pkarashchenko commented on a change in pull request #5775:
URL: https://github.com/apache/incubator-nuttx/pull/5775#discussion_r830386543
##########
File path: arch/risc-v/include/csr.h
##########
@@ -307,6 +307,14 @@
#define MSTATUS_FS_CLEAN (0x2 << 13)
#define MSTATUS_FS_DIRTY (0x3 << 13)
+/* Mask of preserved bits for mstatus */
+
+#ifdef CONFIG_ARCH_RV32
+#define MSTATUS_WPRI (0xff << 23 | 0x15)
+#else
+#define MSTATUS_WPRI (0x1fffffful << 38 | 0x1fful << 23 | 0x15ul)
Review comment:
```suggestion
#define MSTATUS_WPRI (0x1ffffffllu << 38 | 0x1ffllu << 23 | 0x15)
```
or we can go with
```suggestion
#define MSTATUS_WPRI (UINT64_C(0x1ffffff) << 38 | UINT64_C(0x1ff) << 23
| 0x15)
```
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