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-rw-r--r--sys/arm64/include/pte.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/arm64/include/pte.h b/sys/arm64/include/pte.h
index c447dc1..2b694a6 100644
--- a/sys/arm64/include/pte.h
+++ b/sys/arm64/include/pte.h
@@ -49,6 +49,10 @@ typedef uint64_t pt_entry_t; /* page table entry */
#define ATTR_nG (1 << 11)
#define ATTR_AF (1 << 10)
#define ATTR_SH(x) ((x) << 8)
+#define ATTR_SH_MASK ATTR_SH(3)
+#define ATTR_SH_NS 0 /* Non-shareable */
+#define ATTR_SH_OS 2 /* Outer-shareable */
+#define ATTR_SH_IS 3 /* Inner-shareable */
#define ATTR_AP_RW_BIT (1 << 7)
#define ATTR_AP(x) ((x) << 6)
#define ATTR_AP_MASK ATTR_AP(3)
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