X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_paging.c;h=3d0cb198af5e9d60722e7071f6ba2ba9615c2d34;hb=b2abe5326ecb16090666eb45a8b7373f80b8eb2c;hp=95240ad1cf814bd6637763b74eba40adb6914a5a;hpb=858a36782662b04562c0d83db75e11cb55e8b91b;p=palacios.git diff --git a/palacios/src/palacios/vmm_paging.c b/palacios/src/palacios/vmm_paging.c index 95240ad..3d0cb19 100644 --- a/palacios/src/palacios/vmm_paging.c +++ b/palacios/src/palacios/vmm_paging.c @@ -1,3 +1,22 @@ +/* + * This file is part of the Palacios Virtual Machine Monitor developed + * by the V3VEE Project with funding from the United States National + * Science Foundation and the Department of Energy. + * + * The V3VEE Project is a joint project between Northwestern University + * and the University of New Mexico. You can find out more at + * http://www.v3vee.org + * + * Copyright (c) 2008, Jack Lange + * Copyright (c) 2008, The V3VEE Project + * All rights reserved. + * + * Author: Jack Lange + * + * This is free software. You are permitted to use, + * redistribute, and modify it as specified in the file "V3VEE_LICENSE". + */ + #include #include @@ -5,10 +24,15 @@ #include -extern struct vmm_os_hooks * os_hooks; -void delete_page_tables_pde32(pde32_t * pde) { - int i;//, j; +#define USE_VMM_PAGING_DEBUG +// All of the debug functions defined in vmm_paging.h are implemented in this file +#include "vmm_paging_debug.h" +#undef USE_VMM_PAGING_DEBUG + + +void delete_page_tables_32(pde32_t * pde) { + int i; if (pde == NULL) { return; @@ -16,107 +40,441 @@ void delete_page_tables_pde32(pde32_t * pde) { for (i = 0; (i < MAX_PDE32_ENTRIES); i++) { if (pde[i].present) { - pte32_t * pte = (pte32_t *)(pde[i].pt_base_addr << PAGE_POWER); + // We double cast, first to an addr_t to handle 64 bit issues, then to the pointer + PrintDebug("PTE base addr %x \n", pde[i].pt_base_addr); + pte32_t * pte = (pte32_t *)((addr_t)(uint_t)(pde[i].pt_base_addr << PAGE_POWER)); - /* - for (j = 0; (j < MAX_PTE32_ENTRIES); j++) { - if ((pte[j].present)) { - os_hooks->free_page((void *)(pte[j].page_base_addr << PAGE_POWER)); - } - } - */ - //PrintDebug("Deleting PTE %d (%x)\n", i, pte); - os_hooks->free_page(pte); + PrintDebug("Deleting PTE %d (%p)\n", i, pte); + V3_FreePage(pte); + } + } + + PrintDebug("Deleting PDE (%p)\n", pde); + V3_FreePage(V3_PAddr(pde)); +} + +void delete_page_tables_32PAE(pdpe32pae_t * pdpe) { + PrintError("Unimplemented function\n"); +} + +void delete_page_tables_64(pml4e64_t * pml4) { + PrintError("Unimplemented function\n"); +} + + +int translate_guest_pt_32(struct guest_info * info, addr_t guest_cr3, addr_t vaddr, addr_t * paddr) { + addr_t guest_pde_pa = CR3_TO_PDE32_PA(guest_cr3); + pde32_t * guest_pde = 0; + addr_t guest_pte_pa = 0; + + if (guest_pa_to_host_va(info, guest_pde_pa, (addr_t*)&guest_pde) == -1) { + PrintError("Could not get virtual address of Guest PDE32 (PA=%p)\n", + (void *)guest_pde_pa); + return -1; + } + + switch (pde32_lookup(guest_pde, vaddr, &guest_pte_pa)) { + case PT_ENTRY_NOT_PRESENT: + *paddr = 0; + return -1; + case PT_ENTRY_LARGE_PAGE: + *paddr = guest_pte_pa; + return 0; + case PT_ENTRY_PAGE: + { + pte32_t * guest_pte = NULL; + + if (guest_pa_to_host_va(info, guest_pte_pa, (addr_t*)&guest_pte) == -1) { + PrintError("Could not get virtual address of Guest PTE32 (PA=%p)\n", + (void *)guest_pte_pa); + return -1; + } + + if (pte32_lookup(guest_pte, vaddr, paddr) == PT_ENTRY_NOT_PRESENT) { + return -1; + } + + return 0; } } - // PrintDebug("Deleting PDE (%x)\n", pde); - os_hooks->free_page(pde); + return 0; } +int translate_guest_pt_32pae(struct guest_info * info, addr_t guest_cr3, addr_t vaddr, addr_t * paddr) { + addr_t guest_pdpe_pa = CR3_TO_PDPE32PAE_PA(guest_cr3); + pdpe32pae_t * guest_pdpe = 0; + addr_t guest_pde_pa = 0; + if (guest_pa_to_host_va(info, guest_pdpe_pa, (addr_t*)&guest_pdpe) == -1) { + PrintError("Could not get virtual address of Guest PDPE32PAE (PA=%p)\n", + (void *)guest_pdpe_pa); + return -1; + } + switch (pdpe32pae_lookup(guest_pdpe, vaddr, &guest_pde_pa)) + { + case PT_ENTRY_NOT_PRESENT: + *paddr = 0; + return -1; + case PT_ENTRY_PAGE: + { + pde32pae_t * guest_pde = NULL; + addr_t guest_pte_pa = 0; + + if (guest_pa_to_host_va(info, guest_pde_pa, (addr_t *)&guest_pde) == -1) { + PrintError("Could not get virtual Address of Guest PDE32PAE (PA=%p)\n", + (void *)guest_pde_pa); + return -1; + } + + switch (pde32pae_lookup(guest_pde, vaddr, &guest_pte_pa)) + { + case PT_ENTRY_NOT_PRESENT: + *paddr = 0; + return -1; + case PT_ENTRY_LARGE_PAGE: + *paddr = guest_pte_pa; + return 0; + case PT_ENTRY_PAGE: + { + pte32pae_t * guest_pte = NULL; + + if (guest_pa_to_host_va(info, guest_pte_pa, (addr_t *)&guest_pte) == -1) { + PrintError("Could not get virtual Address of Guest PTE32PAE (PA=%p)\n", + (void *)guest_pte_pa); + return -1; + } + + if (pte32pae_lookup(guest_pte, vaddr, paddr) == PT_ENTRY_NOT_PRESENT) { + return -1; + } + + return 0; + } + } + } + default: + return -1; + } + + return 0; +} -int pt32_lookup(pde32_t * pd, addr_t vaddr, addr_t * paddr) { - addr_t pde_entry; - pde32_entry_type_t pde_entry_type; +int translate_guest_pt_64(struct guest_info * info, addr_t guest_cr3, addr_t vaddr, addr_t * paddr) { + addr_t guest_pml4_pa = CR3_TO_PML4E64_PA(guest_cr3); + pml4e64_t * guest_pml = 0; + addr_t guest_pdpe_pa = 0; - if (pd == 0) { + if (guest_pa_to_host_va(info, guest_pml4_pa, (addr_t*)&guest_pml) == -1) { + PrintError("Could not get virtual address of Guest PML4E64 (PA=%p)\n", + (void *)guest_pml4_pa); return -1; } + + switch (pml4e64_lookup(guest_pml, vaddr, &guest_pdpe_pa)) { + case PT_ENTRY_NOT_PRESENT: + *paddr = 0; + return -1; + case PT_ENTRY_PAGE: + { + pdpe64_t * guest_pdp = NULL; + addr_t guest_pde_pa = 0; + + if (guest_pa_to_host_va(info, guest_pdpe_pa, (addr_t *)&guest_pdp) == -1) { + PrintError("Could not get virtual address of Guest PDPE64 (PA=%p)\n", + (void *)guest_pdpe_pa); + return -1; + } + + switch (pdpe64_lookup(guest_pdp, vaddr, &guest_pde_pa)) { + case PT_ENTRY_NOT_PRESENT: + *paddr = 0; + return -1; + case PT_ENTRY_LARGE_PAGE: + *paddr = 0; + PrintError("1 Gigabyte Pages not supported\n"); + return -1; + case PT_ENTRY_PAGE: + { + pde64_t * guest_pde = NULL; + addr_t guest_pte_pa = 0; + + if (guest_pa_to_host_va(info, guest_pde_pa, (addr_t *)&guest_pde) == -1) { + PrintError("Could not get virtual address of guest PDE64 (PA=%p)\n", + (void *)guest_pde_pa); + return -1; + } + + switch (pde64_lookup(guest_pde, vaddr, &guest_pte_pa)) { + case PT_ENTRY_NOT_PRESENT: + *paddr = 0; + return -1; + case PT_ENTRY_LARGE_PAGE: + *paddr = guest_pte_pa; + return 0; + case PT_ENTRY_PAGE: + { + pte64_t * guest_pte = NULL; + + if (guest_pa_to_host_va(info, guest_pte_pa, (addr_t *)&guest_pte) == -1) { + PrintError("Could not get virtual address of guest PTE64 (PA=%p)\n", + (void *)guest_pte_pa); + return -1; + } + + if (pte64_lookup(guest_pte, vaddr, paddr) == PT_ENTRY_NOT_PRESENT) { + return -1; + } + + return 0; + } + } + } + } + } + default: + return -1; + } + return 0; +} + - pde_entry_type = pde32_lookup(pd, vaddr, &pde_entry); - if (pde_entry_type == PDE32_ENTRY_PTE32) { - return pte32_lookup((pte32_t *)pde_entry, vaddr, paddr); - } else if (pde_entry_type == PDE32_ENTRY_LARGE_PAGE) { - *paddr = pde_entry; +int translate_host_pt_32(addr_t host_cr3, addr_t vaddr, addr_t * paddr) { + pde32_t * host_pde = (pde32_t *)CR3_TO_PDE32_VA(host_cr3); + pte32_t * host_pte = 0; + + switch (pde32_lookup(host_pde, vaddr, (addr_t *)&host_pte)) { + case PT_ENTRY_NOT_PRESENT: + *paddr = 0; + return -1; + case PT_ENTRY_LARGE_PAGE: + *paddr = (addr_t)host_pte; return 0; + case PT_ENTRY_PAGE: + if (pte32_lookup(host_pte, vaddr, paddr) == PT_ENTRY_NOT_PRESENT) { + return -1; + } } + return 0; +} + + +int translate_host_pt_32pae(addr_t host_cr3, addr_t vaddr, addr_t * paddr) { + + return -1; } +int translate_host_pt_64(addr_t host_cr3, addr_t vaddr, addr_t * paddr) { + + + return -1; +} + + + + -/* We can't do a full lookup because we don't know what context the page tables are in... - * The entry addresses could be pointing to either guest physical memory or host physical memory - * Instead we just return the entry address, and a flag to show if it points to a pte or a large page... +/* + * PAGE TABLE LOOKUP FUNCTIONS + * + * + * The value of entry is a return type: + * Page not present: *entry = 0 + * Large Page: *entry = translated physical address (byte granularity) + * PTE entry: *entry is the address of the PTE Page */ -pde32_entry_type_t pde32_lookup(pde32_t * pd, addr_t addr, addr_t * entry) { + +/** + * + * 32 bit Page Table lookup functions + * + **/ + +pt_entry_type_t pde32_lookup(pde32_t * pd, addr_t addr, addr_t * entry) { pde32_t * pde_entry = &(pd[PDE32_INDEX(addr)]); if (!pde_entry->present) { *entry = 0; - return PDE32_ENTRY_NOT_PRESENT; - } else { + return PT_ENTRY_NOT_PRESENT; + } else if (pde_entry->large_page) { + pde32_4MB_t * large_pde = (pde32_4MB_t *)pde_entry; - if (pde_entry->large_page) { - pde32_4MB_t * large_pde = (pde32_4MB_t *)pde_entry; + *entry = BASE_TO_PAGE_ADDR_4MB(large_pde->page_base_addr); + *entry += PAGE_OFFSET_4MB(addr); - *entry = PDE32_4MB_T_ADDR(*large_pde); - *entry += PD32_4MB_PAGE_OFFSET(addr); - return PDE32_ENTRY_LARGE_PAGE; - } else { - *entry = PDE32_T_ADDR(*pde_entry); - return PDE32_ENTRY_PTE32; - } - } - return PDE32_ENTRY_NOT_PRESENT; + return PT_ENTRY_LARGE_PAGE; + } else { + *entry = BASE_TO_PAGE_ADDR(pde_entry->pt_base_addr); + return PT_ENTRY_PAGE; + } } /* Takes a virtual addr (addr) and returns the physical addr (entry) as defined in the page table */ -int pte32_lookup(pte32_t * pt, addr_t addr, addr_t * entry) { +pt_entry_type_t pte32_lookup(pte32_t * pt, addr_t addr, addr_t * entry) { pte32_t * pte_entry = &(pt[PTE32_INDEX(addr)]); if (!pte_entry->present) { *entry = 0; - PrintDebug("Lookup at non present page (index=%d)\n", PTE32_INDEX(addr)); + // PrintDebug("Lookup at non present page (index=%d)\n", PTE32_INDEX(addr)); + return PT_ENTRY_NOT_PRESENT; + } else { + *entry = BASE_TO_PAGE_ADDR(pte_entry->page_base_addr) + PAGE_OFFSET(addr); + return PT_ENTRY_PAGE; + } + +} + + + +/** + * + * 32 bit PAE Page Table lookup functions + * + **/ +pt_entry_type_t pdpe32pae_lookup(pdpe32pae_t * pdp, addr_t addr, addr_t * entry) { + pdpe32pae_t * pdpe_entry = &(pdp[PDPE32PAE_INDEX(addr)]); + + if (!pdpe_entry->present) { + *entry = 0; + return PT_ENTRY_NOT_PRESENT; + } else { + *entry = BASE_TO_PAGE_ADDR(pdpe_entry->pd_base_addr); + return PT_ENTRY_PAGE; + } +} + +pt_entry_type_t pde32pae_lookup(pde32pae_t * pd, addr_t addr, addr_t * entry) { + pde32pae_t * pde_entry = &(pd[PDE32PAE_INDEX(addr)]); + + if (!pde_entry->present) { + *entry = 0; + return PT_ENTRY_NOT_PRESENT; + } else if (pde_entry->large_page) { + pde32pae_2MB_t * large_pde = (pde32pae_2MB_t *)pde_entry; + + *entry = BASE_TO_PAGE_ADDR_2MB(large_pde->page_base_addr); + *entry += PAGE_OFFSET_2MB(addr); + + return PT_ENTRY_LARGE_PAGE; + } else { + *entry = BASE_TO_PAGE_ADDR(pde_entry->pt_base_addr); + return PT_ENTRY_PAGE; + } +} + +pt_entry_type_t pte32pae_lookup(pte32pae_t * pt, addr_t addr, addr_t * entry) { + pte32pae_t * pte_entry = &(pt[PTE32PAE_INDEX(addr)]); + + if (!pte_entry->present) { + *entry = 0; + return PT_ENTRY_NOT_PRESENT; + } else { + *entry = BASE_TO_PAGE_ADDR(pte_entry->page_base_addr) + PAGE_OFFSET(addr); + return PT_ENTRY_PAGE; + } +} + + + +/** + * + * 64 bit Page Table lookup functions + * + **/ +pt_entry_type_t pml4e64_lookup(pml4e64_t * pml, addr_t addr, addr_t * entry) { + pml4e64_t * pml_entry = &(pml[PML4E64_INDEX(addr)]); + + if (!pml_entry->present) { + *entry = 0; + return PT_ENTRY_NOT_PRESENT; + } else { + *entry = BASE_TO_PAGE_ADDR(pml_entry->pdp_base_addr); + return PT_ENTRY_PAGE; + } +} + +pt_entry_type_t pdpe64_lookup(pdpe64_t * pdp, addr_t addr, addr_t * entry) { + pdpe64_t * pdpe_entry = &(pdp[PDPE64_INDEX(addr)]); + + if (!pdpe_entry->present) { + *entry = 0; + return PT_ENTRY_NOT_PRESENT; + } else if (pdpe_entry->large_page) { + PrintError("1 Gigabyte pages not supported\n"); + V3_ASSERT(0); return -1; } else { - *entry = PTE32_T_ADDR(*pte_entry) + PT32_PAGE_OFFSET(addr); - return 0; + *entry = BASE_TO_PAGE_ADDR(pdpe_entry->pd_base_addr); + return PT_ENTRY_PAGE; } +} - return -1; +pt_entry_type_t pde64_lookup(pde64_t * pd, addr_t addr, addr_t * entry) { + pde64_t * pde_entry = &(pd[PDE64_INDEX(addr)]); + + if (!pde_entry->present) { + *entry = 0; + return PT_ENTRY_NOT_PRESENT; + } else if (pde_entry->large_page) { + pde64_2MB_t * large_pde = (pde64_2MB_t *)pde_entry; + + *entry = BASE_TO_PAGE_ADDR_2MB(large_pde->page_base_addr); + *entry += PAGE_OFFSET_2MB(addr); + + return PT_ENTRY_LARGE_PAGE; + } else { + *entry = BASE_TO_PAGE_ADDR(pde_entry->pt_base_addr); + return PT_ENTRY_PAGE; + } +} + +pt_entry_type_t pte64_lookup(pte64_t * pt, addr_t addr, addr_t * entry) { + pte64_t * pte_entry = &(pt[PTE64_INDEX(addr)]); + + if (!pte_entry->present) { + *entry = 0; + return PT_ENTRY_NOT_PRESENT; + } else { + *entry = BASE_TO_PAGE_ADDR(pte_entry->page_base_addr) + PAGE_OFFSET(addr); + return PT_ENTRY_PAGE; + } } + + + + + + + + + + + + + + pt_access_status_t can_access_pde32(pde32_t * pde, addr_t addr, pf_error_t access_type) { pde32_t * entry = &pde[PDE32_INDEX(addr)]; if (entry->present == 0) { - return PT_ENTRY_NOT_PRESENT; + return PT_ACCESS_NOT_PRESENT; } else if ((entry->writable == 0) && (access_type.write == 1)) { - return PT_WRITE_ERROR; + return PT_ACCESS_WRITE_ERROR; } else if ((entry->user_page == 0) && (access_type.user == 1)) { - // Check CR0.WP - return PT_USER_ERROR; + // Check CR0.WP? + return PT_ACCESS_USER_ERROR; } return PT_ACCESS_OK; @@ -127,12 +485,12 @@ pt_access_status_t can_access_pte32(pte32_t * pte, addr_t addr, pf_error_t acces pte32_t * entry = &pte[PTE32_INDEX(addr)]; if (entry->present == 0) { - return PT_ENTRY_NOT_PRESENT; + return PT_ACCESS_NOT_PRESENT; } else if ((entry->writable == 0) && (access_type.write == 1)) { - return PT_WRITE_ERROR; + return PT_ACCESS_WRITE_ERROR; } else if ((entry->user_page == 0) && (access_type.user == 1)) { - // Check CR0.WP - return PT_USER_ERROR; + // Check CR0.WP? + return PT_ACCESS_USER_ERROR; } return PT_ACCESS_OK; @@ -145,16 +503,16 @@ pt_access_status_t can_access_pte32(pte32_t * pte, addr_t addr, pf_error_t acces * pulling pages from the mem_list when necessary * If there are any gaps in the layout, we add them as unmapped pages */ -pde32_t * create_passthrough_pde32_pts(struct guest_info * guest_info) { - ullong_t current_page_addr = 0; +pde32_t * create_passthrough_pts_32(struct guest_info * guest_info) { + addr_t current_page_addr = 0; int i, j; struct shadow_map * map = &(guest_info->mem_map); - pde32_t * pde = os_hooks->allocate_pages(1); + pde32_t * pde = V3_VAddr(V3_AllocPages(1)); for (i = 0; i < MAX_PDE32_ENTRIES; i++) { int pte_present = 0; - pte32_t * pte = os_hooks->allocate_pages(1); + pte32_t * pte = V3_VAddr(V3_AllocPages(1)); for (j = 0; j < MAX_PTE32_ENTRIES; j++) { @@ -205,7 +563,7 @@ pde32_t * create_passthrough_pde32_pts(struct guest_info * guest_info) { } if (pte_present == 0) { - os_hooks->free_page(pte); + V3_FreePage(V3_PAddr(pte)); pde[i].present = 0; pde[i].writable = 0; @@ -229,7 +587,7 @@ pde32_t * create_passthrough_pde32_pts(struct guest_info * guest_info) { pde[i].large_page = 0; pde[i].global_page = 0; pde[i].vmm_info = 0; - pde[i].pt_base_addr = PAGE_ALIGNED_ADDR(pte); + pde[i].pt_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pte)); } } @@ -238,85 +596,321 @@ pde32_t * create_passthrough_pde32_pts(struct guest_info * guest_info) { } +/* We generate a page table to correspond to a given memory layout + * pulling pages from the mem_list when necessary + * If there are any gaps in the layout, we add them as unmapped pages + */ +pdpe32pae_t * create_passthrough_pts_32PAE(struct guest_info * guest_info) { + addr_t current_page_addr = 0; + int i, j, k; + struct shadow_map * map = &(guest_info->mem_map); + pdpe32pae_t * pdpe = V3_VAddr(V3_AllocPages(1)); + memset(pdpe, 0, PAGE_SIZE); + for (i = 0; i < MAX_PDPE32PAE_ENTRIES; i++) { + int pde_present = 0; + pde32pae_t * pde = V3_VAddr(V3_AllocPages(1)); - -void PrintPDE32(addr_t virtual_address, pde32_t * pde) -{ - PrintDebug("PDE %p -> %p : present=%x, writable=%x, user=%x, wt=%x, cd=%x, accessed=%x, reserved=%x, largePages=%x, globalPage=%x, kernelInfo=%x\n", - virtual_address, - (void *) (pde->pt_base_addr << PAGE_POWER), - pde->present, - pde->writable, - pde->user_page, - pde->write_through, - pde->cache_disable, - pde->accessed, - pde->reserved, - pde->large_page, - pde->global_page, - pde->vmm_info); -} - -void PrintPTE32(addr_t virtual_address, pte32_t * pte) -{ - PrintDebug("PTE %p -> %p : present=%x, writable=%x, user=%x, wt=%x, cd=%x, accessed=%x, dirty=%x, pteAttribute=%x, globalPage=%x, vmm_info=%x\n", - virtual_address, - (void*)(pte->page_base_addr << PAGE_POWER), - pte->present, - pte->writable, - pte->user_page, - pte->write_through, - pte->cache_disable, - pte->accessed, - pte->dirty, - pte->pte_attr, - pte->global_page, - pte->vmm_info); -} - + for (j = 0; j < MAX_PDE32PAE_ENTRIES; j++) { -void PrintPD32(pde32_t * pde) -{ - int i; - - PrintDebug("Page Directory at %p:\n", pde); - for (i = 0; (i < MAX_PDE32_ENTRIES); i++) { - if ( pde[i].present) { - PrintPDE32((addr_t)(PAGE_SIZE * MAX_PTE32_ENTRIES * i), &(pde[i])); + int pte_present = 0; + pte32pae_t * pte = V3_VAddr(V3_AllocPages(1)); + + + for (k = 0; k < MAX_PTE32PAE_ENTRIES; k++) { + struct shadow_region * region = get_shadow_region_by_addr(map, current_page_addr); + + if (!region || + (region->host_type == HOST_REGION_HOOK) || + (region->host_type == HOST_REGION_UNALLOCATED) || + (region->host_type == HOST_REGION_MEMORY_MAPPED_DEVICE) || + (region->host_type == HOST_REGION_REMOTE) || + (region->host_type == HOST_REGION_SWAPPED)) { + pte[k].present = 0; + pte[k].writable = 0; + pte[k].user_page = 0; + pte[k].write_through = 0; + pte[k].cache_disable = 0; + pte[k].accessed = 0; + pte[k].dirty = 0; + pte[k].pte_attr = 0; + pte[k].global_page = 0; + pte[k].vmm_info = 0; + pte[k].page_base_addr = 0; + pte[k].rsvd = 0; + } else { + addr_t host_addr; + pte[k].present = 1; + pte[k].writable = 1; + pte[k].user_page = 1; + pte[k].write_through = 0; + pte[k].cache_disable = 0; + pte[k].accessed = 0; + pte[k].dirty = 0; + pte[k].pte_attr = 0; + pte[k].global_page = 0; + pte[k].vmm_info = 0; + + if (guest_pa_to_host_pa(guest_info, current_page_addr, &host_addr) == -1) { + // BIG ERROR + // PANIC + return NULL; + } + + pte[k].page_base_addr = host_addr >> 12; + pte[k].rsvd = 0; + + pte_present = 1; + } + + current_page_addr += PAGE_SIZE; + } + + if (pte_present == 0) { + V3_FreePage(V3_PAddr(pte)); + + pde[j].present = 0; + pde[j].writable = 0; + pde[j].user_page = 0; + pde[j].write_through = 0; + pde[j].cache_disable = 0; + pde[j].accessed = 0; + pde[j].avail = 0; + pde[j].large_page = 0; + pde[j].global_page = 0; + pde[j].vmm_info = 0; + pde[j].pt_base_addr = 0; + pde[j].rsvd = 0; + } else { + pde[j].present = 1; + pde[j].writable = 1; + pde[j].user_page = 1; + pde[j].write_through = 0; + pde[j].cache_disable = 0; + pde[j].accessed = 0; + pde[j].avail = 0; + pde[j].large_page = 0; + pde[j].global_page = 0; + pde[j].vmm_info = 0; + pde[j].pt_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pte)); + pde[j].rsvd = 0; + + pde_present = 1; + } + + } + + if (pde_present == 0) { + V3_FreePage(V3_PAddr(pde)); + + pdpe[i].present = 0; + pdpe[i].rsvd = 0; + pdpe[i].write_through = 0; + pdpe[i].cache_disable = 0; + pdpe[i].accessed = 0; + pdpe[i].avail = 0; + pdpe[i].rsvd2 = 0; + pdpe[i].vmm_info = 0; + pdpe[i].pd_base_addr = 0; + pdpe[i].rsvd3 = 0; + } else { + pdpe[i].present = 1; + pdpe[i].rsvd = 0; + pdpe[i].write_through = 0; + pdpe[i].cache_disable = 0; + pdpe[i].accessed = 0; + pdpe[i].avail = 0; + pdpe[i].rsvd2 = 0; + pdpe[i].vmm_info = 0; + pdpe[i].pd_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pde)); + pdpe[i].rsvd3 = 0; } + } -} -void PrintPT32(addr_t starting_address, pte32_t * pte) -{ - int i; - PrintDebug("Page Table at %p:\n", pte); - for (i = 0; (i < MAX_PTE32_ENTRIES) ; i++) { - if (pte[i].present) { - PrintPTE32(starting_address + (PAGE_SIZE * i), &(pte[i])); - } - } + return pdpe; } -void PrintDebugPageTables(pde32_t * pde) -{ - int i; + +pml4e64_t * create_passthrough_pts_64(struct guest_info * info) { + addr_t current_page_addr = 0; + int i, j, k, m; + struct shadow_map * map = &(info->mem_map); - PrintDebug("Dumping the pages starting with the pde page at %p\n", pde); + pml4e64_t * pml = V3_VAddr(V3_AllocPages(1)); + + for (i = 0; i < 1; i++) { + int pdpe_present = 0; + pdpe64_t * pdpe = V3_VAddr(V3_AllocPages(1)); + + for (j = 0; j < 20; j++) { + int pde_present = 0; + pde64_t * pde = V3_VAddr(V3_AllocPages(1)); + + for (k = 0; k < MAX_PDE64_ENTRIES; k++) { + int pte_present = 0; + pte64_t * pte = V3_VAddr(V3_AllocPages(1)); + + + for (m = 0; m < MAX_PTE64_ENTRIES; m++) { + struct shadow_region * region = get_shadow_region_by_addr(map, current_page_addr); + + + + if (!region || + (region->host_type == HOST_REGION_HOOK) || + (region->host_type == HOST_REGION_UNALLOCATED) || + (region->host_type == HOST_REGION_MEMORY_MAPPED_DEVICE) || + (region->host_type == HOST_REGION_REMOTE) || + (region->host_type == HOST_REGION_SWAPPED)) { + pte[m].present = 0; + pte[m].writable = 0; + pte[m].user_page = 0; + pte[m].write_through = 0; + pte[m].cache_disable = 0; + pte[m].accessed = 0; + pte[m].dirty = 0; + pte[m].pte_attr = 0; + pte[m].global_page = 0; + pte[m].vmm_info = 0; + pte[m].page_base_addr = 0; + } else { + addr_t host_addr; + pte[m].present = 1; + pte[m].writable = 1; + pte[m].user_page = 1; + pte[m].write_through = 0; + pte[m].cache_disable = 0; + pte[m].accessed = 0; + pte[m].dirty = 0; + pte[m].pte_attr = 0; + pte[m].global_page = 0; + pte[m].vmm_info = 0; + + if (guest_pa_to_host_pa(info, current_page_addr, &host_addr) == -1) { + // BIG ERROR + // PANIC + return NULL; + } + + pte[m].page_base_addr = PAGE_BASE_ADDR(host_addr); + + //PrintPTE64(current_page_addr, &(pte[m])); + + pte_present = 1; + } + + + + + current_page_addr += PAGE_SIZE; + } + + if (pte_present == 0) { + V3_FreePage(V3_PAddr(pte)); + + pde[k].present = 0; + pde[k].writable = 0; + pde[k].user_page = 0; + pde[k].write_through = 0; + pde[k].cache_disable = 0; + pde[k].accessed = 0; + pde[k].avail = 0; + pde[k].large_page = 0; + //pde[k].global_page = 0; + pde[k].vmm_info = 0; + pde[k].pt_base_addr = 0; + } else { + pde[k].present = 1; + pde[k].writable = 1; + pde[k].user_page = 1; + pde[k].write_through = 0; + pde[k].cache_disable = 0; + pde[k].accessed = 0; + pde[k].avail = 0; + pde[k].large_page = 0; + //pde[k].global_page = 0; + pde[k].vmm_info = 0; + pde[k].pt_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pte)); + + pde_present = 1; + } + } - for (i = 0; (i < MAX_PDE32_ENTRIES); i++) { - if (pde[i].present) { - PrintPDE32((addr_t)(PAGE_SIZE * MAX_PTE32_ENTRIES * i), &(pde[i])); - PrintPT32((addr_t)(PAGE_SIZE * MAX_PTE32_ENTRIES * i), (pte32_t *)(pde[i].pt_base_addr << PAGE_POWER)); + if (pde_present == 0) { + V3_FreePage(V3_PAddr(pde)); + + pdpe[j].present = 0; + pdpe[j].writable = 0; + pdpe[j].user_page = 0; + pdpe[j].write_through = 0; + pdpe[j].cache_disable = 0; + pdpe[j].accessed = 0; + pdpe[j].avail = 0; + pdpe[j].large_page = 0; + //pdpe[j].global_page = 0; + pdpe[j].vmm_info = 0; + pdpe[j].pd_base_addr = 0; + } else { + pdpe[j].present = 1; + pdpe[j].writable = 1; + pdpe[j].user_page = 1; + pdpe[j].write_through = 0; + pdpe[j].cache_disable = 0; + pdpe[j].accessed = 0; + pdpe[j].avail = 0; + pdpe[j].large_page = 0; + //pdpe[j].global_page = 0; + pdpe[j].vmm_info = 0; + pdpe[j].pd_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pde)); + + + pdpe_present = 1; + } + + } + + PrintDebug("PML index=%d\n", i); + + if (pdpe_present == 0) { + V3_FreePage(V3_PAddr(pdpe)); + + pml[i].present = 0; + pml[i].writable = 0; + pml[i].user_page = 0; + pml[i].write_through = 0; + pml[i].cache_disable = 0; + pml[i].accessed = 0; + pml[i].reserved = 0; + //pml[i].large_page = 0; + //pml[i].global_page = 0; + pml[i].vmm_info = 0; + pml[i].pdp_base_addr = 0; + } else { + pml[i].present = 1; + pml[i].writable = 1; + pml[i].user_page = 1; + pml[i].write_through = 0; + pml[i].cache_disable = 0; + pml[i].accessed = 0; + pml[i].reserved = 0; + //pml[i].large_page = 0; + //pml[i].global_page = 0; + pml[i].vmm_info = 0; + pml[i].pdp_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pdpe)); } } + + return pml; } - + + + +