KVM: Modify guest segments after potentially switching modes
The SET_SREGS ioctl modifies both cr0.pe (real mode/protected mode) and guest segment registers. Since segment handling is modified by the mode on Intel procesors, update the segment registers after the mode switch has taken place. Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Родитель
f6528b03f1
Коммит
024aa1c02f
|
@ -1904,16 +1904,6 @@ static int kvm_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
|
|||
|
||||
vcpu_load(vcpu);
|
||||
|
||||
set_segment(vcpu, &sregs->cs, VCPU_SREG_CS);
|
||||
set_segment(vcpu, &sregs->ds, VCPU_SREG_DS);
|
||||
set_segment(vcpu, &sregs->es, VCPU_SREG_ES);
|
||||
set_segment(vcpu, &sregs->fs, VCPU_SREG_FS);
|
||||
set_segment(vcpu, &sregs->gs, VCPU_SREG_GS);
|
||||
set_segment(vcpu, &sregs->ss, VCPU_SREG_SS);
|
||||
|
||||
set_segment(vcpu, &sregs->tr, VCPU_SREG_TR);
|
||||
set_segment(vcpu, &sregs->ldt, VCPU_SREG_LDTR);
|
||||
|
||||
dt.limit = sregs->idt.limit;
|
||||
dt.base = sregs->idt.base;
|
||||
kvm_arch_ops->set_idt(vcpu, &dt);
|
||||
|
@ -1953,6 +1943,16 @@ static int kvm_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
|
|||
if (vcpu->irq_pending[i])
|
||||
__set_bit(i, &vcpu->irq_summary);
|
||||
|
||||
set_segment(vcpu, &sregs->cs, VCPU_SREG_CS);
|
||||
set_segment(vcpu, &sregs->ds, VCPU_SREG_DS);
|
||||
set_segment(vcpu, &sregs->es, VCPU_SREG_ES);
|
||||
set_segment(vcpu, &sregs->fs, VCPU_SREG_FS);
|
||||
set_segment(vcpu, &sregs->gs, VCPU_SREG_GS);
|
||||
set_segment(vcpu, &sregs->ss, VCPU_SREG_SS);
|
||||
|
||||
set_segment(vcpu, &sregs->tr, VCPU_SREG_TR);
|
||||
set_segment(vcpu, &sregs->ldt, VCPU_SREG_LDTR);
|
||||
|
||||
vcpu_put(vcpu);
|
||||
|
||||
return 0;
|
||||
|
|
Загрузка…
Ссылка в новой задаче