-
Anthony Liguori authored
According to 16.2.5 in the SDM, eflags.vm in the tss is consulted before loading and new segments. If eflags.vm == 1, then the segments are treated as 16-bit segments. The LDTR and TR are not normally available in vm86 mode so if they happen to somehow get loaded, they need to be treated as 32-bit segments. This fixes an invalid vmentry failure in a custom OS that was happening after a task switch into vm8086 mode. Since the segments were being mistakenly treated as 32-bit, we loaded garbage state. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
c0c7c04b