1 files changed, 124 insertions, 0 deletions
diff --git a/sys/amd64/vmm/vmm_host.c b/sys/amd64/vmm/vmm_host.c
new file mode 100644
index 0000000..8dfef73
--- /dev/null
+++ b/sys/amd64/vmm/vmm_host.c
@@ -0,0 +1,124 @@
+/*-
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/pcpu.h>
+
+#include <machine/cpufunc.h>
+#include <machine/segments.h>
+#include <machine/specialreg.h>
+
+#include "vmm_host.h"
+
+static uint64_t vmm_host_efer, vmm_host_pat, vmm_host_cr0, vmm_host_cr4;
+
+void
+vmm_host_state_init(void)
+{
+
+	vmm_host_efer = rdmsr(MSR_EFER);
+	vmm_host_pat = rdmsr(MSR_PAT);
+
+	/*
+	 * We always want CR0.TS to be set when the processor does a VM exit.
+	 *
+	 * With emulation turned on unconditionally after a VM exit, we are
+	 * able to trap inadvertent use of the FPU until the guest FPU state
+	 * has been safely squirreled away.
+	 */
+	vmm_host_cr0 = rcr0() | CR0_TS;
+
+	vmm_host_cr4 = rcr4();
+}
+
+uint64_t
+vmm_get_host_pat(void)
+{
+
+	return (vmm_host_pat);
+}
+
+uint64_t
+vmm_get_host_efer(void)
+{
+
+	return (vmm_host_efer);
+}
+
+uint64_t
+vmm_get_host_cr0(void)
+{
+
+	return (vmm_host_cr0);
+}
+
+uint64_t
+vmm_get_host_cr4(void)
+{
+
+	return (vmm_host_cr4);
+}
+
+uint64_t
+vmm_get_host_datasel(void)
+{
+
+	return (GSEL(GDATA_SEL, SEL_KPL));
+
+}
+
+uint64_t
+vmm_get_host_codesel(void)
+{
+
+	return (GSEL(GCODE_SEL, SEL_KPL));
+}
+
+uint64_t
+vmm_get_host_tsssel(void)
+{
+
+	return (GSEL(GPROC0_SEL, SEL_KPL));
+}
+
+uint64_t
+vmm_get_host_fsbase(void)
+{
+
+	return (0);
+}
+
+uint64_t
+vmm_get_host_idtrbase(void)
+{
+
+	return (r_idt.rd_base);
+}