moved shadow paging implementations over to new memory region flags structure

[palacios.git] / palacios / src / palacios / mmu / vmm_shdw_pg_tlb_32.h

diff --git a/palacios/src/palacios/mmu/vmm_shdw_pg_tlb_32.h b/palacios/src/palacios/mmu/vmm_shdw_pg_tlb_32.h
index 4771c0e..91ae34e 100644 (file)
--- a/palacios/src/palacios/mmu/vmm_shdw_pg_tlb_32.h
+++ b/palacios/src/palacios/mmu/vmm_shdw_pg_tlb_32.h
@@ -161,8 +161,6 @@ static inline int handle_shadow_pagefault_32(struct guest_info * info, addr_t fa
        guest_pde->accessed = 1;
       
 
-
-
        shadow_pde->pt_base_addr = PAGE_BASE_ADDR(shdw_page->page_pa);
     } else {
        shadow_pt = (pte32_t *)V3_VAddr((void *)BASE_TO_PAGE_ADDR(shadow_pde->pt_base_addr));
@@ -248,8 +246,7 @@ static int handle_pte_shadow_pagefault_32(struct guest_info * info, addr_t fault
        // Page Table Entry Not Present
        PrintDebug("guest_pa =%p\n", (void *)guest_pa);
 
-       if ((shdw_reg->host_type == SHDW_REGION_ALLOCATED) ||
-           (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK)) {
+       if ((shdw_reg->flags.alloced == 1) && (shdw_reg->flags.read == 1)) {
            addr_t shadow_pa = v3_get_shadow_addr(shdw_reg, info->cpu_id, guest_pa);
       
            shadow_pte->page_base_addr = PAGE_BASE_ADDR(shadow_pa);
@@ -279,11 +276,11 @@ static int handle_pte_shadow_pagefault_32(struct guest_info * info, addr_t fault
 
 
            // Write hooks trump all, and are set Read Only
-           if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
+           if (shdw_reg->flags.write == 0) {
                shadow_pte->writable = 0;
            }
 
-       } else {
+       } else if (shdw_reg->flags.hook == 1) {
            // Page fault handled by hook functions
 
            if (v3_handle_mem_hook(info, fault_addr, guest_pa, shdw_reg, error_code) == -1) {
@@ -294,7 +291,7 @@ static int handle_pte_shadow_pagefault_32(struct guest_info * info, addr_t fault
     } else if (shadow_pte_access == PT_ACCESS_WRITE_ERROR) {
        guest_pte->dirty = 1;
 
-       if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
+       if (shdw_reg->flags.hook == 1) {
            if (v3_handle_mem_hook(info, fault_addr, guest_pa, shdw_reg, error_code) == -1) {
                PrintError("Special Page fault handler returned error for address: %p\n",  (void *)fault_addr);
                return -1;
@@ -357,8 +354,8 @@ static int handle_4MB_shadow_pagefault_32(struct guest_info * info,
     if (shadow_pte_access == PT_ACCESS_NOT_PRESENT) {
        // Get the guest physical address of the fault
 
-       if ((shdw_reg->host_type == SHDW_REGION_ALLOCATED) || 
-           (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK)) {
+       if ((shdw_reg->flags.alloced == 1) && 
+           (shdw_reg->flags.read  == 1)) {
            addr_t shadow_pa = v3_get_shadow_addr(shdw_reg, info->cpu_id, guest_fault_pa);
 
            shadow_pte->page_base_addr = PAGE_BASE_ADDR(shadow_pa);
@@ -374,19 +371,20 @@ static int handle_4MB_shadow_pagefault_32(struct guest_info * info,
             */
            shadow_pte->user_page = 1;
 
-           if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
-               shadow_pte->writable = 0;
-           } else {
-               shadow_pte->writable = 1;
-           }
-
            //set according to VMM policy
            shadow_pte->write_through = large_guest_pde->write_through;
            shadow_pte->cache_disable = large_guest_pde->cache_disable;
            shadow_pte->global_page = large_guest_pde->global_page;
            //
       
-       } else {
+
+           if (shdw_reg->flags.write == 0) {
+               shadow_pte->writable = 0;
+           } else {
+               shadow_pte->writable = 1;
+           }
+
+       } else if (shdw_reg->flags.hook == 1) {
            if (v3_handle_mem_hook(info, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) {
                PrintError("Special Page Fault handler returned error for address: %p\n", (void *)fault_addr);
                return -1;
@@ -394,8 +392,7 @@ static int handle_4MB_shadow_pagefault_32(struct guest_info * info,
        }
     } else if (shadow_pte_access == PT_ACCESS_WRITE_ERROR) {
 
-       if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
-
+       if (shdw_reg->flags.hook == 1) {
            if (v3_handle_mem_hook(info, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) {
                PrintError("Special Page Fault handler returned error for address: %p\n", (void *)fault_addr);
                return -1;