diff options
| author | Gleb Natapov <gleb@redhat.com> | 2010-03-19 15:47:32 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-04-26 07:41:20 -0700 |
| commit | f6eb212e6056e62841e347e141285aed8920a731 (patch) | |
| tree | 995e502a73332429e9a8af39edb6485d936d165b /arch/x86/kvm/x86.c | |
| parent | 2f4415466842f786b38bd28dcaf7c85b2f7a9c8f (diff) | |
KVM: x86 emulator: Check IOPL level during io instruction emulation
commit f850e2e603bf5a05b0aee7901857cf85715aa694 upstream
Make emulator check that vcpu is allowed to execute IN, INS, OUT,
OUTS, CLI, STI.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 3c2e9b7b423f..62c4af83ff61 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3079,6 +3079,8 @@ int kvm_emulate_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, { 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; @@ -3090,9 +3092,6 @@ int kvm_emulate_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, vcpu->arch.pio.down = 0; vcpu->arch.pio.rep = 0; - trace_kvm_pio(vcpu->run->io.direction == KVM_EXIT_IO_OUT, port, - size, 1); - val = kvm_register_read(vcpu, VCPU_REGS_RAX); memcpy(vcpu->arch.pio_data, &val, 4); @@ -3111,6 +3110,8 @@ int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, 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; @@ -3122,9 +3123,6 @@ int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, 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; |