X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvm_guest_mem.c;h=63f6037b617564324ff50d737981958f79e3f4ae;hb=7617d3cee4bd93b90558206b1bb1681c07f0396a;hp=70914b4b175659f05527302efca7f356f6b1f203;hpb=41d6dcb0a638ebdc01b89a9edf427c75975b2003;p=palacios.git diff --git a/palacios/src/palacios/vm_guest_mem.c b/palacios/src/palacios/vm_guest_mem.c index 70914b4..63f6037 100644 --- a/palacios/src/palacios/vm_guest_mem.c +++ b/palacios/src/palacios/vm_guest_mem.c @@ -1,3 +1,6 @@ +/* (c) 2008, Jack Lange */ +/* (c) 2008, The V3VEE Project */ + #include #include #include @@ -15,11 +18,11 @@ int host_va_to_host_pa(addr_t host_va, addr_t * host_pa) { *host_pa = (addr_t)(os_hooks)->vaddr_to_paddr((void *)host_va); if (*host_pa == 0) { - PrintDebug("In HVA->HPA: Invalid HVA(%x)->HPA lookup\n", host_va); + PrintError("In HVA->HPA: Invalid HVA(%x)->HPA lookup\n", host_va); return -1; } } else { - PrintDebug("In HVA->HPA: os_hooks not defined\n"); + PrintError("In HVA->HPA: os_hooks not defined\n"); return -1; } return 0; @@ -32,11 +35,11 @@ int host_pa_to_host_va(addr_t host_pa, addr_t * host_va) { *host_va = (addr_t)(os_hooks)->paddr_to_vaddr((void *)host_pa); if (*host_va == 0) { - PrintDebug("In HPA->HVA: Invalid HPA(%x)->HVA lookup\n", host_pa); + PrintError("In HPA->HVA: Invalid HPA(%x)->HVA lookup\n", host_pa); return -1; } } else { - PrintDebug("In HPA->HVA: os_hooks not defined\n"); + PrintError("In HPA->HVA: os_hooks not defined\n"); return -1; } return 0; @@ -47,7 +50,7 @@ int host_pa_to_host_va(addr_t host_pa, addr_t * host_va) { int guest_pa_to_host_pa(struct guest_info * guest_info, addr_t guest_pa, addr_t * host_pa) { // we use the shadow map here... if (lookup_shadow_map_addr(&(guest_info->mem_map), guest_pa, host_pa) != HOST_REGION_PHYSICAL_MEMORY) { - PrintDebug("In GPA->HPA: Could not find address in shadow map (addr=%x)\n", guest_pa); + PrintError("In GPA->HPA: Could not find address in shadow map (addr=%x)\n", guest_pa); return -1; } @@ -61,7 +64,7 @@ int guest_pa_to_host_pa(struct guest_info * guest_info, addr_t guest_pa, addr_t // int host_pa_to_guest_pa(struct guest_info * guest_info, addr_t host_pa, addr_t * guest_pa) { *guest_pa = 0; - PrintDebug("ERROR!!! HPA->GPA currently not implemented!!!\n"); + PrintError("ERROR!!! HPA->GPA currently not implemented!!!\n"); return -1; } @@ -80,12 +83,12 @@ int host_va_to_guest_pa(struct guest_info * guest_info, addr_t host_va, addr_t * *guest_pa = 0; if (host_va_to_host_pa(host_va, &host_pa) != 0) { - PrintDebug("In HVA->GPA: Invalid HVA(%x)->HPA lookup\n", host_va); + PrintError("In HVA->GPA: Invalid HVA(%x)->HPA lookup\n", host_va); return -1; } if (host_pa_to_guest_pa(guest_info, host_pa, guest_pa) != 0) { - PrintDebug("In HVA->GPA: Invalid HPA(%x)->GPA lookup\n", host_pa); + PrintError("In HVA->GPA: Invalid HPA(%x)->GPA lookup\n", host_pa); return -1; } @@ -101,12 +104,12 @@ int guest_pa_to_host_va(struct guest_info * guest_info, addr_t guest_pa, addr_t *host_va = 0; if (guest_pa_to_host_pa(guest_info, guest_pa, &host_pa) != 0) { - PrintDebug("In GPA->HVA: Invalid GPA(%x)->HPA lookup\n", guest_pa); + PrintError("In GPA->HVA: Invalid GPA(%x)->HPA lookup\n", guest_pa); return -1; } if (host_pa_to_host_va(host_pa, host_va) != 0) { - PrintDebug("In GPA->HVA: Invalid HPA(%x)->HVA lookup\n", host_pa); + PrintError("In GPA->HVA: Invalid HPA(%x)->HVA lookup\n", host_pa); return -1; } @@ -115,78 +118,79 @@ int guest_pa_to_host_va(struct guest_info * guest_info, addr_t guest_pa, addr_t int guest_va_to_guest_pa(struct guest_info * guest_info, addr_t guest_va, addr_t * guest_pa) { - if (guest_info->shdw_pg_mode == SHADOW_PAGING) { - if (guest_info->mem_mode == PHYSICAL_MEM) { - // guest virtual address is the same as the physical - *guest_pa = guest_va; - return 0; - } - - // Guest Is in Paged mode - switch (guest_info->cpu_mode) { - case PROTECTED: - { - addr_t tmp_pa = 0; - pde32_t * pde = 0; - addr_t guest_pde = CR3_TO_PDE32(guest_info->shdw_pg_state.guest_cr3); - - if (guest_pa_to_host_va(guest_info, guest_pde, (addr_t *)&pde) == -1) { - PrintDebug("In GVA->GPA: Invalid GPA(%x)->HVA PDE32 lookup\n", guest_pde); - return -1; - } - - - switch (pde32_lookup(pde, guest_va, &tmp_pa)) { - case PDE32_ENTRY_NOT_PRESENT: - *guest_pa = 0; - return -1; - case PDE32_ENTRY_LARGE_PAGE: - *guest_pa = tmp_pa; - return 0; - case PDE32_ENTRY_PTE32: - { - pte32_t * pte = 0; - + if (guest_info->mem_mode == PHYSICAL_MEM) { + // guest virtual address is the same as the physical + *guest_pa = guest_va; + return 0; + } - if (guest_pa_to_host_va(guest_info, tmp_pa, (addr_t*)&pte) == -1) { - PrintDebug("In GVA->GPA: Invalid GPA(%x)->HVA PTE32 lookup\n", guest_pa); - return -1; - } - - PrintDebug("PTE host addr=%x, GVA=%x, GPA=%x(should be 0)\n", pte, guest_va, *guest_pa); - if (pte32_lookup(pte, guest_va, guest_pa) != 0) { - PrintDebug("In GVA->GPA: PTE32 Lookup failure GVA=%x; PTE=%x\n", guest_va, pte); - // PrintPT32(PDE32_INDEX(guest_va) << 22, pte); - return -1; - } - return 0; - } - default: - return -1; - } + // Guest Is in Paged mode + switch (guest_info->cpu_mode) { + case PROTECTED: + { + addr_t tmp_pa = 0; + pde32_t * pde = 0; + addr_t guest_pde = 0; + + if (guest_info->shdw_pg_mode == SHADOW_PAGING) { + guest_pde = CR3_TO_PDE32(guest_info->shdw_pg_state.guest_cr3); + } else if (guest_info->shdw_pg_mode == NESTED_PAGING) { + guest_pde = CR3_TO_PDE32(guest_info->ctrl_regs.cr3); } - case PROTECTED_PAE: - { - // Fill in - } - case LONG: + + if (guest_pa_to_host_va(guest_info, guest_pde, (addr_t *)&pde) == -1) { + PrintError("In GVA->GPA: Invalid GPA(%x)->HVA PDE32 lookup\n", guest_pde); + return -1; + } + + + switch (pde32_lookup(pde, guest_va, &tmp_pa)) { + case PDE32_ENTRY_NOT_PRESENT: + *guest_pa = 0; + return -1; + case PDE32_ENTRY_LARGE_PAGE: + *guest_pa = tmp_pa; + return 0; + case PDE32_ENTRY_PTE32: { - // Fill in + pte32_t * pte = 0; + + + if (guest_pa_to_host_va(guest_info, tmp_pa, (addr_t*)&pte) == -1) { + PrintError("In GVA->GPA: Invalid GPA(%x)->HVA PTE32 lookup\n", guest_pa); + return -1; + } + + //PrintDebug("PTE host addr=%x, GVA=%x, GPA=%x(should be 0)\n", pte, guest_va, *guest_pa); + + if (pte32_lookup(pte, guest_va, guest_pa) != 0) { + PrintError("In GVA->GPA: PTE32 Lookup failure GVA=%x; PTE=%x\n", guest_va, pte); + // PrintPT32(PDE32_INDEX(guest_va) << 22, pte); + return -1; + } + + return 0; } - default: - return -1; + default: + return -1; + } } - } else if (guest_info->shdw_pg_mode == NESTED_PAGING) { - - // Fill in - - } else { + case PROTECTED_PAE: + { + // Fill in + } + case LONG: + { + // Fill in + } + default: return -1; } - - + + + return 0; } @@ -199,7 +203,7 @@ int guest_va_to_guest_pa(struct guest_info * guest_info, addr_t guest_va, addr_t */ int guest_pa_to_guest_va(struct guest_info * guest_info, addr_t guest_pa, addr_t * guest_va) { *guest_va = 0; - PrintDebug("ERROR!!: GPA->GVA Not Implemented!!\n"); + PrintError("ERROR!!: GPA->GVA Not Implemented!!\n"); return -1; } @@ -215,12 +219,12 @@ int guest_va_to_host_pa(struct guest_info * guest_info, addr_t guest_va, addr_t *host_pa = 0; if (guest_va_to_guest_pa(guest_info, guest_va, &guest_pa) != 0) { - PrintDebug("In GVA->HPA: Invalid GVA(%x)->GPA lookup\n", guest_va); + PrintError("In GVA->HPA: Invalid GVA(%x)->GPA lookup\n", guest_va); return -1; } if (guest_pa_to_host_pa(guest_info, guest_pa, host_pa) != 0) { - PrintDebug("In GVA->HPA: Invalid GPA(%x)->HPA lookup\n", guest_pa); + PrintError("In GVA->HPA: Invalid GPA(%x)->HPA lookup\n", guest_pa); return -1; } @@ -234,12 +238,12 @@ int host_pa_to_guest_va(struct guest_info * guest_info, addr_t host_pa, addr_t * *guest_va = 0; if (host_pa_to_guest_pa(guest_info, host_pa, &guest_pa) != 0) { - PrintDebug("In HPA->GVA: Invalid HPA(%x)->GPA lookup\n", host_pa); + PrintError("In HPA->GVA: Invalid HPA(%x)->GPA lookup\n", host_pa); return -1; } if (guest_pa_to_guest_va(guest_info, guest_pa, guest_va) != 0) { - PrintDebug("In HPA->GVA: Invalid GPA(%x)->GVA lookup\n", guest_pa); + PrintError("In HPA->GVA: Invalid GPA(%x)->GVA lookup\n", guest_pa); return -1; } @@ -256,17 +260,17 @@ int guest_va_to_host_va(struct guest_info * guest_info, addr_t guest_va, addr_t *host_va = 0; if (guest_va_to_guest_pa(guest_info, guest_va, &guest_pa) != 0) { - PrintDebug("In GVA->HVA: Invalid GVA(%x)->GPA lookup\n", guest_va); + PrintError("In GVA->HVA: Invalid GVA(%x)->GPA lookup\n", guest_va); return -1; } if (guest_pa_to_host_pa(guest_info, guest_pa, &host_pa) != 0) { - PrintDebug("In GVA->HVA: Invalid GPA(%x)->HPA lookup\n", guest_pa); + PrintError("In GVA->HVA: Invalid GPA(%x)->HPA lookup\n", guest_pa); return -1; } if (host_pa_to_host_va(host_pa, host_va) != 0) { - PrintDebug("In GVA->HVA: Invalid HPA(%x)->HVA lookup\n", host_pa); + PrintError("In GVA->HVA: Invalid HPA(%x)->HVA lookup\n", host_pa); return -1; } @@ -282,17 +286,17 @@ int host_va_to_guest_va(struct guest_info * guest_info, addr_t host_va, addr_t * *guest_va = 0; if (host_va_to_host_pa(host_va, &host_pa) != 0) { - PrintDebug("In HVA->GVA: Invalid HVA(%x)->HPA lookup\n", host_va); + PrintError("In HVA->GVA: Invalid HVA(%x)->HPA lookup\n", host_va); return -1; } if (host_pa_to_guest_pa(guest_info, host_pa, &guest_pa) != 0) { - PrintDebug("In HVA->GVA: Invalid HPA(%x)->GPA lookup\n", host_va); + PrintError("In HVA->GVA: Invalid HPA(%x)->GPA lookup\n", host_va); return -1; } if (guest_pa_to_guest_va(guest_info, guest_pa, guest_va) != 0) { - PrintDebug("In HVA->GVA: Invalid GPA(%x)->GVA lookup\n", guest_pa); + PrintError("In HVA->GVA: Invalid GPA(%x)->GVA lookup\n", guest_pa); return -1; } @@ -318,10 +322,13 @@ int read_guest_va_memory(struct guest_info * guest_info, addr_t guest_va, int co int bytes_to_copy = (dist_to_pg_edge > count) ? count : dist_to_pg_edge; addr_t host_addr = 0; + if (guest_va_to_host_va(guest_info, cursor, &host_addr) != 0) { PrintDebug("Invalid GVA(%x)->HVA lookup\n", cursor); return bytes_read; } + + memcpy(dest + bytes_read, (void*)host_addr, bytes_to_copy); @@ -352,8 +359,7 @@ int read_guest_pa_memory(struct guest_info * guest_info, addr_t guest_pa, int co if (guest_pa_to_host_va(guest_info, cursor, &host_addr) != 0) { return bytes_read; - } - + } /* PrintDebug("Trying to read %d bytes\n", bytes_to_copy);