bool PAEPaging::unmap_page_table( Address addr)
{
unsigned pdp_id = get_page_directory_pointer_off(addr , mode);
unsigned pd_id = get_page_directory_off(addr , mode);
PageTable* pd_ptr = get_next_level_address<PageTable>( page_directory_pointer , pdp_id);
if( pd_ptr )
{
if( mode == PAE_Normal)
{
PageTable* pt_ptr = get_next_level_address<PageTable>(pd_ptr , pd_id);
if( pt_ptr )
{
unsigned pt_id = get_pagetable_off(addr,mode);
invalidate_page( pt_ptr , pt_id );
return true;
}
}
else if( mode == PAE_Huge)
{
invalidate_page(pd_ptr , pd_id);
return true;
}
}
return false;
}
void invalidate_page_wrapper(gpointer data, gpointer user_data) {
ClientEntry* client = (ClientEntry*) data;
PageRequest* request = (PageRequest*) user_data;
if (client->clientId != request->nodeId) {
InvalidationResponse* response = invalidate_page(request->nodeId, request->pageNumber, client);
free(response);
}
}
bool LongModePaging::unmap_page_table( Address addr)
{
unsigned pml4_id,pdp_id,pd_id,pt_id;
std::vector<unsigned> entry_id_vec(4);
get_domains(addr , pml4_id , pdp_id , pd_id , pt_id , mode);
entry_id_vec[0]=pml4_id;
entry_id_vec[1]=pdp_id;
entry_id_vec[2]=pd_id;
PageTable* table = NULL;
//point to page directory pointer table
if( mode == LongMode_Normal)
{
table = get_tables(3, entry_id_vec);
if( !table )
{
debug_printf("didn't find entry indexed with %ld !",addr);
return false;
}
invalidate_page(table,pt_id);
}
else if( mode == LongMode_Middle )
{
table = get_tables(2,entry_id_vec);
if( !table)
{
debug_printf("didn't find entry indexed with %ld !",addr);
return false;
}
invalidate_page( table,pd_id);
}
else if( mode == LongMode_Huge)
{
table = get_tables(1,entry_id_vec);
if(!table)
{
debug_printf("didn't find entry indexed with %ld !",addr);
return false;
}
invalidate_page(table,pdp_id);
}
return false;
}
bool NormalPaging::unmap_page_table( Address addr)
{
unsigned pd_entry_id = get_page_directory_off(addr,mode);
if( mode == Legacy_Normal )
{
unsigned pt_id = get_pagetable_off(addr,mode);
PageTable* table = NULL;
if(page_directory)
{
get_next_level_address<PageTable>(page_directory , pd_entry_id);
}
if( !table )
{
debug_printf("entry to be invalidate of TLB isn't valid!");
return false;
}
invalidate_page( table , pt_id );
}
else if( mode == Legacy_Huge )
{
invalidate_page( page_directory , pd_entry_id);
}
return true;
}
/** Invalidate TLB entries for specified page range belonging to specified
* address space.
*
* @param asid Ignored as the ARM architecture doesn't support it.
* @param page Address of the first page whose entry is to be invalidated.
* @param cnt Number of entries to invalidate.
*/
void tlb_invalidate_pages(asid_t asid __attribute__((unused)), uintptr_t page, size_t cnt)
{
for (unsigned i = 0; i < cnt; i++)
invalidate_page(page + i * PAGE_SIZE);
}