[src/trunk]: src/sys/arch/x86/x86 Remove this comment and allow the beginning...

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

details:   https://anonhg.NetBSD.org/src/rev/feb878524eaf
branches:  trunk
changeset: 819291:feb878524eaf
user:      maxv <maxv%NetBSD.org@localhost>
date:      Fri Nov 25 14:26:53 2016 +0000

description:
Remove this comment and allow the beginning of .data to be mapped with
large pages. The issue is fixed, the lapic va is dynamically allocated
now.

diffstat:

 sys/arch/x86/x86/pmap.c |  11 +++--------
 1 files changed, 3 insertions(+), 8 deletions(-)

diffs (32 lines):

diff -r 2f13a61730c6 -r feb878524eaf sys/arch/x86/x86/pmap.c
--- a/sys/arch/x86/x86/pmap.c   Fri Nov 25 14:12:55 2016 +0000
+++ b/sys/arch/x86/x86/pmap.c   Fri Nov 25 14:26:53 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pmap.c,v 1.228 2016/11/25 14:12:56 maxv Exp $  */
+/*     $NetBSD: pmap.c,v 1.229 2016/11/25 14:26:53 maxv Exp $  */
 
 /*-
  * Copyright (c) 2008, 2010, 2016 The NetBSD Foundation, Inc.
@@ -171,7 +171,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.228 2016/11/25 14:12:56 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.229 2016/11/25 14:26:53 maxv Exp $");
 
 #include "opt_user_ldt.h"
 #include "opt_lockdebug.h"
@@ -1621,12 +1621,7 @@
        }
 
        /* Remap the kernel data+bss using large pages. */
-       /*
-        * XXX: we need to make sure the first page (PAGE_SIZE) of .data is not
-        * mapped with a large page. As bizarre as it might seem, this first
-        * page is used as the VA for the LAPIC page.
-        */
-       kva = roundup((vaddr_t)&__data_start+PAGE_SIZE, NBPD_L2);
+       kva = roundup((vaddr_t)&__data_start, NBPD_L2);
        kva_end = rounddown((vaddr_t)&__kernel_end, NBPD_L1);
        pa = kva - KERNBASE;
        for (/* */; kva + NBPD_L2 <= kva_end; kva += NBPD_L2, pa += NBPD_L2) {