addr_t gpa = BASE_TO_PAGE_ADDR_4KB(guest_cr3->pdt_base_addr);
struct shdw_pg_data * shdw_pg = NULL;
- PrintDebug("Activating 32 Bit cacheable page tables\n");
+ PrintDebug(core->vm_info, core, "Activating 32 Bit cacheable page tables\n");
shdw_pg = find_shdw_pt(core->vm_info, gpa, PAGE_PD32);
- PrintError("shdw_pg returned as %p\n", shdw_pg);
+ PrintError(core->vm_info, core, "shdw_pg returned as %p for CR3:%p\n", shdw_pg, (void *)gpa);
if (shdw_pg == NULL) {
shdw_pg = create_shdw_pt(core->vm_info, gpa, PAGE_PD32);
+
+ // update current reverse map entries...
+ // We are now using this page in a PT, so:
+ // any existing writable mappings must be updated
+ update_rmap_entries(core->vm_info, gpa);
}
- PrintDebug("shdw_pg now exists...\n");
+ PrintDebug(core->vm_info, core, "shdw_pg now exists...\n");
shadow_cr3->pdt_base_addr = PAGE_BASE_ADDR_4KB(shdw_pg->hpa);
shadow_cr3->pwt = guest_cr3->pwt;
pde32_t * guest_pde = NULL;
pde32_t * shadow_pde = (pde32_t *)&(shadow_pd[PDE32_INDEX(fault_addr)]);
- PrintDebug("Shadow cache page fault handler: %p\n", (void *)fault_addr );
- PrintDebug("Handling PDE32 Fault\n");
+ PrintDebug(core->vm_info, core, "Shadow cache page fault handler: %p\n", (void *)fault_addr );
+ PrintDebug(core->vm_info, core, "Handling PDE32 Fault\n");
if (v3_gpa_to_hva(core, guest_cr3, (addr_t*)&guest_pd) == -1) {
- PrintError("Invalid Guest PDE Address: 0x%p\n", (void *)guest_cr3);
+ PrintError(core->vm_info, core, "Invalid Guest PDE Address: 0x%p\n", (void *)guest_cr3);
return -1;
}
/* Was the page fault caused by the Guest's page tables? */
if (v3_is_guest_pf(guest_pde_access, shadow_pde_access) == 1) {
- PrintDebug("Injecting PDE pf to guest: (guest access error=%d) (shdw access error=%d) (pf error code=%d)\n",
+ PrintDebug(core->vm_info, core, "Injecting PDE pf to guest: (guest access error=%d) (shdw access error=%d) (pf error code=%d)\n",
*(uint_t *)&guest_pde_access, *(uint_t *)&shadow_pde_access, *(uint_t *)&error_code);
if (v3_inject_guest_pf(core, fault_addr, error_code) == -1) {
- PrintError("Could not inject guest page fault for vaddr %p\n", (void *)fault_addr);
+ PrintError(core->vm_info, core, "Could not inject guest page fault for vaddr %p\n", (void *)fault_addr);
return -1;
}
return 0;
//
// PDE Entry marked non user
//
- PrintDebug("Shadow Paging User access error (shadow_pde_access=0x%x, guest_pde_access=0x%x)\n",
+ PrintDebug(core->vm_info, core, "Shadow Paging User access error (shadow_pde_access=0x%x, guest_pde_access=0x%x)\n",
shadow_pde_access, guest_pde_access);
if (v3_inject_guest_pf(core, fault_addr, error_code) == -1) {
- PrintError("Could not inject guest page fault for vaddr %p\n", (void *)fault_addr);
+ PrintError(core->vm_info, core, "Could not inject guest page fault for vaddr %p\n", (void *)fault_addr);
return -1;
}
return 0;
(shadow_pde_access != PT_ACCESS_OK)) {
// inject page fault in guest
if (v3_inject_guest_pf(core, fault_addr, error_code) == -1) {
- PrintError("Could not inject guest page fault for vaddr %p\n", (void *)fault_addr);
+ PrintError(core->vm_info, core, "Could not inject guest page fault for vaddr %p\n", (void *)fault_addr);
return -1;
}
- PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pde_access);
- PrintDebug("Manual Says to inject page fault into guest\n");
+ PrintDebug(core->vm_info, core, "Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pde_access);
+ PrintDebug(core->vm_info, core, "Manual Says to inject page fault into guest\n");
return 0;
}
-
+
pte32_t * shadow_pt = NULL;
pte32_t * guest_pt = NULL;
/* Set up cache state */
addr_t gpa = BASE_TO_PAGE_ADDR_4KB(guest_pde->pt_base_addr);
-
+
struct shdw_pg_data * shdw_page = NULL;
page_type_t pt_type = PAGE_PT32;
if (shdw_page == NULL) {
shdw_page = create_shdw_pt(core->vm_info, gpa, pt_type);
- }
-
- // update current reverse map entries...
- // We are now using this page in a PT, so:
- // any existing writable mappings must be updated
- update_rmap_entries(core->vm_info, gpa);
+
+ if (pt_type == PAGE_PT32) {
+ // update current reverse map entries...
+ // We are now using this page in a PT, so:
+ // any existing writable mappings must be updated
+ update_rmap_entries(core->vm_info, gpa);
+ }
+ }
+
struct shdw_pg_data * parent_page = find_shdw_pt(core->vm_info, guest_cr3, PAGE_PD32);
uint32_t page_size = v3_get_max_page_size(core, gpa_4MB, PROTECTED);
if (page_size == PAGE_SIZE_4MB) {
- PrintDebug("using large page for fault_addr %p (gpa=%p)\n", (void *)fault_addr, (void *)gpa_4MB);
+ PrintDebug(core->vm_info, core, "using large page for fault_addr %p (gpa=%p)\n", (void *)fault_addr, (void *)gpa_4MB);
if (handle_4MB_shadow_pagefault_pde_32(core, fault_addr, error_code, shadow_pde_access,
(pde32_4MB_t *)shadow_pde, (pde32_4MB_t *)guest_pde) == -1) {
- PrintError("Error handling large pagefault with large page\n");
+ PrintError(core->vm_info, core, "Error handling large pagefault with large page\n");
return -1;
}
if (guest_pde->large_page == 0) {
if (v3_gpa_to_hva(core, 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));
+ PrintDebug(core->vm_info, core, "Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pde->pt_base_addr));
v3_raise_exception(core, MC_EXCEPTION);
return 0;
}
if (handle_pte_shadow_pagefault_32(core, fault_addr, error_code, shadow_pt, guest_pt, shdw_page) == -1) {
- PrintError("Error handling Page fault caused by PTE\n");
+ PrintError(core->vm_info, core, "Error handling Page fault caused by PTE\n");
return -1;
}
} else {
if (handle_4MB_shadow_pagefault_pte_32(core, fault_addr, error_code, shadow_pt, (pde32_4MB_t *)guest_pde, shdw_page) == -1) {
- PrintError("Error handling large pagefault\n");
+ PrintError(core->vm_info, core, "Error handling large pagefault\n");
return -1;
}
}
pte32_t * shadow_pte = (pte32_t *)&(shadow_pt[PTE32_INDEX(fault_addr)]);
addr_t guest_pa = BASE_TO_PAGE_ADDR((addr_t)(guest_pte->page_base_addr)) + PAGE_OFFSET(fault_addr);
- struct v3_mem_region * shdw_reg = v3_get_mem_region(core->vm_info, core->cpu_id, guest_pa);
+ struct v3_mem_region * shdw_reg = v3_get_mem_region(core->vm_info, core->vcpu_id, guest_pa);
if (shdw_reg == NULL) {
// Inject a machine check in the guest
- PrintDebug("Invalid Guest Address in page table (0x%p)\n", (void *)guest_pa);
+ PrintDebug(core->vm_info, core, "Invalid Guest Address in page table (0x%p)\n", (void *)guest_pa);
v3_raise_exception(core, MC_EXCEPTION);
return 0;
}
/* Was the page fault caused by the Guest's page tables? */
if (v3_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",
+ PrintDebug(core->vm_info, core, "Access error injecting pf to guest (guest access error=%d) (pf error code=%d)\n",
guest_pte_access, *(uint_t*)&error_code);
// inject:
if (v3_inject_guest_pf(core, fault_addr, error_code) == -1) {
- PrintError("Could not inject guest page fault for vaddr %p\n", (void *)fault_addr);
+ PrintError(core->vm_info, core, "Could not inject guest page fault for vaddr %p\n", (void *)fault_addr);
return -1;
}
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");
+ PrintDebug(core->vm_info, core, "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);
+ PrintDebug(core->vm_info, core, "guest_pa =%p\n", (void *)guest_pa);
if ((shdw_reg->flags.alloced == 1) && (shdw_reg->flags.read == 1)) {
addr_t shadow_pa = 0;
if (v3_gpa_to_hpa(core, guest_pa, &shadow_pa) == -1) {
- PrintError("could not translate page fault address (%p)\n", (void *)guest_pa);
+ PrintError(core->vm_info, core, "could not translate page fault address (%p)\n", (void *)guest_pa);
return -1;
}
shadow_pte->page_base_addr = PAGE_BASE_ADDR(shadow_pa);
- PrintDebug("\tMapping shadow page (%p)\n", (void *)BASE_TO_PAGE_ADDR(shadow_pte->page_base_addr));
+ PrintDebug(core->vm_info, core, "\tMapping shadow page (%p)\n", (void *)BASE_TO_PAGE_ADDR(shadow_pte->page_base_addr));
shadow_pte->present = guest_pte->present;
shadow_pte->user_page = guest_pte->user_page;
}
if (pt_page != NULL) {
+ PrintError(core->vm_info, core, "Found PT page (small), marking RD-ONLY (va=%p), (gpa=%p)\n",
+ (void *)fault_addr, (void *)pg_gpa);
// This is a page table page...
shadow_pte->writable = 0;
shadow_pte->vmm_info = V3_CACHED_PG;
// Page fault on unhandled memory region
if (shdw_reg->unhandled(core, fault_addr, guest_pa, shdw_reg, error_code) == -1) {
- PrintError("Special Page fault handler returned error for address: %p\n", (void *)fault_addr);
+ PrintError(core->vm_info, core, "Special Page fault handler returned error for address: %p\n", (void *)fault_addr);
return -1;
}
}
if (shadow_pte->vmm_info == V3_CACHED_PG) {
addr_t pg_gpa = PAGE_ADDR_4KB(guest_pa);
- PrintError("Evicting on a small page\n");
+ PrintError(core->vm_info, core, "Evicting on a small page\n");
if (evict_shdw_pg(core->vm_info, pg_gpa, PAGE_PD32) == -1) {
- PrintError("Error Evicting PAGE_PD32 cache entry\n");
+ PrintError(core->vm_info, core, "Error Evicting PAGE_PD32 cache entry\n");
return -1;
}
if (evict_shdw_pg(core->vm_info, pg_gpa, PAGE_PT32) == -1) {
- PrintError("Error Evicting PAGE_PT32 cache entry\n");
+ PrintError(core->vm_info, core, "Error Evicting PAGE_PT32 cache entry\n");
return -1;
}
if (shdw_reg->flags.write == 1) {
- PrintDebug("Shadow PTE Write Error\n");
+ PrintDebug(core->vm_info, core, "Shadow PTE Write Error\n");
shadow_pte->writable = guest_pte->writable;
} else {
if (shdw_reg->unhandled(core, fault_addr, guest_pa, shdw_reg, error_code) == -1) {
- PrintError("Special Page fault handler returned error for address: %p\n", (void *)fault_addr);
+ PrintError(core->vm_info, core, "Special Page fault handler returned error for address: %p\n", (void *)fault_addr);
return -1;
}
}
} else {
// Inject page fault into the guest
if (v3_inject_guest_pf(core, fault_addr, error_code) == -1) {
- PrintError("Could not inject guest page fault for vaddr %p\n", (void *)fault_addr);
+ PrintError(core->vm_info, core, "Could not inject guest page fault for vaddr %p\n", (void *)fault_addr);
return -1;
}
- PrintError("PTE Page fault fell through... Not sure if this should ever happen\n");
- PrintError("Manual Says to inject page fault into guest\n");
+ PrintError(core->vm_info, core, "PTE Page fault fell through... Not sure if this should ever happen\n");
+ PrintError(core->vm_info, core, "Manual Says to inject page fault into guest\n");
return -1;
}
addr_t guest_fault_pa = BASE_TO_PAGE_ADDR_4MB(large_guest_pde->page_base_addr) + PAGE_OFFSET_4MB(fault_addr);
- PrintDebug("Handling 4MB 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(core->vm_info, core, "Handling 4MB fault (guest_fault_pa=%p) (error_code=%x)\n", (void *)guest_fault_pa, *(uint_t*)&error_code);
+ PrintDebug(core->vm_info, core, "ShadowPT=%p, LargeGuestPDE=%p\n", shadow_pt, large_guest_pde);
- struct v3_mem_region * shdw_reg = v3_get_mem_region(core->vm_info, core->cpu_id, guest_fault_pa);
+ struct v3_mem_region * shdw_reg = v3_get_mem_region(core->vm_info, core->vcpu_id, guest_fault_pa);
if (shdw_reg == NULL) {
// Inject a machine check in the guest
- PrintDebug("Invalid Guest Address in page table (0x%p)\n", (void *)guest_fault_pa);
+ PrintDebug(core->vm_info, core, "Invalid Guest Address in page table (0x%p)\n", (void *)guest_fault_pa);
v3_raise_exception(core, 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");
+ PrintDebug(core->vm_info, core, "Inconsistent state... Guest re-entry should flush tlb\n");
return 0;
}
if (v3_gpa_to_hpa(core, guest_fault_pa, &shadow_pa) == -1) {
- PrintError("could not translate page fault address (%p)\n", (void *)guest_fault_pa);
+ PrintError(core->vm_info, core, "could not translate page fault address (%p)\n", (void *)guest_fault_pa);
return -1;
}
shadow_pte->page_base_addr = PAGE_BASE_ADDR(shadow_pa);
- PrintDebug("\tMapping shadow page (%p)\n", (void *)BASE_TO_PAGE_ADDR(shadow_pte->page_base_addr));
+ PrintDebug(core->vm_info, core, "\tMapping shadow page (%p)\n", (void *)BASE_TO_PAGE_ADDR(shadow_pte->page_base_addr));
shadow_pte->present = 1;
if (pt_page != NULL) {
// This is a page table page...
+ PrintError(core->vm_info, core, "Found PT page (large), marking RD-ONLY (va=%p), (gpa=%p)\n",
+ (void *)fault_addr, (void *)pg_gpa);
+
shadow_pte->writable = 0;
shadow_pte->vmm_info = V3_CACHED_PG;
}
} else {
if (shdw_reg->unhandled(core, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) {
- PrintError("Special Page Fault handler returned error for address: %p\n", (void *)fault_addr);
+ PrintError(core->vm_info, core, "Special Page Fault handler returned error for address: %p\n", (void *)fault_addr);
return -1;
}
}
// check for cache tag and handle invalidations if it exists.
if (shadow_pte->vmm_info == V3_CACHED_PG) {
addr_t pg_gpa = PAGE_ADDR_4KB(guest_fault_pa);
- PrintError("Evicting on a large page\n");
+ PrintError(core->vm_info, core, "Evicting on a large page\n");
if (evict_shdw_pg(core->vm_info, pg_gpa, PAGE_PD32) == -1) {
- PrintError("Error Evicting PAGE_PD32 cache entry\n");
+ PrintError(core->vm_info, core, "Error Evicting PAGE_PD32 cache entry\n");
return -1;
}
if (evict_shdw_pg(core->vm_info, pg_gpa, PAGE_PT32) == -1) {
- PrintError("Error Evicting PAGE_PT32 cache entry\n");
+ PrintError(core->vm_info, core, "Error Evicting PAGE_PT32 cache entry\n");
return -1;
}
if (shdw_reg->flags.write == 0) {
if (shdw_reg->unhandled(core, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) {
- PrintError("Special Page Fault handler returned error for address: %p\n", (void *)fault_addr);
+ PrintError(core->vm_info, core, "Special Page Fault handler returned error for address: %p\n", (void *)fault_addr);
return -1;
}
} else {
}
} else {
- PrintError("Error in large page fault handler...\n");
- PrintError("This case should have been handled at the top level handler\n");
+ PrintError(core->vm_info, core, "Error in large page fault handler...\n");
+ PrintError(core->vm_info, core, "This case should have been handled at the top level handler\n");
return -1;
}
- PrintDebug("Returning from large page->small page fault handler\n");
+ PrintDebug(core->vm_info, core, "Returning from large page->small page fault handler\n");
return 0;
}
pde32_t * guest_pde;
if (v3_gpa_to_hva(core, guest_cr3, (addr_t*)&guest_pd) == -1) {
- PrintError("Invalid Guest PDE Address: 0x%p\n", (void *)guest_cr3);
+ PrintError(core->vm_info, core, "Invalid Guest PDE Address: 0x%p\n", (void *)guest_cr3);
return -1;
}
guest_pde = (pde32_t *)&(guest_pd[PDE32_INDEX(vaddr)]);
+ // Should we back propagate the invalidations, because they might be cached...??
+
if (guest_pde->large_page == 1) {
shadow_pde->present = 0;
- PrintError("\tInvalidating Large Page (gpa=%p)\n", (void *)BASE_TO_PAGE_ADDR_4MB(guest_pde->pt_base_addr));
+ PrintError(core->vm_info, core, "\tInvalidating Large Page (gpa=%p)\n", (void *)BASE_TO_PAGE_ADDR_4MB(guest_pde->pt_base_addr));
} else if (shadow_pde->present == 1) {
pte32_t * shadow_pt = (pte32_t *)(addr_t)BASE_TO_PAGE_ADDR_4KB(shadow_pde->pt_base_addr);
pte32_t * shadow_pte = (pte32_t *) V3_VAddr( (void*) &shadow_pt[PTE32_INDEX(vaddr)] );
- PrintError("\tInvalidating small page\n");
+ // PrintError(core->vm_info, core, "\tInvalidating small page\n");
shadow_pte->present = 0;
} else {
- PrintError("What the fuck?\n");
+ PrintError(core->vm_info, core, "What the fuck?\n");
}
return 0;
}