* This is free software. You are permitted to use,
* redistribute, and modify it as specified in the file "V3VEE_LICENSE".
*/
+#include <palacios/vmm.h>
+
#include <palacios/vmm_sym_swap.h>
+
+// this is hardcoded in linux, but we should expose it via a sym interface
+#define SWAP_DEV_SHIFT 5
+
+int v3_init_sym_swap(struct guest_info * info) {
+
+ memset(&(info->swap_state), 0, sizeof(struct v3_sym_swap_state));
+
+ return 0;
+}
+
+
+int v3_register_swap_disk(struct guest_info * info, int dev_index,
+ struct v3_swap_ops * ops, void * private_data) {
+ struct v3_sym_swap_state * swap_state = &(info->swap_state);
+
+ swap_state->devs[dev_index].present = 1;
+ swap_state->devs[dev_index].private_data = private_data;
+ swap_state->devs[dev_index].ops = ops;
+
+ return 0;
+}
+
+
+addr_t v3_get_swapped_pg_addr(struct guest_info * info, pte32_t * pte) {
+ struct v3_sym_swap_state * swap_state = &(info->swap_state);
+ uint32_t dev_index = *(uint32_t *)pte & ((1 << SWAP_DEV_SHIFT) - 1);
+ uint32_t pg_index = (*(uint32_t *)pte) >> SWAP_DEV_SHIFT;
+ struct v3_swap_dev * swp_dev = &(swap_state->devs[dev_index]);
+
+ return (addr_t)swp_dev->ops->get_swap_entry(pg_index, swp_dev->private_data);
+}
+
+
+
+int v3_swap_out_notify(struct guest_info * info, int pg_index, int dev_index) {
+ return -1;
+}
