X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fgeekos%2Fvm_guest_mem.c;fp=palacios%2Fsrc%2Fgeekos%2Fvm_guest_mem.c;h=0000000000000000000000000000000000000000;hb=ed42f510da670d47e780813b35a78bea90a8ccde;hp=364dde4fc89b78a56aefa67cb82ed2d8b9153f56;hpb=c7e3f043b6458083162e23e1a8adb7703fd06559;p=palacios.git diff --git a/palacios/src/geekos/vm_guest_mem.c b/palacios/src/geekos/vm_guest_mem.c deleted file mode 100644 index 364dde4..0000000 --- a/palacios/src/geekos/vm_guest_mem.c +++ /dev/null @@ -1,363 +0,0 @@ -#include -#include -#include - -extern struct vmm_os_hooks * os_hooks; - - -/**********************************/ -/* GROUP 0 */ -/**********************************/ - -int host_va_to_host_pa(addr_t host_va, addr_t * host_pa) { - if ((os_hooks) && (os_hooks)->vaddr_to_paddr) { - - *host_pa = (addr_t)(os_hooks)->vaddr_to_paddr((void *)host_va); - - if (*host_pa == 0) { - return -1; - } - } else { - return -1; - } - return 0; -} - - -int host_pa_to_host_va(addr_t host_pa, addr_t * host_va) { - if ((os_hooks) && (os_hooks)->paddr_to_vaddr) { - - *host_va = (addr_t)(os_hooks)->paddr_to_vaddr((void *)host_pa); - - if (*host_va == 0) { - return -1; - } - } else { - return -1; - } - return 0; -} - - - -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) { - return -1; - } - - return 0; -} - - -/* !! Currently not implemented !! */ -// This is a scan of the shadow map -// For now we ignore it -// -int host_pa_to_guest_pa(struct guest_info * guest_info, addr_t host_pa, addr_t * guest_pa) { - *guest_pa = 0; - - return -1; -} - - - -/**********************************/ -/* GROUP 1 */ -/**********************************/ - - -/* !! Currently not implemented !! */ -// This will return negative until we implement host_pa_to_guest_pa() -int host_va_to_guest_pa(struct guest_info * guest_info, addr_t host_va, addr_t * guest_pa) { - addr_t host_pa; - *guest_pa = 0; - - if (host_va_to_host_pa(host_va, &host_pa) != 0) { - return -1; - } - - if (host_pa_to_guest_pa(guest_info, host_pa, guest_pa) != 0) { - return -1; - } - - return 0; -} - - - - -int guest_pa_to_host_va(struct guest_info * guest_info, addr_t guest_pa, addr_t * host_va) { - addr_t host_pa; - - *host_va = 0; - - if (guest_pa_to_host_pa(guest_info, guest_pa, &host_pa) != 0) { - return -1; - } - - if (host_pa_to_host_va(host_pa, host_va) != 0) { - return -1; - } - - return 0; -} - - -int guest_va_to_guest_pa(struct guest_info * guest_info, addr_t guest_va, addr_t * guest_pa) { - if (guest_info->page_mode == SHADOW_PAGING) { - switch (guest_info->cpu_mode) { - case REAL: - case PROTECTED: - case LONG: - case PROTECTED_PAE: - // guest virtual address is the same as the physical - *guest_pa = guest_va; - return 0; - case PROTECTED_PG: - { - addr_t tmp_pa; - pde32_t * pde; - addr_t guest_pde = CR3_TO_PDE32(guest_info->shdw_pg_state.guest_cr3.r_reg); - - if (guest_pa_to_host_va(guest_info, guest_pde, (addr_t *)&pde) == -1) { - return -1; - } - - switch (pde32_lookup(pde, guest_va, &tmp_pa)) { - case NOT_PRESENT: - *guest_pa = 0; - return -1; - case LARGE_PAGE: - *guest_pa = tmp_pa; - return 0; - case PTE32: - { - pte32_t * pte; - - if (guest_pa_to_host_va(guest_info, tmp_pa, (addr_t*)&pte) == -1) { - return -1; - } - - if (pte32_lookup(pte, guest_va, guest_pa) != 0) { - return -1; - } - - return 0; - } - default: - return -1; - } - } - case PROTECTED_PAE_PG: - { - // Fill in - } - case LONG_PG: - { - // Fill in - } - default: - return -1; - } - } else if (guest_info->page_mode == NESTED_PAGING) { - - // Fill in - - } else { - return -1; - } - - - return 0; -} - - - -/* !! Currently not implemented !! */ -/* This will be a real pain.... its your standard page table walker in guest memory - * - * For now we ignore it... - */ -int guest_pa_to_guest_va(struct guest_info * guest_info, addr_t guest_pa, addr_t * guest_va) { - *guest_va = 0; - return -1; -} - - -/**********************************/ -/* GROUP 2 */ -/**********************************/ - - -int guest_va_to_host_pa(struct guest_info * guest_info, addr_t guest_va, addr_t * host_pa) { - addr_t guest_pa; - - *host_pa = 0; - - if (guest_va_to_guest_pa(guest_info, guest_va, &guest_pa) != 0) { - return -1; - } - - if (guest_pa_to_host_pa(guest_info, guest_pa, host_pa) != 0) { - return -1; - } - - return 0; -} - -/* !! Currently not implemented !! */ -int host_pa_to_guest_va(struct guest_info * guest_info, addr_t host_pa, addr_t * guest_va) { - addr_t guest_pa; - - *guest_va = 0; - - if (host_pa_to_guest_pa(guest_info, host_pa, &guest_pa) != 0) { - return -1; - } - - if (guest_pa_to_guest_va(guest_info, guest_pa, guest_va) != 0) { - return -1; - } - - return 0; -} - - - - -int guest_va_to_host_va(struct guest_info * guest_info, addr_t guest_va, addr_t * host_va) { - addr_t guest_pa; - addr_t host_pa; - - *host_va = 0; - - if (guest_va_to_guest_pa(guest_info, guest_va, &guest_pa) != 0) { - return -1; - } - - if (guest_pa_to_host_pa(guest_info, guest_pa, &host_pa) != 0) { - return -1; - } - - if (host_pa_to_host_va(host_pa, host_va) != 0) { - return -1; - } - - return 0; -} - - -/* !! Currently not implemented !! */ -int host_va_to_guest_va(struct guest_info * guest_info, addr_t host_va, addr_t * guest_va) { - addr_t host_pa; - addr_t guest_pa; - - *guest_va = 0; - - if (host_va_to_host_pa(host_va, &host_pa) != 0) { - return -1; - } - - if (host_pa_to_guest_pa(guest_info, host_pa, &guest_pa) != 0) { - return -1; - } - - if (guest_pa_to_guest_va(guest_info, guest_pa, guest_va) != 0) { - return -1; - } - - return 0; -} - - - - - - -/* This is a straight address conversion + copy, - * except for the tiny little issue of crossing page boundries..... - */ -int read_guest_va_memory(struct guest_info * guest_info, addr_t guest_va, int count, char * dest) { - addr_t cursor = guest_va; - int bytes_read = 0; - - while (count > 0) { - int dist_to_pg_edge = (PAGE_OFFSET(cursor) + PAGE_SIZE) - cursor; - int bytes_to_copy = (dist_to_pg_edge > count) ? count : dist_to_pg_edge; - addr_t host_addr; - - if (guest_va_to_host_va(guest_info, cursor, &host_addr) != 0) { - return bytes_read; - } - - memcpy(dest + bytes_read, (void*)host_addr, bytes_to_copy); - - bytes_read += bytes_to_copy; - count -= bytes_to_copy; - cursor += bytes_to_copy; - } - - return bytes_read; -} - - - - - - -/* This is a straight address conversion + copy, - * except for the tiny little issue of crossing page boundries..... - */ -int read_guest_pa_memory(struct guest_info * guest_info, addr_t guest_pa, int count, char * dest) { - addr_t cursor = guest_pa; - int bytes_read = 0; - - while (count > 0) { - int dist_to_pg_edge = (PAGE_OFFSET(cursor) + PAGE_SIZE) - cursor; - int bytes_to_copy = (dist_to_pg_edge > count) ? count : dist_to_pg_edge; - addr_t host_addr; - - if (guest_pa_to_host_va(guest_info, cursor, &host_addr) != 0) { - return bytes_read; - } - - memcpy(dest + bytes_read, (void*)host_addr, bytes_to_copy); - - bytes_read += bytes_to_copy; - count -= bytes_to_copy; - cursor += bytes_to_copy; - } - - return bytes_read; -} - - - - -/* This is a straight address conversion + copy, - * except for the tiny little issue of crossing page boundries..... - */ -int write_guest_pa_memory(struct guest_info * guest_info, addr_t guest_pa, int count, char * src) { - addr_t cursor = guest_pa; - int bytes_written = 0; - - while (count > 0) { - int dist_to_pg_edge = (PAGE_OFFSET(cursor) + PAGE_SIZE) - cursor; - int bytes_to_copy = (dist_to_pg_edge > count) ? count : dist_to_pg_edge; - addr_t host_addr; - - if (guest_pa_to_host_va(guest_info, cursor, &host_addr) != 0) { - return bytes_written; - } - - memcpy((void*)host_addr, src + bytes_written, bytes_to_copy); - - bytes_written += bytes_to_copy; - count -= bytes_to_copy; - cursor += bytes_to_copy; - } - - return bytes_written; -} -