X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Finclude%2Fpalacios%2Fvmm_paging.h;h=5351b3693ea19237bc038caaa3f5a1f37eb4a75a;hb=82cceefa66b1f05d8f9d5bfcb2fb7214755e1904;hp=edc1d6f5945620df34290e83c69827000ce988c1;hpb=2b1f4ef19d766727f873476861c64339c8836a40;p=palacios.releases.git diff --git a/palacios/include/palacios/vmm_paging.h b/palacios/include/palacios/vmm_paging.h index edc1d6f..5351b36 100644 --- a/palacios/include/palacios/vmm_paging.h +++ b/palacios/include/palacios/vmm_paging.h @@ -1,12 +1,30 @@ -#ifndef __VMM_PAGING_H -#define __VMM_PAGING_H +/* + * 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 +#ifndef __VMM_PAGING_H +#define __VMM_PAGING_H +#ifdef __V3VEE__ -#include +#include #include /* @@ -72,7 +90,7 @@ the host state in the vmcs before entering the guest. */ -#ifdef __V3VEE__ + #define MAX_PTE32_ENTRIES 1024 #define MAX_PDE32_ENTRIES 1024 @@ -90,11 +108,15 @@ the host state in the vmcs before entering the guest. /* Gets the base address needed for a Page Table entry */ #define PD32_BASE_ADDR(x) (((uint_t)x) >> 12) #define PT32_BASE_ADDR(x) (((uint_t)x) >> 12) +#define PD32_4MB_BASE_ADDR(x) (((uint_t)x) >> 22) #define PT32_PAGE_ADDR(x) (((uint_t)x) & 0xfffff000) #define PT32_PAGE_OFFSET(x) (((uint_t)x) & 0xfff) #define PT32_PAGE_POWER 12 +#define PD32_4MB_PAGE_ADDR(x) (((uint_t)x) & 0xffc00000) +#define PD32_4MB_PAGE_OFFSET(x) (((uint_t)x) & 0x003fffff) +#define PAGE_SIZE_4MB (4096 * 1024) /* The following should be phased out */ #define PAGE_OFFSET(x) ((((uint_t)x) & 0xfff)) @@ -106,41 +128,67 @@ the host state in the vmcs before entering the guest. + #define CR3_TO_PDE32(cr3) (((ulong_t)cr3) & 0xfffff000) #define CR3_TO_PDPTRE(cr3) (((ulong_t)cr3) & 0xffffffe0) #define CR3_TO_PML4E64(cr3) (((ullong_t)cr3) & 0x000ffffffffff000LL) + + /* Accessor functions for the page table structures */ -#define PDE32_T_ADDR(x) ((x.pt_base_addr) << 12) -#define PTE32_T_ADDR(x) ((x.page_base_addr) << 12) +#define PDE32_T_ADDR(x) (((x).pt_base_addr) << 12) +#define PTE32_T_ADDR(x) (((x).page_base_addr) << 12) +#define PDE32_4MB_T_ADDR(x) (((x).page_base_addr) << 22) -#define VM_WRITE 1 -#define VM_USER 2 -#define VM_NOCACHE 8 -#define VM_READ 0 -#define VM_EXEC 0 +/* Page Table Flag Values */ +#define PT32_HOOK 0x1 +#define PT32_GUEST_PT 0x2 #endif /* PDE 32 bit PAGE STRUCTURES */ -typedef enum {NOT_PRESENT, PTE32, LARGE_PAGE} pde32_entry_type_t; +typedef enum {PDE32_ENTRY_NOT_PRESENT, PDE32_ENTRY_PTE32, PDE32_ENTRY_LARGE_PAGE} pde32_entry_type_t; +typedef enum {PT_ACCESS_OK, PT_ENTRY_NOT_PRESENT, PT_WRITE_ERROR, PT_USER_ERROR} pt_access_status_t; typedef struct pde32 { uint_t present : 1; - uint_t flags : 4; + uint_t writable : 1; + uint_t user_page : 1; + uint_t write_through : 1; + uint_t cache_disable : 1; uint_t accessed : 1; uint_t reserved : 1; - uint_t large_pages : 1; + uint_t large_page : 1; uint_t global_page : 1; uint_t vmm_info : 3; uint_t pt_base_addr : 20; } pde32_t; +typedef struct pde32_4MB { + uint_t present : 1; + uint_t writable : 1; + uint_t user_page : 1; + uint_t write_through : 1; + uint_t cache_disable : 1; + uint_t accessed : 1; + uint_t dirty : 1; + uint_t one : 1; + uint_t global_page : 1; + uint_t vmm_info : 3; + uint_t pat : 1; + uint_t rsvd : 9; + uint_t page_base_addr : 10; + +} pde32_4MB_t; + typedef struct pte32 { uint_t present : 1; - uint_t flags : 4; + uint_t writable : 1; + uint_t user_page : 1; + uint_t write_through : 1; + uint_t cache_disable : 1; uint_t accessed : 1; uint_t dirty : 1; uint_t pte_attr : 1; @@ -244,9 +292,20 @@ typedef enum { PDE32 } paging_mode_t; void delete_page_tables_pde32(pde32_t * pde); -pde32_entry_type_t pde32_lookup(pde32_t * pde, addr_t addr, addr_t * entry); +pde32_entry_type_t pde32_lookup(pde32_t * pd, addr_t addr, addr_t * entry); int pte32_lookup(pte32_t * pte, addr_t addr, addr_t * entry); +// This assumes that the page table resides in the host address space +// IE. IT DOES NO VM ADDR TRANSLATION +int pt32_lookup(pde32_t * pd, addr_t vaddr, addr_t * paddr); + + + +pt_access_status_t can_access_pde32(pde32_t * pde, addr_t addr, pf_error_t access_type); +pt_access_status_t can_access_pte32(pte32_t * pte, addr_t addr, pf_error_t access_type); + + + struct guest_info;