svn commit: r308820 - head/sys/amd64/amd64

[John Baldwin]

Author: jhb
Date: Sat Nov 19 01:34:12 2016
New Revision: 308820
URL: https://svnweb.freebsd.org/changeset/base/308820

Log:
  Report page faults due to reserved bits in PTEs as a separate fault type.
  
  Rather than reporting a page fault due to a bad PTE as a protection
  violation with the "rsv" flag, treat these faults as a separate type of
  fault altogether.
  
  MFC after:	1 month

Modified:
  head/sys/amd64/amd64/trap.c

Modified: head/sys/amd64/amd64/trap.c
==============================================================================
--- head/sys/amd64/amd64/trap.c	Sat Nov 19 00:55:46 2016	(r308819)
+++ head/sys/amd64/amd64/trap.c	Sat Nov 19 01:34:12 2016	(r308820)
@@ -761,11 +761,11 @@ trap_fatal(frame, eva)
 #endif
 	if (type == T_PAGEFLT) {
 		printf("fault virtual address	= 0x%lx\n", eva);
-		printf("fault code		= %s %s %s%s, %s\n",
+		printf("fault code		= %s %s %s, %s\n",
 			code & PGEX_U ? "user" : "supervisor",
 			code & PGEX_W ? "write" : "read",
 			code & PGEX_I ? "instruction" : "data",
-			code & PGEX_RSV ? " rsv" : "",
+			code & PGEX_RSV ? "reserved bits in PTE" :
 			code & PGEX_P ? "protection violation" : "page not present");
 	}
 	printf("instruction pointer	= 0x%lx:0x%lx\n",