X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/d1ecb069dfe24481e4a83f44cb5217a2b06746d7..0b4c1975fb5e4eccf1012a35081f7e7799b81046:/osfmk/i386/hibernate_i386.c

diff --git a/osfmk/i386/hibernate_i386.c b/osfmk/i386/hibernate_i386.c
index f164b8ec9..b333db549 100644
--- a/osfmk/i386/hibernate_i386.c
+++ b/osfmk/i386/hibernate_i386.c
@@ -44,8 +44,12 @@
 #include <vm/vm_page.h>
 #include <i386/i386_lowmem.h>
 
+extern ppnum_t max_ppnum;
+
 #define MAX_BANKS	32
 
+int hibernate_page_list_allocate_avoided;
+
 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 hibernate_page_list_t *
@@ -69,11 +73,18 @@ hibernate_page_list_allocate(void)
     msize = args->MemoryMapDescriptorSize;
     mcount = args->MemoryMapSize / msize;
 
+    hibernate_page_list_allocate_avoided = 0;
+
     num_banks = 0;
     for (i = 0; i < mcount; i++, mptr = (EfiMemoryRange *)(((vm_offset_t)mptr) + msize))
     {
 	base = (ppnum_t) (mptr->PhysicalStart >> I386_PGSHIFT);
 	num = (ppnum_t) mptr->NumberOfPages;
+
+	if (base > max_ppnum)
+		continue;
+	if ((base + num - 1) > max_ppnum)
+		num = max_ppnum - base + 1;
 	if (!num)
 	    continue;
 
@@ -120,6 +131,9 @@ hibernate_page_list_allocate(void)
 	    case kEfiRuntimeServicesData:
 	    // contents are volatile once the platform expert starts
 	    case kEfiACPIReclaimMemory:
+		hibernate_page_list_allocate_avoided += num;
+		break;
+
 	    // non dram
 	    case kEfiReservedMemoryType:
 	    case kEfiUnusableMemory: