diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2012-11-29 18:11:50 +0100 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2012-11-30 08:27:47 -0600 |
| commit | c6e052f0809b56a657b2afcd728e07ffddb28f06 (patch) | |
| tree | 9264399c00d2c4e3fe79b1b60f5af98a1f7a7720 /pc-bios/optionrom | |
| parent | fe512d65e0b752dfa7af6cfb374a0820d35040d0 (diff) | |
multiboot: fix e801 memory map
The e801 memory sizes in the multiboot structures hard-code the available
low memory to 640. However, the value should not include the size of the
EBDA. Fill the value in the option ROM, getting the size of low memory
from the BIOS.
Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'pc-bios/optionrom')
| -rw-r--r-- | pc-bios/optionrom/multiboot.S | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/pc-bios/optionrom/multiboot.S b/pc-bios/optionrom/multiboot.S index f08222a3c6..003bcfb49f 100644 --- a/pc-bios/optionrom/multiboot.S +++ b/pc-bios/optionrom/multiboot.S @@ -75,6 +75,13 @@ run_multiboot: shr $4, %eax mov %ax, %fs + /* Account for the EBDA in the multiboot structure's e801 + * map. + */ + int $0x12 + cwtl + movl %eax, %fs:4 + /* ES = mmap_addr */ mov %fs:48, %eax shr $4, %eax |