#include <palacios/vm_guest.h>
+
static inline int handle_passthrough_pagefault_64(struct guest_info * info,
addr_t fault_addr,
pf_error_t error_code) {
int pte_index = PTE64_INDEX(fault_addr);
+
+
struct v3_shadow_region * region = v3_get_shadow_region(info, fault_addr);
- if ((region == NULL) ||
- (region->host_type == SHDW_REGION_INVALID)) {
+ if (region == NULL) {
PrintError("Invalid region in passthrough page fault 64, addr=%p\n",
(void *)fault_addr);
return -1;
}
host_addr = v3_get_shadow_addr(region, fault_addr);
+ //
// Lookup the correct PML address based on the PAGING MODE
if (info->shdw_pg_mode == SHADOW_PAGING) {
if (pml[pml_index].present == 0) {
pdpe = (pdpe64_t *)create_generic_pt_page();
- pml[pml_index].present = 1;
// Set default PML Flags...
+ pml[pml_index].present = 1;
+ pml[pml_index].writable = 1;
+ pml[pml_index].user_page = 1;
+
pml[pml_index].pdp_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pdpe));
} else {
pdpe = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pml[pml_index].pdp_base_addr));
if (pdpe[pdpe_index].present == 0) {
pde = (pde64_t *)create_generic_pt_page();
- pdpe[pdpe_index].present = 1;
// Set default PDPE Flags...
+ pdpe[pdpe_index].present = 1;
+ pdpe[pdpe_index].writable = 1;
+ pdpe[pdpe_index].user_page = 1;
+
pdpe[pdpe_index].pd_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pde));
} else {
pde = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pdpe[pdpe_index].pd_base_addr));
return 0;
}
+static inline int invalidate_addr_64(struct guest_info * info, addr_t inv_addr) {
+ pml4e64_t * pml = NULL;
+ pdpe64_t * pdpe = NULL;
+ pde64_t * pde = NULL;
+ pte64_t * pte = NULL;
+
+
+ // TODO:
+ // Call INVLPGA
+
+ // clear the page table entry
+ int pml_index = PML4E64_INDEX(inv_addr);
+ int pdpe_index = PDPE64_INDEX(inv_addr);
+ int pde_index = PDE64_INDEX(inv_addr);
+ int pte_index = PTE64_INDEX(inv_addr);
+
+
+ // Lookup the correct PDE address based on the PAGING MODE
+ if (info->shdw_pg_mode == SHADOW_PAGING) {
+ pml = CR3_TO_PML4E64_VA(info->ctrl_regs.cr3);
+ } else {
+ pml = CR3_TO_PML4E64_VA(info->direct_map_pt);
+ }
+
+ if (pml[pml_index].present == 0) {
+ return 0;
+ }
+
+ pdpe = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pml[pml_index].pdp_base_addr));
+
+ if (pdpe[pdpe_index].present == 0) {
+ return 0;
+ } else if (pdpe[pdpe_index].large_page == 1) {
+ pdpe[pdpe_index].present = 0;
+ return 0;
+ }
+
+ pde = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pdpe[pdpe_index].pd_base_addr));
+
+ if (pde[pde_index].present == 0) {
+ return 0;
+ } else if (pde[pde_index].large_page == 1) {
+ pde[pde_index].present = 0;
+ return 0;
+ }
+
+ pte = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pde[pde_index].pt_base_addr));
+
+ pte[pte_index].present = 0;
+
+ return 0;
+}
+
+
#endif