| commit | 67e1c2b13352914ebc06e4e8b14c0fee1e91011a | |
| author | Glauber Costa <glommer@redhat.com> | |
| Mon, 1 Dec 2008 20:01:32 +0000 (1 15:01 -0500) | ||
| committer | Avi Kivity <avi@redhat.com> | |
| Tue, 2 Dec 2008 12:13:15 +0000 (2 14:13 +0200) | ||
| tree | fdc6952977bf3a4ccb499aa4ee0e697dc9c1be17 | treesnapshot (tar.gz zip) |
| parent | c6ebc75f734613b6af2c45526fb61d723355fa7c | commitdiff |
kvm: extboot: properly set int 0x13 return value
Callers of int 0x13 usually rely on the carry flag being
clear/set to indicate the status of the interrupt execution.
However, our current code clear or set the flags register,
which is totally useless. Whichever value it has, will
be overwritten by the flags value _before_ the interrupt, due to
the iret instruction.
This fixes a bug that prevents slackware (and possibly win2k, untested)
to boot.
Signed-off-by: Glauber Costa <glommer@redhat.com>
Acked-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Callers of int 0x13 usually rely on the carry flag being
clear/set to indicate the status of the interrupt execution.
However, our current code clear or set the flags register,
which is totally useless. Whichever value it has, will
be overwritten by the flags value _before_ the interrupt, due to
the iret instruction.
This fixes a bug that prevents slackware (and possibly win2k, untested)
to boot.
Signed-off-by: Glauber Costa <glommer@redhat.com>
Acked-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
| kvm/extboot/extboot.S | diffblobblamehistory |