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multiboot: Prevent loading of x86_64 images 

A via -kernel supplied x86_64 ELF image is being started in 32bit mode.
Detect and exit if a 64bit image has been supplied.

Signed-off-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Adam Lackorzynski 2010-11-04 23:22:15 +01:00 committed by Anthony Liguori
parent b538e53ee7
commit 9696846600
1 changed files with 6 additions and 0 deletions
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6
hw/multiboot.c
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@ -171,6 +171,12 @@ int load_multiboot(void *fw_cfg,
uint64_t elf_low, elf_high;
int kernel_size;
fclose(f);
if (((struct elf64_hdr*)header)->e_machine == EM_X86_64) {
fprintf(stderr, "Cannot load x86-64 image, give a 32bit one.\n");
exit(1);
}
kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry,
&elf_low, &elf_high, 0, ELF_MACHINE, 0);
if (kernel_size < 0) {