From: Jack Lange <jarusl@cs.northwestern.edu>
Date: Thu, 23 Apr 2009 04:20:16 +0000 (-0500)
Subject: added host cpu type function
X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=commitdiff_plain;h=de3fce7c94e36342005ae5f79fcf22937acde586

added host cpu type function
---

diff --git a/palacios/include/palacios/svm.h b/palacios/include/palacios/svm.h
index b522ee3..0be1c9a 100644
--- a/palacios/include/palacios/svm.h
+++ b/palacios/include/palacios/svm.h
@@ -38,8 +38,6 @@
 #define CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml 0x00000004
 #define CPUID_SVM_REV_AND_FEATURE_IDS_edx_np  0x00000001
 
-
-#define EFER_MSR                 0xc0000080
 #define EFER_MSR_svm_enable      0x00001000
 
 /************/
diff --git a/palacios/include/palacios/vmm_ctrl_regs.h b/palacios/include/palacios/vmm_ctrl_regs.h
index aafa83b..f23caad 100644
--- a/palacios/include/palacios/vmm_ctrl_regs.h
+++ b/palacios/include/palacios/vmm_ctrl_regs.h
@@ -25,6 +25,8 @@
 
 #include <palacios/vm_guest.h>
 
+#define EFER_MSR                 0xc0000080
+
 struct cr0_real {
     uint_t pe    : 1;
     uint_t mp    : 1;
diff --git a/palacios/src/palacios/vmm.c b/palacios/src/palacios/vmm.c
index c07476f..e860391 100644
--- a/palacios/src/palacios/vmm.c
+++ b/palacios/src/palacios/vmm.c
@@ -24,6 +24,8 @@
 #include <palacios/vmm_config.h>
 #include <palacios/vm_guest.h>
 #include <palacios/vmm_instrument.h>
+#include <palacios/vmm_ctrl_regs.h>
+#include <palacios/vmm_lowlevel.h>
 
 
 /* These should be the only global variables in Palacios */
@@ -67,3 +69,35 @@ void Init_V3(struct v3_os_hooks * hooks, struct v3_ctrl_ops * vmm_ops) {
 	PrintDebug("CPU has no virtualization Extensions\n");
     }
 }
+
+
+
+#ifdef __V3_32BIT__
+
+v3_cpu_mode_t v3_get_host_cpu_mode() {
+    uint32_t cr4_val;
+    struct cr4_32 * cr4;
+
+    __asm__ (
+	     "movl %%cr4, %0; "
+	     : "=r"(cr4_val) 
+	     );
+
+    
+    cr4 = (struct cr4_32 *)&(cr4_val);
+
+    if (cr4->pae == 1) {
+	return PROTECTED_PAE;
+    } else {
+	return PROTECTED;
+    }
+}
+
+#elif __V3_64BIT__
+
+v3_cpu_mode_t v3_get_host_cpu_mode() {
+    return LONG;
+}
+
+#endif 
+
diff --git a/palacios/src/palacios/vmm_direct_paging.c b/palacios/src/palacios/vmm_direct_paging.c
index e6b1052..e50a458 100644
--- a/palacios/src/palacios/vmm_direct_paging.c
+++ b/palacios/src/palacios/vmm_direct_paging.c
@@ -111,8 +111,7 @@ int v3_handle_passthrough_pagefault(struct guest_info * info, addr_t fault_addr,
 
 
 int v3_handle_nested_pagefault(struct guest_info * info, addr_t fault_addr, pf_error_t error_code) {
-    // THIS IS VERY BAD
-    v3_cpu_mode_t mode = LONG;
+    v3_cpu_mode_t mode = v3_get_host_cpu_mode()
 
 
     PrintDebug("Nested PageFault: fault_addr=%p, error_code=%u\n",(void*)fault_addr, *(uint_t *)&error_code);