From fbf2a778760f24565eab950ced3e2ad1df4cf844 Mon Sep 17 00:00:00 2001
From: Konstantin Belousov <kib@FreeBSD.org>
Date: Tue, 8 Sep 2020 23:38:49 +0000
Subject: [PATCH] Convert allocations of the phys pager to vm_pager_allocate().

Future changes would require additional initialization of OBJT_PHYS
objects, and vm_object_allocate() is not suitable for it.

Reviewed by:	markj
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D24652
---
 sys/dev/ksyms/ksyms.c       |  7 +++++--
 sys/dev/xen/gntdev/gntdev.c |  3 ++-
 sys/kern/link_elf.c         |  3 ++-
 sys/kern/link_elf_obj.c     | 18 +++++++++++-------
 4 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/sys/dev/ksyms/ksyms.c b/sys/dev/ksyms/ksyms.c
index 4a275241676..6e7b032ea34 100644
--- a/sys/dev/ksyms/ksyms.c
+++ b/sys/dev/ksyms/ksyms.c
@@ -41,6 +41,7 @@
 #include <sys/proc.h>
 #include <sys/queue.h>
 #include <sys/resourcevar.h>
+#include <sys/rwlock.h>
 #include <sys/stat.h>
 #include <sys/sx.h>
 #include <sys/uio.h>
@@ -51,6 +52,8 @@
 #include <vm/vm.h>
 #include <vm/vm_extern.h>
 #include <vm/vm_object.h>
+#include <vm/vm_page.h>
+#include <vm/vm_pager.h>
 
 #include "linker_if.h"
 
@@ -442,8 +445,8 @@ ksyms_open(struct cdev *dev, int flags, int fmt __unused, struct thread *td)
 		ksyms_size_calc(&ts);
 		elfsz = sizeof(struct ksyms_hdr) + ts.ts_symsz + ts.ts_strsz;
 
-		object = vm_object_allocate(OBJT_PHYS,
-		    OFF_TO_IDX(round_page(elfsz)));
+		object = vm_pager_allocate(OBJT_PHYS, NULL, round_page(elfsz),
+		    VM_PROT_ALL, 0, td->td_ucred);
 		sc->sc_obj = object;
 		sc->sc_objsz = elfsz;
 
diff --git a/sys/dev/xen/gntdev/gntdev.c b/sys/dev/xen/gntdev/gntdev.c
index 63da0467e34..8249eaba8bc 100644
--- a/sys/dev/xen/gntdev/gntdev.c
+++ b/sys/dev/xen/gntdev/gntdev.c
@@ -1068,7 +1068,8 @@ mmap_gref(struct per_user_data *priv_user, struct gntdev_gref *gref_start,
 	vm_object_t mem_obj;
 	struct gntdev_gref *gref;
 
-	mem_obj = vm_object_allocate(OBJT_PHYS, size);
+	mem_obj = vm_pager_allocate(OBJT_PHYS, NULL, size, VM_PROT_ALL, 0,
+	    curthread->td_ucred);
 	if (mem_obj == NULL)
 		return (ENOMEM);
 
diff --git a/sys/kern/link_elf.c b/sys/kern/link_elf.c
index a9861884c2d..ea2bcd268a7 100644
--- a/sys/kern/link_elf.c
+++ b/sys/kern/link_elf.c
@@ -1106,7 +1106,8 @@ link_elf_load_file(linker_class_t cls, const char* filename,
 
 	ef = (elf_file_t) lf;
 #ifdef SPARSE_MAPPING
-	ef->object = vm_object_allocate(OBJT_PHYS, atop(mapsize));
+	ef->object = vm_pager_allocate(OBJT_PHYS, NULL, mapsize, VM_PROT_ALL,
+	    0, thread0.td_ucred);
 	if (ef->object == NULL) {
 		error = ENOMEM;
 		goto out;
diff --git a/sys/kern/link_elf_obj.c b/sys/kern/link_elf_obj.c
index 48fcf8337ee..d2364011038 100644
--- a/sys/kern/link_elf_obj.c
+++ b/sys/kern/link_elf_obj.c
@@ -34,16 +34,17 @@ __FBSDID("$FreeBSD$");
 
 #include <sys/param.h>
 #include <sys/systm.h>
+#include <sys/fcntl.h>
 #include <sys/kernel.h>
 #include <sys/lock.h>
 #include <sys/malloc.h>
+#include <sys/linker.h>
 #include <sys/mutex.h>
 #include <sys/mount.h>
-#include <sys/proc.h>
 #include <sys/namei.h>
-#include <sys/fcntl.h>
+#include <sys/proc.h>
+#include <sys/rwlock.h>
 #include <sys/vnode.h>
-#include <sys/linker.h>
 
 #include <machine/elf.h>
 
@@ -53,11 +54,13 @@ __FBSDID("$FreeBSD$");
 
 #include <vm/vm.h>
 #include <vm/vm_param.h>
-#include <vm/vm_object.h>
-#include <vm/vm_kern.h>
-#include <vm/vm_extern.h>
 #include <vm/pmap.h>
+#include <vm/vm_extern.h>
+#include <vm/vm_kern.h>
 #include <vm/vm_map.h>
+#include <vm/vm_object.h>
+#include <vm/vm_page.h>
+#include <vm/vm_pager.h>
 
 #include <sys/link_elf.h>
 
@@ -905,7 +908,8 @@ link_elf_load_file(linker_class_t cls, const char *filename,
 	 * This stuff needs to be in a single chunk so that profiling etc
 	 * can get the bounds and gdb can associate offsets with modules
 	 */
-	ef->object = vm_object_allocate(OBJT_PHYS, atop(round_page(mapsize)));
+	ef->object = vm_pager_allocate(OBJT_PHYS, NULL, round_page(mapsize),
+	    VM_PROT_ALL, 0, thread0.td_ucred);
 	if (ef->object == NULL) {
 		error = ENOMEM;
 		goto out;