svn commit: r303817 - head/sys/powerpc/include

[Justin Hibbits]

Author: jhibbits
Date: Sun Aug  7 19:09:56 2016
New Revision: 303817
URL: https://svnweb.freebsd.org/changeset/base/303817

Log:
  Set EN_MAS7_UPDATE HID0 bit for e500 core.
  
  Without enabling this bit, tlbre and tlbsx don't update the MAS7 register,
  resulting in garbage in the register after a read (rather, the previous setting
  of it for a tlbwe).  This can result in mmu_booke_mapdev_attr() thinking
  mappings that should match actually don't, because tlb1_read_entry() can't
  determine the correct address of a given entry.
  
  MFC after:	11-RELEASE

Modified:
  head/sys/powerpc/include/hid.h

Modified: head/sys/powerpc/include/hid.h
==============================================================================
--- head/sys/powerpc/include/hid.h	Sun Aug  7 18:12:36 2016	(r303816)
+++ head/sys/powerpc/include/hid.h	Sun Aug  7 19:09:56 2016	(r303817)
@@ -208,7 +208,8 @@
 #define HID1_E500_ASTME	0x00002000  /* Address bus streaming mode enable */
 #define HID1_E500_RFXE	0x00020000  /* Read fault exception enable */
 
-#define HID0_E500_DEFAULT_SET	(HID0_EMCP | HID0_E500_TBEN)
+#define HID0_E500_DEFAULT_SET	(HID0_EMCP | HID0_E500_TBEN | \
+				 HID0_E500_MAS7UPDEN)
 #define HID1_E500_DEFAULT_SET	(HID1_E500_ABE | HID1_E500_ASTME)
 #define HID0_E500MC_DEFAULT_SET	(HID0_EMCP | HID0_E500MC_L2MMU_MHD | \
 				 HID0_E500_MAS7UPDEN)