mach_vm_object_pages: Print a warning if the physical address is beyond 4GiB

vpi_offset is not currently large enough to store it.

1 files changed, 2 insertions, 0 deletions

diff --git a/vm/vm_debug.c b/vm/vm_debug.c
index 43221cff..2dff2296 100644
--- a/vm/vm_debug.c
+++ b/vm/vm_debug.c
@@ -321,6 +321,8 @@ mach_vm_object_pages(
 		vm_page_info_state_t state = 0;
 
 		info->vpi_offset = p->offset;
+		if (p->phys_addr != (typeof(info->vpi_phys_addr)) p->phys_addr)
+			printf("warning: physical address overflow in mach_vm_object_pages!!");
 		info->vpi_phys_addr = p->phys_addr;
 		info->vpi_wire_count = p->wire_count;
 		info->vpi_page_lock = p->page_lock;