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-rw-r--r--shared/intel_reg.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/shared/intel_reg.h b/shared/intel_reg.h
index d19f1ba..36d8180 100644
--- a/shared/intel_reg.h
+++ b/shared/intel_reg.h
@@ -70,8 +70,10 @@
/** @{
* 915 definitions
+ *
+ * 915 documents say that bits 31:28 and 1 are "undefined, must be zero."
*/
-#define S0_VB_OFFSET_MASK 0xffffffc0
+#define S0_VB_OFFSET_MASK 0x0ffffffc
#define S0_AUTO_CACHE_INV_DISABLE (1<<0)
/** @} */