#include <palacios/vmm.h>
#include <palacios/vmm_paging.h>
+#ifndef V3_CONFIG_DEBUG_MEM_ERRORS
+#undef PrintDebug
+#define PrintDebug(fmt, args...)
+#endif
+
extern struct v3_os_hooks * os_hooks;
*hpa = (addr_t)(os_hooks)->vaddr_to_paddr((void *)hva);
if (*hpa == 0) {
- PrintError("In HVA->HPA: Invalid HVA(%p)->HPA lookup\n",
+ PrintDebug("In HVA->HPA: Invalid HVA(%p)->HPA lookup\n",
(void *)hva);
return -1;
}
} else {
- PrintError("In HVA->HPA: os_hooks not defined\n");
+ PrintDebug("In HVA->HPA: os_hooks not defined\n");
return -1;
}
return 0;
*hva = (addr_t)(os_hooks)->paddr_to_vaddr((void *)hpa);
if (*hva == 0) {
- PrintError("In HPA->HVA: Invalid HPA(%p)->HVA lookup\n",
+ PrintDebug("In HPA->HVA: Invalid HPA(%p)->HVA lookup\n",
(void *)hpa);
return -1;
}
} else {
- PrintError("In HPA->HVA: os_hooks not defined\n");
+ PrintDebug("In HPA->HVA: os_hooks not defined\n");
return -1;
}
return 0;
}
int v3_gpa_to_hpa(struct guest_info * info, addr_t gpa, addr_t * hpa) {
- struct v3_mem_region * reg = v3_get_mem_region(info->vm_info, info->cpu_id, gpa);
+ struct v3_mem_region * reg = v3_get_mem_region(info->vm_info, info->vcpu_id, gpa);
if (reg == NULL) {
- PrintError("In GPA->HPA: Could not find address in shadow map (addr=%p) (NULL REGION)\n",
+ PrintDebug("In GPA->HPA: Could not find address in shadow map (addr=%p) (NULL REGION)\n",
(void *)gpa);
return -1;
}
if (reg->flags.alloced == 0) {
- //PrintError("In GPA->HPA: Tried to translate physical address of non allocated page (addr=%p)\n",
+ //PrintDebug("In GPA->HPA: Tried to translate physical address of non allocated page (addr=%p)\n",
// (void *)gpa);
//v3_print_mem_map(info->vm_info);
return -1;
//
int v3_hpa_to_gpa(struct guest_info * guest_info, addr_t hpa, addr_t * gpa) {
*gpa = 0;
- PrintError("ERROR!!! HPA->GPA currently not implemented!!!\n");
+ PrintDebug("ERROR!!! HPA->GPA currently not implemented!!!\n");
return -1;
}
*gpa = 0;
if (v3_hva_to_hpa(hva, &hpa) != 0) {
- PrintError("In HVA->GPA: Invalid HVA(%p)->HPA lookup\n",
+ PrintDebug("In HVA->GPA: Invalid HVA(%p)->HPA lookup\n",
(void *)hva);
return -1;
}
if (v3_hpa_to_gpa(guest_info, hpa, gpa) != 0) {
- PrintError("In HVA->GPA: Invalid HPA(%p)->GPA lookup\n",
+ PrintDebug("In HVA->GPA: Invalid HPA(%p)->GPA lookup\n",
(void *)hpa);
return -1;
}
*hva = 0;
if (v3_gpa_to_hpa(guest_info, gpa, &hpa) != 0) {
- // PrintError("In GPA->HVA: Invalid GPA(%p)->HPA lookup\n",
+ // PrintDebug("In GPA->HVA: Invalid GPA(%p)->HPA lookup\n",
// (void *)gpa);
return -1;
}
if (v3_hpa_to_hva(hpa, hva) != 0) {
- PrintError("In GPA->HVA: Invalid HPA(%p)->HVA lookup\n",
+ PrintDebug("In GPA->HVA: Invalid HPA(%p)->HVA lookup\n",
(void *)hpa);
return -1;
}
switch (guest_info->cpu_mode) {
case PROTECTED:
if (v3_translate_guest_pt_32(guest_info, guest_cr3, gva, gpa) == -1) {
- /*PrintDebug("Could not translate addr (%p) through 32 bit guest PT at %p\n",
- (void *)gva, (void *)(addr_t)guest_cr3);*/
+ PrintDebug("Could not translate addr (%p) through 32 bit guest PT at %p\n",
+ (void *)gva, (void *)(addr_t)guest_cr3);
return -1;
}
break;
case PROTECTED_PAE:
if (v3_translate_guest_pt_32pae(guest_info, guest_cr3, gva, gpa) == -1) {
- /*PrintDebug("Could not translate addr (%p) through 32 bitpae guest PT at %p\n",
- (void *)gva, (void *)(addr_t)guest_cr3);*/
+ PrintDebug("Could not translate addr (%p) through 32 bitpae guest PT at %p\n",
+ (void *)gva, (void *)(addr_t)guest_cr3);
return -1;
}
break;
case LONG_32_COMPAT:
case LONG_16_COMPAT:
if (v3_translate_guest_pt_64(guest_info, guest_cr3, gva, gpa) == -1) {
- /*PrintDebug("Could not translate addr (%p) through 64 bit guest PT at %p\n",
- (void *)gva, (void *)(addr_t)guest_cr3);*/
+ PrintDebug("Could not translate addr (%p) through 64 bit guest PT at %p\n",
+ (void *)gva, (void *)(addr_t)guest_cr3);
return -1;
}
break;
*/
int v3_gpa_to_gva(struct guest_info * guest_info, addr_t gpa, addr_t * gva) {
*gva = 0;
- PrintError("ERROR!!: GPA->GVA Not Implemented!!\n");
+ PrintDebug("ERROR!!: GPA->GVA Not Implemented!!\n");
return -1;
}
*hpa = 0;
if (v3_gva_to_gpa(guest_info, gva, &gpa) != 0) {
- PrintError("In GVA->HPA: Invalid GVA(%p)->GPA lookup\n",
+ PrintDebug("In GVA->HPA: Invalid GVA(%p)->GPA lookup\n",
(void *)gva);
return -1;
}
if (v3_gpa_to_hpa(guest_info, gpa, hpa) != 0) {
- PrintError("In GVA->HPA: Invalid GPA(%p)->HPA lookup\n",
+ PrintDebug("In GVA->HPA: Invalid GPA(%p)->HPA lookup\n",
(void *)gpa);
return -1;
}
*gva = 0;
if (v3_hpa_to_gpa(guest_info, hpa, &gpa) != 0) {
- PrintError("In HPA->GVA: Invalid HPA(%p)->GPA lookup\n",
+ PrintDebug("In HPA->GVA: Invalid HPA(%p)->GPA lookup\n",
(void *)hpa);
return -1;
}
if (v3_gpa_to_gva(guest_info, gpa, gva) != 0) {
- PrintError("In HPA->GVA: Invalid GPA(%p)->GVA lookup\n",
+ PrintDebug("In HPA->GVA: Invalid GPA(%p)->GVA lookup\n",
(void *)gpa);
return -1;
}
*hva = 0;
if (v3_gva_to_gpa(guest_info, gva, &gpa) != 0) {
- /*PrintError("In GVA->HVA: Invalid GVA(%p)->GPA lookup\n",
- (void *)gva);*/
+ PrintDebug("In GVA->HVA: Invalid GVA(%p)->GPA lookup\n",
+ (void *)gva);
return -1;
}
if (v3_gpa_to_hpa(guest_info, gpa, &hpa) != 0) {
- PrintError("In GVA->HVA: Invalid GPA(%p)->HPA lookup\n",
+ PrintDebug("In GVA->HVA: Invalid GPA(%p)->HPA lookup\n",
(void *)gpa);
return -1;
}
if (v3_hpa_to_hva(hpa, hva) != 0) {
- PrintError("In GVA->HVA: Invalid HPA(%p)->HVA lookup\n",
+ PrintDebug("In GVA->HVA: Invalid HPA(%p)->HVA lookup\n",
(void *)hpa);
return -1;
}
*gva = 0;
if (v3_hva_to_hpa(hva, &hpa) != 0) {
- PrintError("In HVA->GVA: Invalid HVA(%p)->HPA lookup\n",
+ PrintDebug("In HVA->GVA: Invalid HVA(%p)->HPA lookup\n",
(void *)hva);
return -1;
}
if (v3_hpa_to_gpa(guest_info, hpa, &gpa) != 0) {
- PrintError("In HVA->GVA: Invalid HPA(%p)->GPA lookup\n",
+ PrintDebug("In HVA->GVA: Invalid HPA(%p)->GPA lookup\n",
(void *)hva);
return -1;
}
if (v3_gpa_to_gva(guest_info, gpa, gva) != 0) {
- PrintError("In HVA->GVA: Invalid GPA(%p)->GVA lookup\n",
+ PrintDebug("In HVA->GVA: Invalid GPA(%p)->GVA lookup\n",
(void *)gpa);
return -1;
}
-/* KCH: currently only checks if we can perform a user-mode write
- return 1 on success */
-int v3_gva_can_access(struct guest_info * core, addr_t gva) {
-
- v3_reg_t guest_cr3 = 0;
- pf_error_t access_type;
- pt_access_status_t access_status;
-
- access_type.write = 1;
- access_type.user = 1;
-
- if (core->mem_mode == PHYSICAL_MEM) {
- return -1;
- }
-
- if (core->shdw_pg_mode == SHADOW_PAGING) {
- guest_cr3 = core->shdw_pg_state.guest_cr3;
- } else {
- guest_cr3 = core->ctrl_regs.cr3;
- }
-
- // guest is in paged mode
- switch (core->cpu_mode) {
- case PROTECTED:
- if (v3_check_guest_pt_32(core, guest_cr3, gva, access_type, &access_status) == -1) {
- return -1;
- }
- break;
- case PROTECTED_PAE:
- if (v3_check_guest_pt_32pae(core, guest_cr3, gva, access_type, &access_status) == -1) {
- return -1;
- }
- break;
- case LONG:
- case LONG_32_COMPAT:
- case LONG_16_COMPAT:
- if (v3_check_guest_pt_64(core, guest_cr3, gva, access_type, &access_status) == -1) {
- return -1;
- }
- break;
- default:
- return -1;
- }
-
- if (access_status != PT_ACCESS_OK) {
- return 0;
- } else {
- return 1;
- }
-}
}
+/* This clones v3_read_gva_memory
+ * We write only as far as page translations are available
+ */
+int v3_write_gva_memory(struct guest_info * guest_info, addr_t gva, int count, uchar_t * src) {
+ addr_t cursor = gva;
+ int bytes_written = 0;
+
+
+
+ while (count > 0) {
+ int dist_to_pg_edge = (PAGE_ADDR(cursor) + PAGE_SIZE) - cursor;
+ int bytes_to_copy = (dist_to_pg_edge > count) ? count : dist_to_pg_edge;
+ addr_t host_addr = 0;
+
+
+ if (v3_gva_to_hva(guest_info, cursor, &host_addr) != 0) {
+ PrintDebug("Invalid GVA(%p)->HVA lookup\n", (void *)cursor);
+ 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;
+}
+
+
/* This is a straight address conversion + copy,