Re: svn commit: r329171 - head/sys/amd64/amd64

[Jonathan Looney]

On Mon, Feb 12, 2018 at 12:27 PM, Jonathan T. Looney 
wrote:

> Author: jtl
> Date: Mon Feb 12 17:27:50 2018
> New Revision: 329171
> URL: https://svnweb.freebsd.org/changeset/base/329171
>
> Log:
>   Mark the pages used for the initial page-table entries as wired. This
>   makes them consistent with the way other page-table pages are allocated.
>   It also provides the rest of the VM system a good clue that these pages
>   are used.
>
>   Reviewed by:  alc, kib, markj
>   Sponsored by: Netflix
>   Differential Revision:https://reviews.freebsd.org/D14269


Should have also said...
MFC after: 2 weeks
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svn commit: r329171 - head/sys/amd64/amd64

[Jonathan T. Looney]

Author: jtl
Date: Mon Feb 12 17:27:50 2018
New Revision: 329171
URL: https://svnweb.freebsd.org/changeset/base/329171

Log:
  Mark the pages used for the initial page-table entries as wired. This
  makes them consistent with the way other page-table pages are allocated.
  It also provides the rest of the VM system a good clue that these pages
  are used.
  
  Reviewed by:  alc, kib, markj
  Sponsored by: Netflix
  Differential Revision:https://reviews.freebsd.org/D14269

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

Modified: head/sys/amd64/amd64/pmap.c
==
--- head/sys/amd64/amd64/pmap.c Mon Feb 12 16:25:56 2018(r329170)
+++ head/sys/amd64/amd64/pmap.c Mon Feb 12 17:27:50 2018(r329171)
@@ -1244,7 +1244,9 @@ pmap_init(void)
("pmap_init: page table page is out of range"));
mpte->pindex = pmap_pde_pindex(KERNBASE) + i;
mpte->phys_addr = KPTphys + (i << PAGE_SHIFT);
+   mpte->wire_count = 1;
}
+   atomic_add_int(_cnt.v_wire_count, nkpt);
 
/*
 * If the kernel is running on a virtual machine, then it must assume
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