Corral all the host state associated with the virtual machine into its own file.

This state is independent of the type of hardware assist used so there is
really no need for it to be in Intel-specific code.

Obtained from:	NetApp

1 files changed, 75 insertions, 0 deletions

diff --git a/sys/amd64/vmm/vmm_host.h b/sys/amd64/vmm/vmm_host.h
new file mode 100644
index 0000000..839f54a
--- /dev/null
+++ b/sys/amd64/vmm/vmm_host.h
@@ -0,0 +1,75 @@
+/*-
+ * Copyright (c) 2012 NetApp, Inc.
+ * 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, 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 NETAPP, INC ``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 NETAPP, INC OR CONTRIBUTORS 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef	_VMM_HOST_H_
+#define	_VMM_HOST_H_
+
+#ifndef	_KERNEL
+#error "no user-servicable parts inside"
+#endif
+
+void vmm_host_state_init(void);
+
+uint64_t vmm_get_host_pat(void);
+uint64_t vmm_get_host_efer(void);
+uint64_t vmm_get_host_cr0(void);
+uint64_t vmm_get_host_cr4(void);
+uint64_t vmm_get_host_datasel(void);
+uint64_t vmm_get_host_codesel(void);
+uint64_t vmm_get_host_tsssel(void);
+uint64_t vmm_get_host_fsbase(void);
+uint64_t vmm_get_host_idtrbase(void);
+
+/*
+ * Inline access to host state that is used on every VM entry
+ */
+static __inline uint64_t
+vmm_get_host_trbase(void)
+{
+
+	return ((uint64_t)PCPU_GET(tssp));
+}
+
+static __inline uint64_t
+vmm_get_host_gdtrbase(void)
+{
+
+	return ((uint64_t)&gdt[NGDT * curcpu]);
+}
+
+struct pcpu;
+extern struct pcpu __pcpu[];
+
+static __inline uint64_t
+vmm_get_host_gsbase(void)
+{
+
+	return ((uint64_t)&__pcpu[curcpu]);
+}
+
+#endif