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KVM: x86 emulator: Check IOPL level during io instruction emulation
[safe/jmp/linux-2.6]
/
arch
/
x86
/
kvm
/
x86.c
diff --git
a/arch/x86/kvm/x86.c
b/arch/x86/kvm/x86.c
index
ea3a8af
..
86b739f
100644
(file)
--- a/
arch/x86/kvm/x86.c
+++ b/
arch/x86/kvm/x86.c
@@
-3599,6
+3599,8
@@
int kvm_emulate_pio(struct kvm_vcpu *vcpu, int in, int size, unsigned port)
{
unsigned long val;
{
unsigned long val;
+ trace_kvm_pio(!in, port, size, 1);
+
vcpu->run->exit_reason = KVM_EXIT_IO;
vcpu->run->io.direction = in ? KVM_EXIT_IO_IN : KVM_EXIT_IO_OUT;
vcpu->run->io.size = vcpu->arch.pio.size = size;
vcpu->run->exit_reason = KVM_EXIT_IO;
vcpu->run->io.direction = in ? KVM_EXIT_IO_IN : KVM_EXIT_IO_OUT;
vcpu->run->io.size = vcpu->arch.pio.size = size;
@@
-3610,9
+3612,6
@@
int kvm_emulate_pio(struct kvm_vcpu *vcpu, int in, int size, unsigned port)
vcpu->arch.pio.down = 0;
vcpu->arch.pio.rep = 0;
vcpu->arch.pio.down = 0;
vcpu->arch.pio.rep = 0;
- trace_kvm_pio(vcpu->run->io.direction == KVM_EXIT_IO_OUT, port,
- size, 1);
-
if (!vcpu->arch.pio.in) {
val = kvm_register_read(vcpu, VCPU_REGS_RAX);
memcpy(vcpu->arch.pio_data, &val, 4);
if (!vcpu->arch.pio.in) {
val = kvm_register_read(vcpu, VCPU_REGS_RAX);
memcpy(vcpu->arch.pio_data, &val, 4);
@@
-3633,6
+3632,8
@@
int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, int in,
unsigned now, in_page;
int ret = 0;
unsigned now, in_page;
int ret = 0;
+ trace_kvm_pio(!in, port, size, count);
+
vcpu->run->exit_reason = KVM_EXIT_IO;
vcpu->run->io.direction = in ? KVM_EXIT_IO_IN : KVM_EXIT_IO_OUT;
vcpu->run->io.size = vcpu->arch.pio.size = size;
vcpu->run->exit_reason = KVM_EXIT_IO;
vcpu->run->io.direction = in ? KVM_EXIT_IO_IN : KVM_EXIT_IO_OUT;
vcpu->run->io.size = vcpu->arch.pio.size = size;
@@
-3644,9
+3645,6
@@
int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, int in,
vcpu->arch.pio.down = down;
vcpu->arch.pio.rep = rep;
vcpu->arch.pio.down = down;
vcpu->arch.pio.rep = rep;
- trace_kvm_pio(vcpu->run->io.direction == KVM_EXIT_IO_OUT, port,
- size, count);
-
if (!count) {
kvm_x86_ops->skip_emulated_instruction(vcpu);
return 1;
if (!count) {
kvm_x86_ops->skip_emulated_instruction(vcpu);
return 1;