[src/trunk]: src/sys/arch/amd64/amd64 Work around dumb KASSERT in vtopte(), t...

[maxv <maxv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/48d06fde4dc6
branches:  trunk
changeset: 993389:48d06fde4dc6
user:      maxv <maxv%NetBSD.org@localhost>
date:      Sat Sep 08 12:40:17 2018 +0000

description:
Work around dumb KASSERT in vtopte(), the PTE area can now be above the
MAIN area. I guess the KASSERT should be removed because it doesn't make
a lot of sense.

diffstat:

 sys/arch/amd64/amd64/db_disasm.c |  10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diffs (31 lines):

diff -r 0de13f3df889 -r 48d06fde4dc6 sys/arch/amd64/amd64/db_disasm.c
--- a/sys/arch/amd64/amd64/db_disasm.c  Sat Sep 08 11:54:26 2018 +0000
+++ b/sys/arch/amd64/amd64/db_disasm.c  Sat Sep 08 12:40:17 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: db_disasm.c,v 1.24 2018/01/21 16:51:14 christos Exp $  */
+/*     $NetBSD: db_disasm.c,v 1.25 2018/09/08 12:40:17 maxv Exp $      */
 
 /* 
  * Mach Operating System
@@ -33,7 +33,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: db_disasm.c,v 1.24 2018/01/21 16:51:14 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: db_disasm.c,v 1.25 2018/09/08 12:40:17 maxv Exp $");
 
 #ifndef _KERNEL
 #include <sys/types.h>
@@ -1207,7 +1207,11 @@
                pte = kvtopte((vaddr_t)loc);
        else
                pte = vtopte((vaddr_t)loc);
-       pde = vtopte((vaddr_t)pte);
+       if ((vaddr_t)pte >= VM_MIN_KERNEL_ADDRESS)
+               pde = kvtopte((vaddr_t)pte);
+       else
+               pde = vtopte((vaddr_t)pte);
+
        if ((*pde & PG_V) == 0 || (*pte & PG_V) == 0) {
                db_printf("invalid address\n");
                return (loc);