[src/trunk]: src/sys/arch/xen/x86 Import xpmap_pg_nx, and put it in the per-c...

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

details:   https://anonhg.NetBSD.org/src/rev/4976c80ed5ff
branches:  trunk
changeset: 350809:4976c80ed5ff
user:      maxv <maxv%NetBSD.org@localhost>
date:      Sun Jan 22 19:42:48 2017 +0000

description:
Import xpmap_pg_nx, and put it in the per-cpu recursive slot on amd64.

diffstat:

 sys/arch/xen/x86/cpu.c |  15 +++++++--------
 1 files changed, 7 insertions(+), 8 deletions(-)

diffs (44 lines):

diff -r dc4db1eae253 -r 4976c80ed5ff sys/arch/xen/x86/cpu.c
--- a/sys/arch/xen/x86/cpu.c    Sun Jan 22 19:29:38 2017 +0000
+++ b/sys/arch/xen/x86/cpu.c    Sun Jan 22 19:42:48 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cpu.c,v 1.105 2016/11/25 12:20:03 maxv Exp $   */
+/*     $NetBSD: cpu.c,v 1.106 2017/01/22 19:42:48 maxv Exp $   */
 
 /*-
  * Copyright (c) 2000 The NetBSD Foundation, Inc.
@@ -65,7 +65,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.105 2016/11/25 12:20:03 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.106 2017/01/22 19:42:48 maxv Exp $");
 
 #include "opt_ddb.h"
 #include "opt_multiprocessor.h"
@@ -1218,20 +1218,19 @@
        KASSERT(ci->ci_kpm_pdirpa != 0);
 
 #if defined(__x86_64__)
-       /*
-        * Copy over the pmap_kernel() shadow L4 entries 
-        */
+       extern pt_entry_t xpmap_pg_nx;
 
+       /* Copy over the pmap_kernel() shadow L4 entries */
        memcpy(ci->ci_kpm_pdir, pmap_kernel()->pm_pdir, PAGE_SIZE);
 
        /* Recursive kernel mapping */
        ci->ci_kpm_pdir[PDIR_SLOT_PTE] = xpmap_ptom_masked(ci->ci_kpm_pdirpa)
-           | PG_k | PG_V;
+           | PG_k | PG_V | xpmap_pg_nx;
 #elif defined(PAE)
-       /* Copy over the pmap_kernel() shadow L2 entries that map the kernel */
+       /* Copy over the pmap_kernel() shadow L2 entries */
        memcpy(ci->ci_kpm_pdir, pmap_kernel()->pm_pdir + PDIR_SLOT_KERN,
            nkptp[PTP_LEVELS - 1] * sizeof(pd_entry_t));
-#endif /* __x86_64__ else PAE */
+#endif
 
        /* Xen wants a RO pdir. */
        pmap_protect(pmap_kernel(), (vaddr_t)ci->ci_kpm_pdir,