X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_direct_paging_32pae.h;h=fb97ee49739748aae3a00b18e77005e018a3a4a6;hp=d681969eff96f00666f52520236bdd9009b954bc;hb=b06d0d0e5e57f5c4163a69efcabe6f96594ad814;hpb=defcfbf9d03f49b7895ba23ca510782477a3425c

diff --git a/palacios/src/palacios/vmm_direct_paging_32pae.h b/palacios/src/palacios/vmm_direct_paging_32pae.h
index d681969..fb97ee4 100644
--- a/palacios/src/palacios/vmm_direct_paging_32pae.h
+++ b/palacios/src/palacios/vmm_direct_paging_32pae.h
@@ -120,4 +120,49 @@ static inline int handle_passthrough_pagefault_32pae(struct guest_info * info,
 }
 
 
+static inline int invalidate_addr_32pae(struct guest_info * info, addr_t inv_addr) {
+    pdpe32pae_t * pdpe = NULL;
+    pde32pae_t * pde = NULL;
+    pte32pae_t * pte = NULL;
+
+
+    // TODO:
+    // Call INVLPGA
+
+    // clear the page table entry
+    int pdpe_index = PDPE32PAE_INDEX(inv_addr);
+    int pde_index = PDE32PAE_INDEX(inv_addr);
+    int pte_index = PTE32PAE_INDEX(inv_addr);
+
+    
+    // Lookup the correct PDE address based on the PAGING MODE
+    if (info->shdw_pg_mode == SHADOW_PAGING) {
+	pdpe = CR3_TO_PDPE32PAE_VA(info->ctrl_regs.cr3);
+    } else {
+	pdpe = CR3_TO_PDPE32PAE_VA(info->direct_map_pt);
+    }    
+
+
+    if (pdpe[pdpe_index].present == 0) {
+	return 0;
+    }
+
+    pde = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pdpe[pdpe_index].pd_base_addr));
+
+    if (pde[pde_index].present == 0) {
+	return 0;
+    } else if (pde[pde_index].large_page) {
+	pde[pde_index].present = 0;
+	return 0;
+    }
+
+    pte = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pde[pde_index].pt_base_addr));
+
+    pte[pte_index].present = 0;
+
+    return 0;
+}
+
+
+
 #endif