static inline int activate_shadow_pt_64(struct guest_info * info) {
- struct cr3_64 * shadow_cr3 = (struct cr3_64 *)&(info->ctrl_regs.cr3);
- struct cr3_64 * guest_cr3 = (struct cr3_64 *)&(info->shdw_pg_state.guest_cr3);
- struct shadow_page_data * shadow_pt = create_new_shadow_pt(info);
- addr_t shadow_pt_addr = shadow_pt->page_pa;
+ struct cr3_64 * shadow_cr3 = (struct cr3_64 *)&(info->ctrl_regs.cr3);
+ struct cr3_64 * guest_cr3 = (struct cr3_64 *)&(info->shdw_pg_state.guest_cr3);
+ struct shadow_page_data * shadow_pt = create_new_shadow_pt(info);
+ addr_t shadow_pt_addr = shadow_pt->page_pa;
- // Because this is a new CR3 load the allocated page is the new CR3 value
- shadow_pt->cr3 = shadow_pt->page_pa;
+ // Because this is a new CR3 load the allocated page is the new CR3 value
+ shadow_pt->cr3 = shadow_pt->page_pa;
- PrintDebug("Top level Shadow page pa=%p\n", (void *)shadow_pt_addr);
+ PrintDebug("Top level Shadow page pa=%p\n", (void *)shadow_pt_addr);
- shadow_cr3->pml4t_base_addr = PAGE_BASE_ADDR_4KB(shadow_pt_addr);
- PrintDebug("Creating new 64 bit shadow page table %p\n", (void *)BASE_TO_PAGE_ADDR(shadow_cr3->pml4t_base_addr));
+ shadow_cr3->pml4t_base_addr = PAGE_BASE_ADDR_4KB(shadow_pt_addr);
+ PrintDebug("Creating new 64 bit shadow page table %p\n", (void *)BASE_TO_PAGE_ADDR(shadow_cr3->pml4t_base_addr));
- shadow_cr3->pwt = guest_cr3->pwt;
- shadow_cr3->pcd = guest_cr3->pcd;
+ shadow_cr3->pwt = guest_cr3->pwt;
+ shadow_cr3->pcd = guest_cr3->pcd;
- return 0;
+ return 0;
}
static inline int handle_shadow_pagefault_64(struct guest_info * info, addr_t fault_addr, pf_error_t error_code) {
- pml4e64_t * guest_pml = NULL;
- pml4e64_t * shadow_pml = CR3_TO_PML4E64_VA(info->ctrl_regs.cr3);
- addr_t guest_cr3 = CR3_TO_PML4E64_PA(info->shdw_pg_state.guest_cr3);
- pt_access_status_t guest_pml4e_access;
- pt_access_status_t shadow_pml4e_access;
- pml4e64_t * guest_pml4e = NULL;
- pml4e64_t * shadow_pml4e = (pml4e64_t *)&(shadow_pml[PML4E64_INDEX(fault_addr)]);
-
- PrintDebug("64 bit Shadow page fault handler: %p\n", (void *)fault_addr);
- PrintDebug("Handling PML fault\n");
-
- if (guest_pa_to_host_va(info, guest_cr3, (addr_t*)&guest_pml) == -1) {
- PrintError("Invalid Guest PML4E Address: 0x%p\n", (void *)guest_cr3);
- return -1;
- }
+ pml4e64_t * guest_pml = NULL;
+ pml4e64_t * shadow_pml = CR3_TO_PML4E64_VA(info->ctrl_regs.cr3);
+ addr_t guest_cr3 = CR3_TO_PML4E64_PA(info->shdw_pg_state.guest_cr3);
+ pt_access_status_t guest_pml4e_access;
+ pt_access_status_t shadow_pml4e_access;
+ pml4e64_t * guest_pml4e = NULL;
+ pml4e64_t * shadow_pml4e = (pml4e64_t *)&(shadow_pml[PML4E64_INDEX(fault_addr)]);
+
+ PrintDebug("64 bit Shadow page fault handler: %p\n", (void *)fault_addr);
+ PrintDebug("Handling PML fault\n");
+
+ if (guest_pa_to_host_va(info, guest_cr3, (addr_t*)&guest_pml) == -1) {
+ PrintError("Invalid Guest PML4E Address: 0x%p\n", (void *)guest_cr3);
+ return -1;
+ }
- guest_pml4e = (pml4e64_t *)&(guest_pml[PML4E64_INDEX(fault_addr)]);
+ guest_pml4e = (pml4e64_t *)&(guest_pml[PML4E64_INDEX(fault_addr)]);
- PrintDebug("Checking Guest %p\n", (void *)guest_pml);
- // Check the guest page permissions
- guest_pml4e_access = v3_can_access_pml4e64(guest_pml, fault_addr, error_code);
+ PrintDebug("Checking Guest %p\n", (void *)guest_pml);
+ // Check the guest page permissions
+ guest_pml4e_access = v3_can_access_pml4e64(guest_pml, fault_addr, error_code);
- PrintDebug("Checking shadow %p\n", (void *)shadow_pml);
- // Check the shadow page permissions
- shadow_pml4e_access = v3_can_access_pml4e64(shadow_pml, fault_addr, error_code);
+ PrintDebug("Checking shadow %p\n", (void *)shadow_pml);
+ // Check the shadow page permissions
+ shadow_pml4e_access = v3_can_access_pml4e64(shadow_pml, fault_addr, error_code);
- /* Was the page fault caused by the Guest's page tables? */
- if (is_guest_pf(guest_pml4e_access, shadow_pml4e_access) == 1) {
- PrintDebug("Injecting PML4E pf to guest: (guest access error=%d) (pf error code=%d)\n",
- *(uint_t *)&guest_pml4e_access, *(uint_t *)&error_code);
- inject_guest_pf(info, fault_addr, error_code);
- return 0;
- }
-
- if (shadow_pml4e_access == PT_ACCESS_USER_ERROR) {
- //
- // PML4 Entry marked non-user
- //
- PrintDebug("Shadow Paging User access error (shadow_pml4e_access=0x%x, guest_pml4e_access=0x%x)\n",
- shadow_pml4e_access, guest_pml4e_access);
- inject_guest_pf(info, fault_addr, error_code);
- return 0;
- } else if ((shadow_pml4e_access != PT_ACCESS_NOT_PRESENT) &&
- (shadow_pml4e_access != PT_ACCESS_OK)) {
- // inject page fault in guest
- inject_guest_pf(info, fault_addr, error_code);
- PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pml4e_access);
- PrintDebug("Manual Says to inject page fault into guest\n");
- return 0;
- }
+ /* Was the page fault caused by the Guest's page tables? */
+ if (is_guest_pf(guest_pml4e_access, shadow_pml4e_access) == 1) {
+ PrintDebug("Injecting PML4E pf to guest: (guest access error=%d) (pf error code=%d)\n",
+ *(uint_t *)&guest_pml4e_access, *(uint_t *)&error_code);
+ inject_guest_pf(info, fault_addr, error_code);
+ return 0;
+ }
+
+ if (shadow_pml4e_access == PT_ACCESS_USER_ERROR) {
+ //
+ // PML4 Entry marked non-user
+ //
+ PrintDebug("Shadow Paging User access error (shadow_pml4e_access=0x%x, guest_pml4e_access=0x%x)\n",
+ shadow_pml4e_access, guest_pml4e_access);
+ inject_guest_pf(info, fault_addr, error_code);
+ return 0;
+ } else if ((shadow_pml4e_access != PT_ACCESS_NOT_PRESENT) &&
+ (shadow_pml4e_access != PT_ACCESS_OK)) {
+ // inject page fault in guest
+ inject_guest_pf(info, fault_addr, error_code);
+ PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pml4e_access);
+ PrintDebug("Manual Says to inject page fault into guest\n");
+ return 0;
+ }
- pdpe64_t * shadow_pdp = NULL;
- pdpe64_t * guest_pdp = NULL;
+ pdpe64_t * shadow_pdp = NULL;
+ pdpe64_t * guest_pdp = NULL;
- // Get the next shadow page level, allocate if not present
+ // Get the next shadow page level, allocate if not present
- if (shadow_pml4e_access == PT_ACCESS_NOT_PRESENT) {
- struct shadow_page_data * shdw_page = create_new_shadow_pt(info);
- shadow_pdp = (pdpe64_t *)V3_VAddr((void *)shdw_page->page_pa);
+ if (shadow_pml4e_access == PT_ACCESS_NOT_PRESENT) {
+ struct shadow_page_data * shdw_page = create_new_shadow_pt(info);
+ shadow_pdp = (pdpe64_t *)V3_VAddr((void *)shdw_page->page_pa);
- shadow_pml4e->present = 1;
- shadow_pml4e->user_page = guest_pml4e->user_page;
- shadow_pml4e->writable = guest_pml4e->writable;
+ shadow_pml4e->present = 1;
+ shadow_pml4e->user_page = guest_pml4e->user_page;
+ shadow_pml4e->writable = guest_pml4e->writable;
- // VMM Specific options
- shadow_pml4e->write_through = 0;
- shadow_pml4e->cache_disable = 0;
- //
+ // VMM Specific options
+ shadow_pml4e->write_through = 0;
+ shadow_pml4e->cache_disable = 0;
+ //
- guest_pml4e->accessed = 1;
+ guest_pml4e->accessed = 1;
- shadow_pml4e->pdp_base_addr = PAGE_BASE_ADDR(shdw_page->page_pa);
- } else {
- shadow_pdp = (pdpe64_t *)V3_VAddr((void *)(addr_t)BASE_TO_PAGE_ADDR(shadow_pml4e->pdp_base_addr));
- }
+ shadow_pml4e->pdp_base_addr = PAGE_BASE_ADDR(shdw_page->page_pa);
+ } else {
+ shadow_pdp = (pdpe64_t *)V3_VAddr((void *)(addr_t)BASE_TO_PAGE_ADDR(shadow_pml4e->pdp_base_addr));
+ }
- // Continue processing at the next level
+ // Continue processing at the next level
- if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pml4e->pdp_base_addr), (addr_t *)&guest_pdp) == -1) {
- // Machine check the guest
- PrintDebug("Invalid Guest PDP Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pml4e->pdp_base_addr));
- v3_raise_exception(info, MC_EXCEPTION);
- return 0;
- }
+ if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pml4e->pdp_base_addr), (addr_t *)&guest_pdp) == -1) {
+ // Machine check the guest
+ PrintDebug("Invalid Guest PDP Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pml4e->pdp_base_addr));
+ v3_raise_exception(info, MC_EXCEPTION);
+ return 0;
+ }
- if (handle_pdpe_shadow_pagefault_64(info, fault_addr, error_code, shadow_pdp, guest_pdp) == -1) {
- PrintError("Error handling Page fault caused by PDPE\n");
- return -1;
- }
+ if (handle_pdpe_shadow_pagefault_64(info, fault_addr, error_code, shadow_pdp, guest_pdp) == -1) {
+ PrintError("Error handling Page fault caused by PDPE\n");
+ return -1;
+ }
- return 0;
+ return 0;
}
// For now we are not going to handle 1 Gigabyte pages
static int handle_pdpe_shadow_pagefault_64(struct guest_info * info, addr_t fault_addr, pf_error_t error_code,
pdpe64_t * shadow_pdp, pdpe64_t * guest_pdp) {
- pt_access_status_t guest_pdpe_access;
- pt_access_status_t shadow_pdpe_access;
- pdpe64_t * guest_pdpe = (pdpe64_t *)&(guest_pdp[PDPE64_INDEX(fault_addr)]);
- pdpe64_t * shadow_pdpe = (pdpe64_t *)&(shadow_pdp[PDPE64_INDEX(fault_addr)]);
+ pt_access_status_t guest_pdpe_access;
+ pt_access_status_t shadow_pdpe_access;
+ pdpe64_t * guest_pdpe = (pdpe64_t *)&(guest_pdp[PDPE64_INDEX(fault_addr)]);
+ pdpe64_t * shadow_pdpe = (pdpe64_t *)&(shadow_pdp[PDPE64_INDEX(fault_addr)]);
- PrintDebug("Handling PDP fault\n");
+ PrintDebug("Handling PDP fault\n");
- if (fault_addr==0) {
- PrintDebug("Guest Page Tree for guest virtual address zero fault\n");
- PrintGuestPageTree(info,fault_addr,(addr_t)(info->shdw_pg_state.guest_cr3));
- PrintDebug("Host Page Tree for guest virtual address zero fault\n");
- PrintHostPageTree(info,fault_addr,(addr_t)(info->ctrl_regs.cr3));
- }
+ if (fault_addr==0) {
+ PrintDebug("Guest Page Tree for guest virtual address zero fault\n");
+ PrintGuestPageTree(info,fault_addr,(addr_t)(info->shdw_pg_state.guest_cr3));
+ PrintDebug("Host Page Tree for guest virtual address zero fault\n");
+ PrintHostPageTree(info,fault_addr,(addr_t)(info->ctrl_regs.cr3));
+ }
- // Check the guest page permissions
- guest_pdpe_access = v3_can_access_pdpe64(guest_pdp, fault_addr, error_code);
+ // Check the guest page permissions
+ guest_pdpe_access = v3_can_access_pdpe64(guest_pdp, fault_addr, error_code);
- // Check the shadow page permissions
- shadow_pdpe_access = v3_can_access_pdpe64(shadow_pdp, fault_addr, error_code);
+ // Check the shadow page permissions
+ shadow_pdpe_access = v3_can_access_pdpe64(shadow_pdp, fault_addr, error_code);
- /* Was the page fault caused by the Guest's page tables? */
- if (is_guest_pf(guest_pdpe_access, shadow_pdpe_access) == 1) {
- PrintDebug("Injecting PDPE pf to guest: (guest access error=%d) (pf error code=%d)\n",
- *(uint_t *)&guest_pdpe_access, *(uint_t *)&error_code);
- inject_guest_pf(info, fault_addr, error_code);
- return 0;
- }
-
- if (shadow_pdpe_access == PT_ACCESS_USER_ERROR) {
- //
- // PML4 Entry marked non-user
- //
- PrintDebug("Shadow Paging User access error (shadow_pdpe_access=0x%x, guest_pdpe_access=0x%x)\n",
- shadow_pdpe_access, guest_pdpe_access);
- inject_guest_pf(info, fault_addr, error_code);
- return 0;
- } else if ((shadow_pdpe_access != PT_ACCESS_NOT_PRESENT) &&
- (shadow_pdpe_access != PT_ACCESS_OK)) {
- // inject page fault in guest
- inject_guest_pf(info, fault_addr, error_code);
- PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pdpe_access);
- PrintDebug("Manual Says to inject page fault into guest\n");
- return 0;
- }
+ /* Was the page fault caused by the Guest's page tables? */
+ if (is_guest_pf(guest_pdpe_access, shadow_pdpe_access) == 1) {
+ PrintDebug("Injecting PDPE pf to guest: (guest access error=%d) (pf error code=%d)\n",
+ *(uint_t *)&guest_pdpe_access, *(uint_t *)&error_code);
+ inject_guest_pf(info, fault_addr, error_code);
+ return 0;
+ }
+
+ if (shadow_pdpe_access == PT_ACCESS_USER_ERROR) {
+ //
+ // PML4 Entry marked non-user
+ //
+ PrintDebug("Shadow Paging User access error (shadow_pdpe_access=0x%x, guest_pdpe_access=0x%x)\n",
+ shadow_pdpe_access, guest_pdpe_access);
+ inject_guest_pf(info, fault_addr, error_code);
+ return 0;
+ } else if ((shadow_pdpe_access != PT_ACCESS_NOT_PRESENT) &&
+ (shadow_pdpe_access != PT_ACCESS_OK)) {
+ // inject page fault in guest
+ inject_guest_pf(info, fault_addr, error_code);
+ PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pdpe_access);
+ PrintDebug("Manual Says to inject page fault into guest\n");
+ return 0;
+ }
- pde64_t * shadow_pd = NULL;
- pde64_t * guest_pd = NULL;
+ pde64_t * shadow_pd = NULL;
+ pde64_t * guest_pd = NULL;
- // Get the next shadow page level, allocate if not present
+ // Get the next shadow page level, allocate if not present
- if (shadow_pdpe_access == PT_ACCESS_NOT_PRESENT) {
- struct shadow_page_data * shdw_page = create_new_shadow_pt(info);
- shadow_pd = (pde64_t *)V3_VAddr((void *)shdw_page->page_pa);
+ if (shadow_pdpe_access == PT_ACCESS_NOT_PRESENT) {
+ struct shadow_page_data * shdw_page = create_new_shadow_pt(info);
+ shadow_pd = (pde64_t *)V3_VAddr((void *)shdw_page->page_pa);
- shadow_pdpe->present = 1;
- shadow_pdpe->user_page = guest_pdpe->user_page;
- shadow_pdpe->writable = guest_pdpe->writable;
+ shadow_pdpe->present = 1;
+ shadow_pdpe->user_page = guest_pdpe->user_page;
+ shadow_pdpe->writable = guest_pdpe->writable;
- // VMM Specific options
- shadow_pdpe->write_through = 0;
- shadow_pdpe->cache_disable = 0;
- //
+ // VMM Specific options
+ shadow_pdpe->write_through = 0;
+ shadow_pdpe->cache_disable = 0;
+ //
- guest_pdpe->accessed = 1;
+ guest_pdpe->accessed = 1;
- shadow_pdpe->pd_base_addr = PAGE_BASE_ADDR(shdw_page->page_pa);
- } else {
- shadow_pd = (pde64_t *)V3_VAddr((void *)(addr_t)BASE_TO_PAGE_ADDR(shadow_pdpe->pd_base_addr));
- }
+ shadow_pdpe->pd_base_addr = PAGE_BASE_ADDR(shdw_page->page_pa);
+ } else {
+ shadow_pd = (pde64_t *)V3_VAddr((void *)(addr_t)BASE_TO_PAGE_ADDR(shadow_pdpe->pd_base_addr));
+ }
- // Continue processing at the next level
+ // Continue processing at the next level
- if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pdpe->pd_base_addr), (addr_t *)&guest_pd) == -1) {
- // Machine check the guest
- PrintDebug("Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pdpe->pd_base_addr));
- v3_raise_exception(info, MC_EXCEPTION);
- return 0;
- }
+ if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pdpe->pd_base_addr), (addr_t *)&guest_pd) == -1) {
+ // Machine check the guest
+ PrintDebug("Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pdpe->pd_base_addr));
+ v3_raise_exception(info, MC_EXCEPTION);
+ return 0;
+ }
- if (handle_pde_shadow_pagefault_64(info, fault_addr, error_code, shadow_pd, guest_pd) == -1) {
- PrintError("Error handling Page fault caused by PDE\n");
- return -1;
- }
+ if (handle_pde_shadow_pagefault_64(info, fault_addr, error_code, shadow_pd, guest_pd) == -1) {
+ PrintError("Error handling Page fault caused by PDE\n");
+ return -1;
+ }
- return 0;
+ return 0;
}
static int handle_pde_shadow_pagefault_64(struct guest_info * info, addr_t fault_addr, pf_error_t error_code,
pde64_t * shadow_pd, pde64_t * guest_pd) {
- pt_access_status_t guest_pde_access;
- pt_access_status_t shadow_pde_access;
- pde64_t * guest_pde = (pde64_t *)&(guest_pd[PDE64_INDEX(fault_addr)]);
- pde64_t * shadow_pde = (pde64_t *)&(shadow_pd[PDE64_INDEX(fault_addr)]);
+ pt_access_status_t guest_pde_access;
+ pt_access_status_t shadow_pde_access;
+ pde64_t * guest_pde = (pde64_t *)&(guest_pd[PDE64_INDEX(fault_addr)]);
+ pde64_t * shadow_pde = (pde64_t *)&(shadow_pd[PDE64_INDEX(fault_addr)]);
- PrintDebug("Handling PDE fault\n");
+ PrintDebug("Handling PDE fault\n");
- // Check the guest page permissions
- guest_pde_access = v3_can_access_pde64(guest_pd, fault_addr, error_code);
+ // Check the guest page permissions
+ guest_pde_access = v3_can_access_pde64(guest_pd, fault_addr, error_code);
- // Check the shadow page permissions
- shadow_pde_access = v3_can_access_pde64(shadow_pd, fault_addr, error_code);
+ // Check the shadow page permissions
+ shadow_pde_access = v3_can_access_pde64(shadow_pd, fault_addr, error_code);
- /* Was the page fault caused by the Guest's page tables? */
- if (is_guest_pf(guest_pde_access, shadow_pde_access) == 1) {
- PrintDebug("Injecting PDE pf to guest: (guest access error=%d) (pf error code=%d)\n",
- *(uint_t *)&guest_pde_access, *(uint_t *)&error_code);
- inject_guest_pf(info, fault_addr, error_code);
- return 0;
- }
-
- if (shadow_pde_access == PT_ACCESS_USER_ERROR) {
- //
- // PDE Entry marked non-user
- //
- PrintDebug("Shadow Paging User access error (shadow_pdpe_access=0x%x, guest_pdpe_access=0x%x)\n",
- shadow_pde_access, guest_pde_access);
- inject_guest_pf(info, fault_addr, error_code);
- return 0;
+ /* Was the page fault caused by the Guest's page tables? */
+ if (is_guest_pf(guest_pde_access, shadow_pde_access) == 1) {
+ PrintDebug("Injecting PDE pf to guest: (guest access error=%d) (pf error code=%d)\n",
+ *(uint_t *)&guest_pde_access, *(uint_t *)&error_code);
+ inject_guest_pf(info, fault_addr, error_code);
+ return 0;
+ }
- } else if ((shadow_pde_access == PT_ACCESS_WRITE_ERROR) &&
- (guest_pde->large_page == 1)) {
+ if (shadow_pde_access == PT_ACCESS_USER_ERROR) {
+ //
+ // PDE Entry marked non-user
+ //
+ PrintDebug("Shadow Paging User access error (shadow_pdpe_access=0x%x, guest_pdpe_access=0x%x)\n",
+ shadow_pde_access, guest_pde_access);
+ inject_guest_pf(info, fault_addr, error_code);
+ return 0;
- ((pde64_2MB_t *)guest_pde)->dirty = 1;
- shadow_pde->writable = guest_pde->writable;
+ } else if ((shadow_pde_access == PT_ACCESS_WRITE_ERROR) &&
+ (guest_pde->large_page == 1)) {
- //PrintDebug("Returning due to large page Write Error\n");
- //PrintHostPageTree(info, fault_addr, info->ctrl_regs.cr3);
+ ((pde64_2MB_t *)guest_pde)->dirty = 1;
+ shadow_pde->writable = guest_pde->writable;
- return 0;
- } else if ((shadow_pde_access != PT_ACCESS_NOT_PRESENT) &&
- (shadow_pde_access != PT_ACCESS_OK)) {
- // inject page fault in guest
- inject_guest_pf(info, fault_addr, error_code);
- PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pde_access);
- PrintDebug("Manual Says to inject page fault into guest\n");
- return 0;
- }
+ //PrintDebug("Returning due to large page Write Error\n");
+ //PrintHostPageTree(info, fault_addr, info->ctrl_regs.cr3);
+
+ return 0;
+ } else if ((shadow_pde_access != PT_ACCESS_NOT_PRESENT) &&
+ (shadow_pde_access != PT_ACCESS_OK)) {
+ // inject page fault in guest
+ inject_guest_pf(info, fault_addr, error_code);
+ PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pde_access);
+ PrintDebug("Manual Says to inject page fault into guest\n");
+ return 0;
+ }
- pte64_t * shadow_pt = NULL;
- pte64_t * guest_pt = NULL;
+ pte64_t * shadow_pt = NULL;
+ pte64_t * guest_pt = NULL;
- // Get the next shadow page level, allocate if not present
+ // Get the next shadow page level, allocate if not present
- if (shadow_pde_access == PT_ACCESS_NOT_PRESENT) {
- struct shadow_page_data * shdw_page = create_new_shadow_pt(info);
- shadow_pt = (pte64_t *)V3_VAddr((void *)shdw_page->page_pa);
+ if (shadow_pde_access == PT_ACCESS_NOT_PRESENT) {
+ struct shadow_page_data * shdw_page = create_new_shadow_pt(info);
+ shadow_pt = (pte64_t *)V3_VAddr((void *)shdw_page->page_pa);
- PrintDebug("Creating new shadow PT: %p\n", shadow_pt);
+ PrintDebug("Creating new shadow PT: %p\n", shadow_pt);
- shadow_pde->present = 1;
- shadow_pde->user_page = guest_pde->user_page;
+ shadow_pde->present = 1;
+ shadow_pde->user_page = guest_pde->user_page;
- if (guest_pde->large_page == 0) {
- shadow_pde->writable = guest_pde->writable;
- } else {
- // This large page flag is temporary until we can get a working cache....
- ((pde64_2MB_t *)guest_pde)->vmm_info = V3_LARGE_PG;
+ if (guest_pde->large_page == 0) {
+ shadow_pde->writable = guest_pde->writable;
+ } else {
+ // This large page flag is temporary until we can get a working cache....
+ ((pde64_2MB_t *)guest_pde)->vmm_info = V3_LARGE_PG;
- if (error_code.write) {
- shadow_pde->writable = guest_pde->writable;
- ((pde64_2MB_t *)guest_pde)->dirty = 1;
- } else {
- shadow_pde->writable = 0;
- ((pde64_2MB_t *)guest_pde)->dirty = 0;
- }
- }
+ if (error_code.write) {
+ shadow_pde->writable = guest_pde->writable;
+ ((pde64_2MB_t *)guest_pde)->dirty = 1;
+ } else {
+ shadow_pde->writable = 0;
+ ((pde64_2MB_t *)guest_pde)->dirty = 0;
+ }
+ }
- // VMM Specific options
- shadow_pde->write_through = 0;
- shadow_pde->cache_disable = 0;
- shadow_pde->global_page = 0;
- //
+ // VMM Specific options
+ shadow_pde->write_through = 0;
+ shadow_pde->cache_disable = 0;
+ shadow_pde->global_page = 0;
+ //
- guest_pde->accessed = 1;
+ guest_pde->accessed = 1;
- shadow_pde->pt_base_addr = PAGE_BASE_ADDR(shdw_page->page_pa);
- } else {
- shadow_pt = (pte64_t *)V3_VAddr((void *)BASE_TO_PAGE_ADDR(shadow_pde->pt_base_addr));
- }
-
- // Continue processing at the next level
- if (guest_pde->large_page == 0) {
- if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pde->pt_base_addr), (addr_t *)&guest_pt) == -1) {
- // Machine check the guest
- PrintDebug("Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pde->pt_base_addr));
- v3_raise_exception(info, MC_EXCEPTION);
- return 0;
+ shadow_pde->pt_base_addr = PAGE_BASE_ADDR(shdw_page->page_pa);
+ } else {
+ shadow_pt = (pte64_t *)V3_VAddr((void *)BASE_TO_PAGE_ADDR(shadow_pde->pt_base_addr));
}
+
+ // Continue processing at the next level
+ if (guest_pde->large_page == 0) {
+ if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pde->pt_base_addr), (addr_t *)&guest_pt) == -1) {
+ // Machine check the guest
+ PrintDebug("Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pde->pt_base_addr));
+ v3_raise_exception(info, MC_EXCEPTION);
+ return 0;
+ }
- if (handle_pte_shadow_pagefault_64(info, fault_addr, error_code, shadow_pt, guest_pt) == -1) {
- PrintError("Error handling Page fault caused by PDE\n");
- return -1;
+ if (handle_pte_shadow_pagefault_64(info, fault_addr, error_code, shadow_pt, guest_pt) == -1) {
+ PrintError("Error handling Page fault caused by PDE\n");
+ return -1;
+ }
+ } else {
+ if (handle_2MB_shadow_pagefault_64(info, fault_addr, error_code, shadow_pt, (pde64_2MB_t *)guest_pde) == -1) {
+ PrintError("Error handling large pagefault\n");
+ return -1;
+ }
}
- } else {
- if (handle_2MB_shadow_pagefault_64(info, fault_addr, error_code, shadow_pt, (pde64_2MB_t *)guest_pde) == -1) {
- PrintError("Error handling large pagefault\n");
- return -1;
- }
- }
- return 0;
+ return 0;
}
static int handle_pte_shadow_pagefault_64(struct guest_info * info, addr_t fault_addr, pf_error_t error_code,
pte64_t * shadow_pt, pte64_t * guest_pt) {
- pt_access_status_t guest_pte_access;
- pt_access_status_t shadow_pte_access;
- pte64_t * guest_pte = (pte64_t *)&(guest_pt[PTE64_INDEX(fault_addr)]);;
- pte64_t * shadow_pte = (pte64_t *)&(shadow_pt[PTE64_INDEX(fault_addr)]);
- addr_t guest_pa = BASE_TO_PAGE_ADDR((addr_t)(guest_pte->page_base_addr)) + PAGE_OFFSET(fault_addr);
- // struct shadow_page_state * state = &(info->shdw_pg_state);
+ pt_access_status_t guest_pte_access;
+ pt_access_status_t shadow_pte_access;
+ pte64_t * guest_pte = (pte64_t *)&(guest_pt[PTE64_INDEX(fault_addr)]);;
+ pte64_t * shadow_pte = (pte64_t *)&(shadow_pt[PTE64_INDEX(fault_addr)]);
+ addr_t guest_pa = BASE_TO_PAGE_ADDR((addr_t)(guest_pte->page_base_addr)) + PAGE_OFFSET(fault_addr);
+ // struct shadow_page_state * state = &(info->shdw_pg_state);
- PrintDebug("Handling PTE fault\n");
+ PrintDebug("Handling PTE fault\n");
- struct v3_shadow_region * shdw_reg = v3_get_shadow_region(info, guest_pa);
+ struct v3_shadow_region * shdw_reg = v3_get_shadow_region(info, guest_pa);
- if ((shdw_reg == NULL) ||
- (shdw_reg->host_type == SHDW_REGION_INVALID)) {
- // Inject a machine check in the guest
- PrintDebug("Invalid Guest Address in page table (0x%p)\n", (void *)guest_pa);
- v3_raise_exception(info, MC_EXCEPTION);
- return 0;
- }
+ if ((shdw_reg == NULL) ||
+ (shdw_reg->host_type == SHDW_REGION_INVALID)) {
+ // Inject a machine check in the guest
+ PrintDebug("Invalid Guest Address in page table (0x%p)\n", (void *)guest_pa);
+ v3_raise_exception(info, MC_EXCEPTION);
+ return 0;
+ }
- // Check the guest page permissions
- guest_pte_access = v3_can_access_pte64(guest_pt, fault_addr, error_code);
+ // Check the guest page permissions
+ guest_pte_access = v3_can_access_pte64(guest_pt, fault_addr, error_code);
- // Check the shadow page permissions
- shadow_pte_access = v3_can_access_pte64(shadow_pt, fault_addr, error_code);
+ // Check the shadow page permissions
+ shadow_pte_access = v3_can_access_pte64(shadow_pt, fault_addr, error_code);
- /* Was the page fault caused by the Guest's page tables? */
- if (is_guest_pf(guest_pte_access, shadow_pte_access) == 1) {
- PrintDebug("Access error injecting pf to guest (guest access error=%d) (pf error code=%d)\n",
- guest_pte_access, *(uint_t*)&error_code);
- inject_guest_pf(info, fault_addr, error_code);
- return 0;
- }
+ /* Was the page fault caused by the Guest's page tables? */
+ if (is_guest_pf(guest_pte_access, shadow_pte_access) == 1) {
+ PrintDebug("Access error injecting pf to guest (guest access error=%d) (pf error code=%d)\n",
+ guest_pte_access, *(uint_t*)&error_code);
+ inject_guest_pf(info, fault_addr, error_code);
+ return 0;
+ }
- if (shadow_pte_access == PT_ACCESS_OK) {
- // Inconsistent state...
- // Guest Re-Entry will flush page tables and everything should now work
- PrintDebug("Inconsistent state... Guest re-entry should flush tlb\n");
- return 0;
- }
+ if (shadow_pte_access == PT_ACCESS_OK) {
+ // Inconsistent state...
+ // Guest Re-Entry will flush page tables and everything should now work
+ PrintDebug("Inconsistent state... Guest re-entry should flush tlb\n");
+ return 0;
+ }
- if (shadow_pte_access == PT_ACCESS_NOT_PRESENT) {
- // Page Table Entry Not Present
- PrintDebug("guest_pa =%p\n", (void *)guest_pa);
+ if (shadow_pte_access == PT_ACCESS_NOT_PRESENT) {
+ // Page Table Entry Not Present
+ PrintDebug("guest_pa =%p\n", (void *)guest_pa);
- if ((shdw_reg->host_type == SHDW_REGION_ALLOCATED) ||
- (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK)) {
- addr_t shadow_pa = v3_get_shadow_addr(shdw_reg, guest_pa);
+ if ((shdw_reg->host_type == SHDW_REGION_ALLOCATED) ||
+ (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK)) {
+ addr_t shadow_pa = v3_get_shadow_addr(shdw_reg, guest_pa);
- shadow_pte->page_base_addr = PAGE_BASE_ADDR(shadow_pa);
+ shadow_pte->page_base_addr = PAGE_BASE_ADDR(shadow_pa);
- shadow_pte->present = guest_pte->present;
- shadow_pte->user_page = guest_pte->user_page;
+ shadow_pte->present = guest_pte->present;
+ shadow_pte->user_page = guest_pte->user_page;
- //set according to VMM policy
- shadow_pte->write_through = 0;
- shadow_pte->cache_disable = 0;
- shadow_pte->global_page = 0;
- //
+ //set according to VMM policy
+ shadow_pte->write_through = 0;
+ shadow_pte->cache_disable = 0;
+ shadow_pte->global_page = 0;
+ //
- guest_pte->accessed = 1;
+ guest_pte->accessed = 1;
- if (guest_pte->dirty == 1) {
- shadow_pte->writable = guest_pte->writable;
- } else if ((guest_pte->dirty == 0) && (error_code.write == 1)) {
- shadow_pte->writable = guest_pte->writable;
+ if (guest_pte->dirty == 1) {
+ shadow_pte->writable = guest_pte->writable;
+ } else if ((guest_pte->dirty == 0) && (error_code.write == 1)) {
+ shadow_pte->writable = guest_pte->writable;
+ guest_pte->dirty = 1;
+ } else if ((guest_pte->dirty == 0) && (error_code.write == 0)) {
+ shadow_pte->writable = 0;
+ }
+
+ // dirty flag has been set, check if its in the cache
+ /* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_pa)) != NULL) { */
+ /* if (error_code.write == 1) { */
+ /* state->cached_cr3 = 0; */
+ /* shadow_pte->writable = guest_pte->writable; */
+ /* } else { */
+ /* shadow_pte->writable = 0; */
+ /* } */
+ /* } */
+
+ // Write hooks trump all, and are set Read Only
+ if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
+ shadow_pte->writable = 0;
+ }
+
+ } else {
+ // Page fault handled by hook functions
+
+ if (v3_handle_mem_full_hook(info, fault_addr, guest_pa, shdw_reg, error_code) == -1) {
+ PrintError("Special Page fault handler returned error for address: %p\n", (void *)fault_addr);
+ return -1;
+ }
+ }
+ } else if (shadow_pte_access == PT_ACCESS_WRITE_ERROR) {
guest_pte->dirty = 1;
- } else if ((guest_pte->dirty == 0) && (error_code.write == 0)) {
- shadow_pte->writable = 0;
- }
-
- // dirty flag has been set, check if its in the cache
-/* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_pa)) != NULL) { */
-/* if (error_code.write == 1) { */
-/* state->cached_cr3 = 0; */
-/* shadow_pte->writable = guest_pte->writable; */
-/* } else { */
-/* shadow_pte->writable = 0; */
-/* } */
-/* } */
-
- // Write hooks trump all, and are set Read Only
- if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
- shadow_pte->writable = 0;
- }
- } else {
- // Page fault handled by hook functions
+ if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
+ if (v3_handle_mem_wr_hook(info, fault_addr, guest_pa, shdw_reg, error_code) == -1) {
+ PrintError("Special Page fault handler returned error for address: %p\n", (void *)fault_addr);
+ return -1;
+ }
+ } else {
+ PrintDebug("Shadow PTE Write Error\n");
+ shadow_pte->writable = guest_pte->writable;
+ }
- if (v3_handle_mem_full_hook(info, fault_addr, guest_pa, shdw_reg, error_code) == -1) {
- PrintError("Special Page fault handler returned error for address: %p\n", (void *)fault_addr);
- return -1;
- }
- }
- } else if (shadow_pte_access == PT_ACCESS_WRITE_ERROR) {
- guest_pte->dirty = 1;
+ /* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_pa)) != NULL) { */
+ /* struct shadow_page_state * state = &(info->shdw_pg_state); */
+ /* PrintDebug("Write operation on Guest PAge Table Page\n"); */
+ /* state->cached_cr3 = 0; */
+ /* } */
+
+ return 0;
- if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
- if (v3_handle_mem_wr_hook(info, fault_addr, guest_pa, shdw_reg, error_code) == -1) {
- PrintError("Special Page fault handler returned error for address: %p\n", (void *)fault_addr);
- return -1;
- }
} else {
- PrintDebug("Shadow PTE Write Error\n");
- shadow_pte->writable = guest_pte->writable;
+ // Inject page fault into the guest
+ inject_guest_pf(info, fault_addr, error_code);
+ PrintError("PTE Page fault fell through... Not sure if this should ever happen\n");
+ PrintError("Manual Says to inject page fault into guest\n");
+ return -1;
}
-/* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_pa)) != NULL) { */
-/* struct shadow_page_state * state = &(info->shdw_pg_state); */
-/* PrintDebug("Write operation on Guest PAge Table Page\n"); */
-/* state->cached_cr3 = 0; */
-/* } */
-
return 0;
-
- } else {
- // Inject page fault into the guest
- inject_guest_pf(info, fault_addr, error_code);
- PrintError("PTE Page fault fell through... Not sure if this should ever happen\n");
- PrintError("Manual Says to inject page fault into guest\n");
- return -1;
- }
-
- return 0;
}
addr_t fault_addr, pf_error_t error_code,
pte64_t * shadow_pt, pde64_2MB_t * large_guest_pde)
{
- pt_access_status_t shadow_pte_access = v3_can_access_pte64(shadow_pt, fault_addr, error_code);
- pte64_t * shadow_pte = (pte64_t *)&(shadow_pt[PTE64_INDEX(fault_addr)]);
- addr_t guest_fault_pa = BASE_TO_PAGE_ADDR_2MB(large_guest_pde->page_base_addr) + PAGE_OFFSET_2MB(fault_addr);
- // struct shadow_page_state * state = &(info->shdw_pg_state);
+ pt_access_status_t shadow_pte_access = v3_can_access_pte64(shadow_pt, fault_addr, error_code);
+ pte64_t * shadow_pte = (pte64_t *)&(shadow_pt[PTE64_INDEX(fault_addr)]);
+ addr_t guest_fault_pa = BASE_TO_PAGE_ADDR_2MB(large_guest_pde->page_base_addr) + PAGE_OFFSET_2MB(fault_addr);
+ // struct shadow_page_state * state = &(info->shdw_pg_state);
- PrintDebug("Handling 2MB fault (guest_fault_pa=%p) (error_code=%x)\n", (void *)guest_fault_pa, *(uint_t*)&error_code);
- PrintDebug("ShadowPT=%p, LargeGuestPDE=%p\n", shadow_pt, large_guest_pde);
+ PrintDebug("Handling 2MB fault (guest_fault_pa=%p) (error_code=%x)\n", (void *)guest_fault_pa, *(uint_t*)&error_code);
+ PrintDebug("ShadowPT=%p, LargeGuestPDE=%p\n", shadow_pt, large_guest_pde);
- struct v3_shadow_region * shdw_reg = v3_get_shadow_region(info, guest_fault_pa);
+ struct v3_shadow_region * shdw_reg = v3_get_shadow_region(info, guest_fault_pa);
- if ((shdw_reg == NULL) ||
- (shdw_reg->host_type == SHDW_REGION_INVALID)) {
- // Inject a machine check in the guest
- PrintDebug("Invalid Guest Address in page table (0x%p)\n", (void *)guest_fault_pa);
- v3_raise_exception(info, MC_EXCEPTION);
- return -1;
- }
+ if ((shdw_reg == NULL) ||
+ (shdw_reg->host_type == SHDW_REGION_INVALID)) {
+ // Inject a machine check in the guest
+ PrintDebug("Invalid Guest Address in page table (0x%p)\n", (void *)guest_fault_pa);
+ v3_raise_exception(info, MC_EXCEPTION);
+ return -1;
+ }
- if (shadow_pte_access == PT_ACCESS_OK) {
- // Inconsistent state...
- // Guest Re-Entry will flush tables and everything should now workd
- PrintDebug("Inconsistent state... Guest re-entry should flush tlb\n");
- //PrintHostPageTree(info, fault_addr, info->ctrl_regs.cr3);
- return 0;
- }
+ if (shadow_pte_access == PT_ACCESS_OK) {
+ // Inconsistent state...
+ // Guest Re-Entry will flush tables and everything should now workd
+ PrintDebug("Inconsistent state... Guest re-entry should flush tlb\n");
+ //PrintHostPageTree(info, fault_addr, info->ctrl_regs.cr3);
+ return 0;
+ }
- if (shadow_pte_access == PT_ACCESS_NOT_PRESENT) {
- // Get the guest physical address of the fault
+ if (shadow_pte_access == PT_ACCESS_NOT_PRESENT) {
+ // Get the guest physical address of the fault
- if ((shdw_reg->host_type == SHDW_REGION_ALLOCATED) ||
- (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK)) {
- addr_t shadow_pa = v3_get_shadow_addr(shdw_reg, guest_fault_pa);
+ if ((shdw_reg->host_type == SHDW_REGION_ALLOCATED) ||
+ (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK)) {
+ addr_t shadow_pa = v3_get_shadow_addr(shdw_reg, guest_fault_pa);
- PrintDebug("Shadow PA=%p, ShadowPTE=%p\n", (void *)shadow_pa, (void *)shadow_pte);
+ PrintDebug("Shadow PA=%p, ShadowPTE=%p\n", (void *)shadow_pa, (void *)shadow_pte);
- shadow_pte->page_base_addr = PAGE_BASE_ADDR(shadow_pa);
- PrintDebug("Test1\n");
+ shadow_pte->page_base_addr = PAGE_BASE_ADDR(shadow_pa);
+ PrintDebug("Test1\n");
- shadow_pte->present = 1;
+ shadow_pte->present = 1;
- /* We are assuming that the PDE entry has precedence
- * so the Shadow PDE will mirror the guest PDE settings,
- * and we don't have to worry about them here
- * Allow everything
- */
- shadow_pte->user_page = 1;
+ /* We are assuming that the PDE entry has precedence
+ * so the Shadow PDE will mirror the guest PDE settings,
+ * and we don't have to worry about them here
+ * Allow everything
+ */
+ shadow_pte->user_page = 1;
-/* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_fault_pa)) != NULL) { */
-/* // Check if the entry is a page table... */
-/* PrintDebug("Marking page as Guest Page Table (large page)\n"); */
-/* shadow_pte->writable = 0; */
-/* } else */ if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
- shadow_pte->writable = 0;
- } else {
- shadow_pte->writable = 1;
- }
+ /* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_fault_pa)) != NULL) { */
+ /* // Check if the entry is a page table... */
+ /* PrintDebug("Marking page as Guest Page Table (large page)\n"); */
+ /* shadow_pte->writable = 0; */
+ /* } else */ if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
+ shadow_pte->writable = 0;
+ } else {
+ shadow_pte->writable = 1;
+ }
- //set according to VMM policy
- shadow_pte->write_through = 0;
- shadow_pte->cache_disable = 0;
- shadow_pte->global_page = 0;
- //
+ //set according to VMM policy
+ shadow_pte->write_through = 0;
+ shadow_pte->cache_disable = 0;
+ shadow_pte->global_page = 0;
+ //
- } else {
- // Handle hooked pages as well as other special pages
- // if (handle_special_page_fault(info, fault_addr, guest_fault_pa, error_code) == -1) {
+ } else {
+ // Handle hooked pages as well as other special pages
+ // if (handle_special_page_fault(info, fault_addr, guest_fault_pa, error_code) == -1) {
- if (v3_handle_mem_full_hook(info, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) {
- PrintError("Special Page Fault handler returned error for address: %p\n", (void *)fault_addr);
- return -1;
- }
- }
- } else if (shadow_pte_access == PT_ACCESS_WRITE_ERROR) {
+ if (v3_handle_mem_full_hook(info, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) {
+ PrintError("Special Page Fault handler returned error for address: %p\n", (void *)fault_addr);
+ return -1;
+ }
+ }
+ } else if (shadow_pte_access == PT_ACCESS_WRITE_ERROR) {
- if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
+ if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
- if (v3_handle_mem_wr_hook(info, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) {
- PrintError("Special Page Fault handler returned error for address: %p\n", (void *)fault_addr);
- return -1;
- }
- }
+ if (v3_handle_mem_wr_hook(info, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) {
+ PrintError("Special Page Fault handler returned error for address: %p\n", (void *)fault_addr);
+ return -1;
+ }
+ }
-/* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_fault_pa)) != NULL) { */
-/* struct shadow_page_state * state = &(info->shdw_pg_state); */
-/* PrintDebug("Write operation on Guest PAge Table Page (large page)\n"); */
-/* state->cached_cr3 = 0; */
-/* shadow_pte->writable = 1; */
-/* } */
+ /* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_fault_pa)) != NULL) { */
+ /* struct shadow_page_state * state = &(info->shdw_pg_state); */
+ /* PrintDebug("Write operation on Guest PAge Table Page (large page)\n"); */
+ /* state->cached_cr3 = 0; */
+ /* shadow_pte->writable = 1; */
+ /* } */
- } else {
- PrintError("Error in large page fault handler...\n");
- PrintError("This case should have been handled at the top level handler\n");
- return -1;
- }
+ } else {
+ PrintError("Error in large page fault handler...\n");
+ PrintError("This case should have been handled at the top level handler\n");
+ return -1;
+ }
- // PrintHostPageTree(info, fault_addr, info->ctrl_regs.cr3);
- PrintDebug("Returning from large page fault handler\n");
- return 0;
+ // PrintHostPageTree(info, fault_addr, info->ctrl_regs.cr3);
+ PrintDebug("Returning from large page fault handler\n");
+ return 0;
}
addr_t vaddr, addr_t page_ptr, addr_t page_pa,
void * private_data) {
- switch (type) {
- case PAGE_PML464:
- {
- pml4e64_t * pml = (pml4e64_t *)page_ptr;
-
- if (pml[PML4E64_INDEX(vaddr)].present == 0) {
- return 1;
- }
- return 0;
- }
- case PAGE_PDP64:
- {
- pdpe64_t * pdp = (pdpe64_t *)page_ptr;
- pdpe64_t * pdpe = &(pdp[PDPE64_INDEX(vaddr)]);
-
- if (pdpe->present == 0) {
- return 1;
- }
+ switch (type) {
+ case PAGE_PML464:
+ {
+ pml4e64_t * pml = (pml4e64_t *)page_ptr;
+
+ if (pml[PML4E64_INDEX(vaddr)].present == 0) {
+ return 1;
+ }
+ return 0;
+ }
+ case PAGE_PDP64:
+ {
+ pdpe64_t * pdp = (pdpe64_t *)page_ptr;
+ pdpe64_t * pdpe = &(pdp[PDPE64_INDEX(vaddr)]);
+
+ if (pdpe->present == 0) {
+ return 1;
+ }
- if (pdpe->vmm_info == V3_LARGE_PG) {
- PrintError("1 Gigabyte pages not supported\n");
- return -1;
-
- pdpe->present = 0;
- return 1;
- }
-
- return 0;
- }
- case PAGE_PD64:
- {
- pde64_t * pd = (pde64_t *)page_ptr;
- pde64_t * pde = &(pd[PDE64_INDEX(vaddr)]);
-
- if (pde->present == 0) {
- return 1;
- }
+ if (pdpe->vmm_info == V3_LARGE_PG) {
+ PrintError("1 Gigabyte pages not supported\n");
+ return -1;
+
+ pdpe->present = 0;
+ return 1;
+ }
+
+ return 0;
+ }
+ case PAGE_PD64:
+ {
+ pde64_t * pd = (pde64_t *)page_ptr;
+ pde64_t * pde = &(pd[PDE64_INDEX(vaddr)]);
+
+ if (pde->present == 0) {
+ return 1;
+ }
- if (pde->vmm_info == V3_LARGE_PG) {
- pde->present = 0;
- return 1;
- }
+ if (pde->vmm_info == V3_LARGE_PG) {
+ pde->present = 0;
+ return 1;
+ }
- return 0;
- }
- case PAGE_PT64:
- {
- pte64_t * pt = (pte64_t *)page_ptr;
+ return 0;
+ }
+ case PAGE_PT64:
+ {
+ pte64_t * pt = (pte64_t *)page_ptr;
- pt[PTE64_INDEX(vaddr)].present = 0;
+ pt[PTE64_INDEX(vaddr)].present = 0;
- return 1;
- }
- default:
- PrintError("Invalid Page Type\n");
- return -1;
+ return 1;
+ }
+ default:
+ PrintError("Invalid Page Type\n");
+ return -1;
- }
+ }
- // should not get here
- PrintError("Should not get here....\n");
- return -1;
+ // should not get here
+ PrintError("Should not get here....\n");
+ return -1;
}
static inline int handle_shadow_invlpg_64(struct guest_info * info, addr_t vaddr) {
- PrintDebug("INVLPG64 - %p\n",(void*)vaddr);
+ PrintDebug("INVLPG64 - %p\n",(void*)vaddr);
- int ret = v3_drill_host_pt_64(info, info->ctrl_regs.cr3, vaddr, invalidation_cb_64, NULL);
- if (ret == -1) {
- PrintError("Page table drill returned error.... \n");
- PrintHostPageTree(info, vaddr, info->ctrl_regs.cr3);
- }
+ int ret = v3_drill_host_pt_64(info, info->ctrl_regs.cr3, vaddr, invalidation_cb_64, NULL);
+ if (ret == -1) {
+ PrintError("Page table drill returned error.... \n");
+ PrintHostPageTree(info, vaddr, info->ctrl_regs.cr3);
+ }
- return (ret == -1) ? -1 : 0;
+ return (ret == -1) ? -1 : 0;
}
