rem: dprintf("vid_mem region = 0x%x\n", region);
add: dprintf("vid_mem region = 0x%lx\n", region);
context: void vm_test(){//	region_id region, region2, region3;//	addr region_addr;//	int i;	dprintf("vm_test: entry\n");#if 1	dprintf("vm_test 1: creating anonymous region and writing to it\n");	{		region_id region;		addr region_addr;		region = vm_create_anonymous_region(vm_get_kernel_aspace_id(), "test_region", (void **)&region_addr,			REGION_ADDR_ANY_ADDRESS, PAGE_SIZE * 16, REGION_WIRING_LAZY, LOCK_RW|LOCK_KERNEL);		if(region < 0)			panic("vm_test 1: failed to create test region\n");		dprintf("region = 0x%x, addr = 0x%lx\n", region, region_addr);		memset((void *)region_addr, 0, PAGE_SIZE * 16);		dprintf("memsetted the region\n");		if(vm_delete_region(vm_get_kernel_aspace_id(), region) < 0)			panic("vm_test 1: error deleting test region\n");		dprintf("deleted the region\n");	}#endif#if 1	dprintf("vm_test 2: creating physical region and writing and reading from it\n");	{		region_id region;		vm_region_info info;		char *ptr;		int i;		region = vm_map_physical_memory(vm_get_kernel_aspace_id(), "test_physical_region", (void **)&ptr,			REGION_ADDR_ANY_ADDRESS, PAGE_SIZE * 16, LOCK_RW|LOCK_KERNEL, 0xb8000);		if(region < 0)			panic("vm_test 2: failed to create test region\n");		vm_get_region_info(region, &info);		dprintf("region = 0x%x, addr = %p, region->base = 0x%lx\n", region, ptr, info.base);		if((addr)ptr != info.base)			panic("vm_test 2: info returned about region does not match pointer returned\n");		for(i=0; i<64; i++) {			ptr[i] = 'a';		}		if(vm_delete_region(vm_get_kernel_aspace_id(), region) < 0)			panic("vm_test 2: error deleting test region\n");		dprintf("deleted the region\n");	}#endif#if 1	dprintf("vm_test 3: testing some functionality of vm_get_page_mapping(), vm_get/put_physical_page()\n");	{		addr va, pa;		addr va2;		vm_get_page_mapping(vm_get_kernel_aspace_id(), 0x80000000, &pa);		vm_get_physical_page(pa, &va, PHYSICAL_PAGE_CAN_WAIT);		dprintf("pa 0x%lx va 0x%lx\n", pa, va);		dprintf("%d\n", memcmp((void *)0x80000000, (void *)va, PAGE_SIZE));		vm_get_page_mapping(vm_get_kernel_aspace_id(), 0x80001000, &pa);		vm_get_physical_page(pa, &va2, PHYSICAL_PAGE_CAN_WAIT);		dprintf("pa 0x%lx va 0x%lx\n", pa, va2);		dprintf("%d\n", memcmp((void *)0x80001000, (void *)va2, PAGE_SIZE));		vm_put_physical_page(va);		vm_put_physical_page(va2);		vm_get_page_mapping(vm_get_kernel_aspace_id(), 0x80000000, &pa);		vm_get_physical_page(pa, &va, PHYSICAL_PAGE_CAN_WAIT);		dprintf("pa 0x%lx va 0x%lx\n", pa, va);		dprintf("%d\n", memcmp((void *)0x80000000, (void *)va, PAGE_SIZE));		vm_put_physical_page(va);	}#endif#if 1	dprintf("vm_test 4: cloning vidmem and testing if it compares\n");	{		region_id region, region2;		vm_region_info info;		void *ptr;		int rc;		region = vm_find_region_by_name(vm_get_kernel_aspace_id(), "vid_mem");		if(region < 0)			panic("vm_test 4: error finding region 'vid_mem'\n");		dprintf("vid_mem region = 0x%x\n", region);		region2 = vm_clone_region(vm_get_kernel_aspace_id(), "vid_mem2",			&ptr, REGION_ADDR_ANY_ADDRESS, region, REGION_NO_PRIVATE_MAP, LOCK_RW|LOCK_KERNEL);		if(region2 < 0)			panic("vm_test 4: error cloning region 'vid_mem'\n");		dprintf("region2 = 0x%x, ptr = %p\n", region2, ptr);		vm_get_region_info(region, &info);		rc = memcmp(ptr, (void *)info.base, info.size);		if(rc != 0)			panic("vm_test 4: regions are not identical\n");		else			dprintf("vm_test 4: comparison ok\n");		if(vm_delete_region(vm_get_kernel_aspace_id(), region2) < 0)			panic("vm_test 4: error deleting cloned region\n");	}#endif#if 1	dprintf("vm_test 5: cloning vidmem in RO and testing if it compares\n");	{		region_id region, region2;		vm_region_info info;		void *ptr;		int rc;		region = vm_find_region_by_name(vm_get_kernel_aspace_id(), "vid_mem");		if(region < 0)			panic("vm_test 5: error finding region 'vid_mem'\n");		dprintf("vid_mem region = 0x%x\n", region);		region2 = vm_clone_region(vm_get_kernel_aspace_id(), "vid_mem3",			&ptr, REGION_ADDR_ANY_ADDRESS, region, REGION_NO_PRIVATE_MAP, LOCK_RO|LOCK_KERNEL);		if(region2 < 0)			panic("vm_test 5: error cloning region 'vid_mem'\n");		dprintf("region2 = 0x%x, ptr = %p\n", region2, ptr);		vm_get_region_info(region, &info);		rc = memcmp(ptr, (void *)info.base, info.size);		if(rc != 0)			panic("vm_test 5: regions are not identical\n");		else			dprintf("vm_test 5: comparison ok\n");		if(vm_delete_region(vm_get_kernel_aspace_id(), region2) < 0)			panic("vm_test 5: error deleting cloned region\n");	}#endif#if 1	dprintf("vm_test 6: creating anonymous region, cloning it, and testing if it compares\n");	{		region_id region, region2;		void *region_addr;		void *ptr;		int rc;		region = vm_create_anonymous_region(vm_get_kernel_aspace_id(), "test_region", &region_addr,			REGION_ADDR_ANY_ADDRESS, PAGE_SIZE * 16, REGION_WIRING_LAZY, LOCK_RW|LOCK_KERNEL);		if(region < 0)			panic("vm_test 6: error creating test region\n");		dprintf("region = 0x%x, addr = %p\n", region, region_addr);		memset(region_addr, 99, PAGE_SIZE * 16);		dprintf("memsetted the region\n");		region2 = vm_clone_region(vm_get_kernel_aspace_id(), "test_region2",			&ptr, REGION_ADDR_ANY_ADDRESS, region, REGION_NO_PRIVATE_MAP, LOCK_RW|LOCK_KERNEL);		if(region2 < 0)			panic("vm_test 6: error cloning test region\n");		dprintf("region2 = 0x%x, ptr = %p\n", region2, ptr);		rc = memcmp(region_addr, ptr, PAGE_SIZE * 16);		if(rc != 0)			panic("vm_test 6: regions are not identical\n");		else			dprintf("vm_test 6: comparison ok\n");		if(vm_delete_region(vm_get_kernel_aspace_id(), region) < 0)			panic("vm_test 6: error deleting test region\n");		if(vm_delete_region(vm_get_kernel_aspace_id(), region2) < 0)			panic("vm_test 6: error deleting cloned region\n");	}#endif#if 1	dprintf("vm_test 7: mmaping a known file a few times and verifying they see the same data\n");	{		void *ptr, *ptr2;		region_id rid, rid2;//		char *blah;		int fd;		fd = sys_open("/boot/kernel", 0);		rid = vm_map_file(vm_get_kernel_aspace_id(), "mmap_test", &ptr, REGION_ADDR_ANY_ADDRESS,			PAGE_SIZE, LOCK_RW|LOCK_KERNEL, REGION_NO_PRIVATE_MAP, "/boot/kernel", 0);		rid2 = vm_map_file(vm_get_kernel_aspace_id(), "mmap_test2", &ptr2, REGION_ADDR_ANY_ADDRESS,			PAGE_SIZE, LOCK_RW|LOCK_KERNEL, REGION_NO_PRIVATE_MAP, "/boot/kernel", 0);		dprintf("diff %d\n", memcmp(ptr, ptr2, PAGE_SIZE));		dprintf("removing regions\n");		vm_delete_region(vm_get_kernel_aspace_id(), rid);		vm_delete_region(vm_get_kernel_aspace_id(), rid2);		dprintf("regions deleted\n");		sys_close(fd);		dprintf("vm_test 7: passed\n");	}#endif#if 1	dprintf("vm_test 8: creating anonymous region, cloning it with private mapping\n");	{		region_id region, region2;		void *region_addr;		void *ptr;		int rc;		dprintf("vm_test 8: creating test region...\n");		region = vm_create_anonymous_region(vm_get_kernel_aspace_id(), "test_region", &region_addr,			REGION_ADDR_ANY_ADDRESS, PAGE_SIZE * 16, REGION_WIRING_LAZY, LOCK_RW|LOCK_KERNEL);		if(region < 0)			panic("vm_test 8: error creating test region\n");		dprintf("region = 0x%x, addr = %p\n", region, region_addr);		dprintf("vm_test 8: memsetting the first 2 pages\n");		memset(region_addr, 99, PAGE_SIZE * 2);		dprintf("vm_test 8: cloning test region with PRIVATE_MAP\n");		region2 = vm_clone_region(vm_get_kernel_aspace_id(), "test_region2",			&ptr, REGION_ADDR_ANY_ADDRESS, region, REGION_PRIVATE_MAP, LOCK_RW|LOCK_KERNEL);		if(region2 < 0)			panic("vm_test 8: error cloning test region\n");		dprintf("region2 = 0x%x, ptr = %p\n", region2, ptr);		dprintf("vm_test 8: comparing first 2 pages, shoudld be identical\n");		rc = memcmp(region_addr, ptr, PAGE_SIZE * 2);		if(rc != 0)			panic("vm_test 8: regions are not identical\n");		else			dprintf("vm_test 8: comparison ok\n");		dprintf("vm_test 8: changing one page in the clone and comparing, should now differ\n");		memset(ptr, 1, 1);		rc = memcmp(region_addr, ptr, PAGE_SIZE);		if(rc != 0)			dprintf("vm_test 8: regions are not identical, good\n");		else			panic("vm_test 8: comparison shows not private mapping\n");		dprintf("vm_test 8: comparing untouched pages in source and clone, should be identical\n");		rc = memcmp((char *)region_addr + 2*PAGE_SIZE, (char *)ptr + 2*PAGE_SIZE, PAGE_SIZE * 1);		if(rc != 0)			panic("vm_test 8: regions are not identical\n");		else			dprintf("vm_test 8: comparison ok\n");		dprintf("vm_test 8: modifying source page and comparing, should be the same\n");		memset((char *)region_addr + 3*PAGE_SIZE, 2, 4);		rc = memcmp((char *)region_addr + 3*PAGE_SIZE, (char *)ptr + 3*PAGE_SIZE, PAGE_SIZE * 1);		if(rc != 0)			panic("vm_test 8: regions are not identical\n");		else			dprintf("vm_test 8: comparison ok\n");		dprintf("vm_test 8: modifying new page in clone, should not effect source, which is also untouched\n");		memset((char *)ptr + 4*PAGE_SIZE, 2, 4);		rc = memcmp((char *)region_addr + 4*PAGE_SIZE, (char *)ptr + 4*PAGE_SIZE, PAGE_SIZE * 1);		if(rc != 0)			dprintf("vm_test 8: regions are not identical, good\n");		else			panic("vm_test 8: comparison shows not private mapping\n");		if(vm_delete_region(vm_get_kernel_aspace_id(), region) < 0)			panic("vm_test 8: error deleting test region\n");		if(vm_delete_region(vm_get_kernel_aspace_id(), region2) < 0)			panic("vm_test 8: error deleting cloned region\n");	}#endif#if 1	dprintf("vm_test 9: mmaping a known file a few times, one with private mappings\n");	{		void *ptr, *ptr2;		region_id rid, rid2;		int err;		dprintf("vm_test 9: mapping /boot/kernel twice\n");		rid = vm_map_file(vm_get_kernel_aspace_id(), "mmap_test", &ptr, REGION_ADDR_ANY_ADDRESS,			PAGE_SIZE*4, LOCK_RW|LOCK_KERNEL, REGION_NO_PRIVATE_MAP, "/boot/kernel", 0);		rid2 = vm_map_file(vm_get_kernel_aspace_id(), "mmap_test2", &ptr2, REGION_ADDR_ANY_ADDRESS,			PAGE_SIZE*4, LOCK_RW|LOCK_KERNEL, REGION_PRIVATE_MAP, "/boot/kernel", 0);		err = memcmp(ptr, ptr2, PAGE_SIZE);		if(err)			panic("vm_test 9: two mappings are different\n");		dprintf("vm_test 9: modifying private mapping in section that has been referenced, should be different\n");		memset(ptr2, 0xaa, 4);		err = memcmp(ptr, ptr2, PAGE_SIZE);		if(!err)			panic("vm_test 9: two mappings still identical\n");		dprintf("vm_test 9: modifying private mapping in section that hasn't been touched, should be different\n");		memset((char *)ptr2 + PAGE_SIZE, 0xaa, 4);		err = memcmp((char *)ptr + PAGE_SIZE, (char *)ptr2 + PAGE_SIZE, PAGE_SIZE);		if(!err)			panic("vm_test 9: two mappings still identical\n");		dprintf("vm_test 9: modifying non-private mapping in section that hasn't been touched\n");		memset((char *)ptr + PAGE_SIZE*2, 0xaa, 4);		err = memcmp((char *)ptr + PAGE_SIZE*2, (char *)ptr2 + PAGE_SIZE*2, PAGE_SIZE);		if(err)			panic("vm_test 9: two mappings are different\n");		dprintf("vm_test 9: removing regions\n");		vm_delete_region(vm_get_kernel_aspace_id(), rid);		vm_delete_region(vm_get_kernel_aspace_id(), rid2);		dprintf("vm_test 9: regions deleted\n");		dprintf("vm_test 9: passed\n");	}#endif	dprintf("vm_test: done\n");}