[Qemu-devel] [PATCH] multiboot: Fix upper memory size in multiboot info

[Kevin Wolf]

The upper memory size field should exclude the first MB of RAM.

Signed-off-by: Kevin Wolf <address@hidden>
---
 hw/multiboot.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/hw/multiboot.c b/hw/multiboot.c
index 7cc3055..0d2bfb4 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);
 
-- 
1.6.0.2