From: Jack Lange <jarusl@cs.northwestern.edu>
Date: Fri, 14 Aug 2009 20:35:01 +0000 (-0500)
Subject: added initial symbiotic swapping framework
X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=commitdiff_plain;h=2304917404cd287c4741d9f85ff8a280e248c7d0

added initial symbiotic swapping framework
---

diff --git a/palacios/include/palacios/vmm_sym_swap.h b/palacios/include/palacios/vmm_sym_swap.h
new file mode 100644
index 0000000..6931ea1
--- /dev/null
+++ b/palacios/include/palacios/vmm_sym_swap.h
@@ -0,0 +1,54 @@
+/* 
+ * This file is part of the Palacios Virtual Machine Monitor developed
+ * by the V3VEE Project with funding from the United States National 
+ * Science Foundation and the Department of Energy.  
+ *
+ * The V3VEE Project is a joint project between Northwestern University
+ * and the University of New Mexico.  You can find out more at 
+ * http://www.v3vee.org
+ *
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu> 
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org> 
+ * All rights reserved.
+ *
+ * Author: Jack Lange <jarusl@cs.northwestern.edu>
+ *
+ * This is free software.  You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
+ */
+
+#ifndef __VMM_SYM_SWAP_H__
+#define __VMM_SYM_SWAP_H__
+
+#ifdef __V3VEE__ 
+#ifdef CONFIG_SYMBIOTIC_SWAP
+
+#include <palacios/vmm.h>
+
+static inline int is_swapped_pte32(pte32_t * pte) {
+    return (*(uint32_t *)pte != 0);
+}
+
+
+struct v3_swap_dev {
+    addr_t (*get_page)(int index);
+
+};
+
+
+struct v3_sym_swap_state {
+    struct v3_swap_dev[256];
+
+};
+
+
+int v3_init_sym_swap(struct guest_info * info);
+
+addr_t v3_get_swapped_pg_addr(pte32_t * pte);
+
+
+
+#endif
+#endif
+
+#endif
diff --git a/palacios/src/devices/Kconfig b/palacios/src/devices/Kconfig
index 38f8c9e..1452ee3 100644
--- a/palacios/src/devices/Kconfig
+++ b/palacios/src/devices/Kconfig
@@ -254,7 +254,7 @@ config RAM_HD
 config SYM_SWAP
 	bool "Symbiotic Swap disk"
 	default y
-	depends on SYMBIOTIC && (LINUX_VIRTIO_BLOCK || IDE)
+	depends on SYMBIOTIC_SWAP && (LINUX_VIRTIO_BLOCK || IDE)
 	help 
 	  Includes the symbiotic ram based swap disk
 
diff --git a/palacios/src/palacios/Makefile b/palacios/src/palacios/Makefile
index c0b20f8..88f917a 100644
--- a/palacios/src/palacios/Makefile
+++ b/palacios/src/palacios/Makefile
@@ -53,3 +53,5 @@ obj-$(CONFIG_VMX) +=  	vmx.o \
 obj-$(CONFIG_INSTRUMENT_VMM) += vmm_instrument.o
 obj-$(CONFIG_PROFILE_VMM) += vmm_profiler.o 
 obj-$(CONFIG_SOCKET) +=  vmm_socket.o
+
+obj-$(CONFIG_SYMBIOTIC_SWAP) += vmm_sym_swap.o
\ No newline at end of file
diff --git a/palacios/src/palacios/vmm_shadow_paging.c b/palacios/src/palacios/vmm_shadow_paging.c
index 4a4e719..e43a969 100644
--- a/palacios/src/palacios/vmm_shadow_paging.c
+++ b/palacios/src/palacios/vmm_shadow_paging.c
@@ -30,6 +30,10 @@
 
 #include <palacios/vmm_direct_paging.h>
 
+#ifdef CONFIG_SYMBIOTIC_SWAP
+#include <palacios/vmm_sym_swap.h>
+#endif
+
 #ifndef CONFIG_DEBUG_SHADOW_PAGING
 #undef PrintDebug
 #define PrintDebug(fmt, args...)
diff --git a/palacios/src/palacios/vmm_shadow_paging_32.h b/palacios/src/palacios/vmm_shadow_paging_32.h
index f96485e..4c8922b 100644
--- a/palacios/src/palacios/vmm_shadow_paging_32.h
+++ b/palacios/src/palacios/vmm_shadow_paging_32.h
@@ -36,7 +36,7 @@ static inline int activate_shadow_pt_32(struct guest_info * info) {
     return 0;
 }
 
-#ifdef __V3_SYMBIOTIC__
+#ifdef CONFIG_SYMBIOTIC_SWAP
 static inline int is_swapped_pte32(pte32_t * pte) {
     return (*(uint32_t *)pte != 0);
 }
@@ -229,7 +229,7 @@ static int handle_pte_shadow_pagefault_32(struct guest_info * info, addr_t fault
 
 	PrintDebug("Access error injecting pf to guest (guest access error=%d) (pf error code=%d)\n", 
 		   guest_pte_access, *(uint_t*)&error_code);
-#ifdef __V3_SYMBIOTIC__
+#ifdef CONFIG_SYMBIOTIC_SWAP_
 	if (is_swapped_pg(guest_pte)) {
 	    PrintError("Page fault on swapped out page\n");
 
diff --git a/palacios/src/palacios/vmm_sym_swap.c b/palacios/src/palacios/vmm_sym_swap.c
new file mode 100644
index 0000000..bb79343
--- /dev/null
+++ b/palacios/src/palacios/vmm_sym_swap.c
@@ -0,0 +1,20 @@
+/* 
+ * This file is part of the Palacios Virtual Machine Monitor developed
+ * by the V3VEE Project with funding from the United States National 
+ * Science Foundation and the Department of Energy.  
+ *
+ * The V3VEE Project is a joint project between Northwestern University
+ * and the University of New Mexico.  You can find out more at 
+ * http://www.v3vee.org
+ *
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu> 
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org> 
+ * All rights reserved.
+ *
+ * Author: Jack Lange <jarusl@cs.northwestern.edu>
+ *
+ * This is free software.  You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
+ */
+
+#include <palacios/vmm_sym_swap.h>