#include <palacios/vm_guest_mem.h>
#include <palacios/vm_guest.h>
+/* This always builds 3 level page tables - no large pages */
static inline int handle_passthrough_pagefault_32pae(struct guest_info * info,
addr_t fault_addr,
- pf_error_t error_code) {
+ pf_error_t error_code,
+ addr_t *actual_start, addr_t *actual_end) {
pdpe32pae_t * pdpe = NULL;
pde32pae_t * pde = NULL;
pte32pae_t * pte = NULL;
}
PrintDebug(info->vm_info, info, "Handling pde error pd base address =%p\n", (void *)pde);
+ *actual_start = BASE_TO_PAGE_ADDR_4KB(PAGE_BASE_ADDR_4KB(fault_addr));
+ *actual_end = BASE_TO_PAGE_ADDR_4KB(PAGE_BASE_ADDR_4KB(fault_addr)+1)-1;
+
// Fix up the PDE entry
if (pde[pde_index].present == 0) {
pte = (pte32pae_t *)create_generic_pt_page(info);
}
PrintDebug(info->vm_info, info, "Handling pte error pt base address=%p\n", (void *)pte);
+
+
// Fix up the PTE entry
if (pte[pte_index].present == 0) {
pte[pte_index].user_page = 1;
-static inline int invalidate_addr_32pae(struct guest_info * core, addr_t inv_addr)
+static inline int invalidate_addr_32pae(struct guest_info * core, addr_t inv_addr,
+ addr_t *actual_start, addr_t *actual_end)
{
- addr_t start;
uint64_t len;
+ int rc;
- return invalidate_addr_32pae_internal(core,inv_addr,&start,&len);
+ rc = invalidate_addr_32pae_internal(core,inv_addr,actual_start,&len);
+
+ *actual_end = *actual_start + len - 1;
+
+ return rc;
+
+
}
-static inline int invalidate_addr_32pae_range(struct guest_info * core, addr_t inv_addr_start, addr_t inv_addr_end)
+static inline int invalidate_addr_32pae_range(struct guest_info * core, addr_t inv_addr_start, addr_t inv_addr_end,
+ addr_t *actual_start, addr_t *actual_end)
{
addr_t next;
addr_t start;
for (next=inv_addr_start; next<=inv_addr_end; ) {
rc = invalidate_addr_32pae_internal(core,next,&start, &len);
+ if (next==inv_addr_start) {
+ // first iteration, capture where we start invalidating
+ *actual_start = start;
+ }
if (rc) {
return rc;
}
next = start + len;
+ *actual_end = next;
}
+ // last iteration, actual_end is off by one
+ (*actual_end)--;
return 0;
}