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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Wed, 9 Sep 2020 21:01:36 +0000 (UTC)
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Subject: svn commit: r365511 - head/sys/amd64/amd64
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Author: kib
Date: Wed Sep  9 21:01:36 2020
New Revision: 365511
URL: https://svnweb.freebsd.org/changeset/base/365511

Log:
  amd64: report support for 1G superpages in getpagesizes(2).
  
  Reviewed by:	markj
  Tested by:	pho
  Sponsored by:	The FreeBSD Foundation
  MFC after:	1 week
  Differential revision:	https://reviews.freebsd.org/D24652

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

Modified: head/sys/amd64/amd64/pmap.c
==============================================================================
--- head/sys/amd64/amd64/pmap.c	Wed Sep  9 21:00:11 2020	(r365510)
+++ head/sys/amd64/amd64/pmap.c	Wed Sep  9 21:01:36 2020	(r365511)
@@ -2382,6 +2382,11 @@ pmap_init(void)
 		KASSERT(MAXPAGESIZES > 1 && pagesizes[1] == 0,
 		    ("pmap_init: can't assign to pagesizes[1]"));
 		pagesizes[1] = NBPDR;
+		if ((amd_feature & AMDID_PAGE1GB) != 0) {
+			KASSERT(MAXPAGESIZES > 1 && pagesizes[2] == 0,
+			    ("pmap_init: can't assign to pagesizes[2]"));
+			pagesizes[2] = NBPDP;
+		}
 	}
 
 	/*