1 files changed, 87 insertions, 0 deletions
diff --git a/usr/src/uts/i86pc/io/vmm/amd/npt.c b/usr/src/uts/i86pc/io/vmm/amd/npt.c
new file mode 100644
index 0000000000..e61464a964
--- /dev/null
+++ b/usr/src/uts/i86pc/io/vmm/amd/npt.c
@@ -0,0 +1,87 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2013 Anish Gupta (akgupt3@gmail.com)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/systm.h>
+#include <sys/sysctl.h>
+
+#include <vm/vm.h>
+#include <vm/pmap.h>
+#include <vm/vm_extern.h>
+
+#include "npt.h"
+
+SYSCTL_DECL(_hw_vmm);
+SYSCTL_NODE(_hw_vmm, OID_AUTO, npt, CTLFLAG_RW, NULL, NULL);
+
+static int npt_flags;
+SYSCTL_INT(_hw_vmm_npt, OID_AUTO, pmap_flags, CTLFLAG_RD,
+	&npt_flags, 0, NULL);
+
+#define NPT_IPIMASK	0xFF
+
+/*
+ * AMD nested page table init.
+ */
+int
+svm_npt_init(int ipinum)
+{
+	int enable_superpage = 1;
+
+	npt_flags = ipinum & NPT_IPIMASK;
+	TUNABLE_INT_FETCH("hw.vmm.npt.enable_superpage", &enable_superpage);
+	if (enable_superpage)
+		npt_flags |= PMAP_PDE_SUPERPAGE; 
+	
+	return (0);
+}
+
+static int
+npt_pinit(pmap_t pmap)
+{
+
+	return (pmap_pinit_type(pmap, PT_RVI, npt_flags));
+}
+
+struct vmspace *
+svm_npt_alloc(vm_offset_t min, vm_offset_t max)
+{
+	
+	return (vmspace_alloc(min, max, npt_pinit));
+}
+
+void
+svm_npt_free(struct vmspace *vmspace)
+{
+
+	vmspace_free(vmspace);
+}