X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_direct_paging_32.h;h=047f2a6e7e0cf2b77f8119f58f9b977de8a06faf;hb=fd9690bf0f032246f2d2c596e2467cccc45faff6;hp=bfbb4a3f40ea3963d12b3e7ed084162358a2c2cc;hpb=36c1666cf64c49302d906a79d8cafbf760452d86;p=palacios.git diff --git a/palacios/src/palacios/vmm_direct_paging_32.h b/palacios/src/palacios/vmm_direct_paging_32.h index bfbb4a3..047f2a6 100644 --- a/palacios/src/palacios/vmm_direct_paging_32.h +++ b/palacios/src/palacios/vmm_direct_paging_32.h @@ -75,34 +75,26 @@ static inline int handle_passthrough_pagefault_32(struct guest_info * info, pte[pte_index].user_page = 1; - if (region->host_type == SHDW_REGION_ALLOCATED) { - // Full access - pte[pte_index].present = 1; - pte[pte_index].writable = 1; - - pte[pte_index].page_base_addr = PAGE_BASE_ADDR(host_addr); - } else if (region->host_type == SHDW_REGION_WRITE_HOOK) { - // Only trap writes - PrintDebug("Faulted in a write hook page\n"); + if ((region->flags.alloced == 1) && + (region->flags.read == 1)) { + pte[pte_index].present = 1; - pte[pte_index].writable = 0; + + if (region->flags.write == 1) { + pte[pte_index].writable = 1; + } else { + pte[pte_index].writable = 0; + } pte[pte_index].page_base_addr = PAGE_BASE_ADDR(host_addr); - } else if (region->host_type == SHDW_REGION_FULL_HOOK) { - // trap all accesses - return v3_handle_mem_full_hook(info, fault_addr, fault_addr, region, error_code); - } else { - PrintError("Unknown Region Type...\n"); - return -1; } } - - if ( (region->host_type == SHDW_REGION_WRITE_HOOK) && - (error_code.write == 1) ) { - PrintDebug("Triggering Direct paging Write hook\n"); - return v3_handle_mem_wr_hook(info, fault_addr, fault_addr, region, error_code); - } + if (region->flags.hook == 1) { + if ((error_code.write == 1) || (region->flags.read == 0)) { + return v3_handle_mem_hook(info, fault_addr, fault_addr, region, error_code); + } + } return 0; }