644
--- a/include/sys/prctl.h
+++ b/include/sys/prctl.h
@@ -157,6 +157,13 @@ struct prctl_mm_map {
 #define PR_SET_TAGGED_ADDR_CTRL 55
 #define PR_GET_TAGGED_ADDR_CTRL 56
 #define PR_TAGGED_ADDR_ENABLE (1UL << 0)
+#define PR_MTE_TCF_SHIFT 1
+#define PR_MTE_TCF_NONE  (0UL << 1)
+#define PR_MTE_TCF_SYNC  (1UL << 1)
+#define PR_MTE_TCF_ASYNC (2UL << 1)
+#define PR_MTE_TCF_MASK  (3UL << 1)
+#define PR_MTE_TAG_SHIFT 3
+#define PR_MTE_TAG_MASK  (0xffffUL << 3)
 
 #define PR_SET_IO_FLUSHER 57
 #define PR_GET_IO_FLUSHER 58