svn commit: r318253 - head/sys/arm64/include

[Andrew Turner]

Author: andrew
Date: Sat May 13 13:03:20 2017
New Revision: 318253
URL: https://svnweb.freebsd.org/changeset/base/318253

Log:
  Allocate a cacheline when reading or writing to write through memory. The
  hardware will still write to memory, however following reads will be from
  the cache.
  
  MFC after:	1 week
  Sponsored by:	DARPA, AFRL

Modified:
  head/sys/arm64/include/armreg.h

Modified: head/sys/arm64/include/armreg.h
==============================================================================
--- head/sys/arm64/include/armreg.h	Sat May 13 13:01:15 2017	(r318252)
+++ head/sys/arm64/include/armreg.h	Sat May 13 13:03:20 2017	(r318253)
@@ -360,7 +360,7 @@
 #define	MAIR_ATTR(attr, idx) ((attr) << ((idx) * 8))
 #define	 MAIR_DEVICE_nGnRnE	0x00
 #define	 MAIR_NORMAL_NC		0x44
-#define	 MAIR_NORMAL_WT		0x88
+#define	 MAIR_NORMAL_WT		0xbb
 #define	 MAIR_NORMAL_WB		0xff
 
 /* PAR_EL1 - Physical Address Register */