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-rw-r--r--hw/multiboot.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/multiboot.c b/hw/multiboot.c
index 7cc3055359..0d2bfb4973 100644
--- a/hw/multiboot.c
+++ b/hw/multiboot.c
@@ -306,7 +306,7 @@ int load_multiboot(void *fw_cfg,
                                 | MULTIBOOT_FLAGS_MODULES
                                 | MULTIBOOT_FLAGS_MMAP);
     stl_p(bootinfo + MBI_MEM_LOWER,   640);
-    stl_p(bootinfo + MBI_MEM_UPPER,   ram_size / 1024);
+    stl_p(bootinfo + MBI_MEM_UPPER,   (ram_size / 1024) - 1024);
     stl_p(bootinfo + MBI_BOOT_DEVICE, 0x8001ffff); /* XXX: use the -boot switch? */
     stl_p(bootinfo + MBI_MMAP_ADDR,   ADDR_E820_MAP);