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KVM: x86 emulator: Check IOPL level during io instruction emulation

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Make emulator check that vcpu is allowed to execute IN, INS, OUT,
OUTS, CLI, STI.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Gleb Natapov
2010-02-10 14:21:33 +02:00
committed by Marcelo Tosatti
parent 1871c6020d
commit f850e2e603
3 changed files with 87 additions and 13 deletions
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arch/x86/include/asm/kvm_host.h
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@ -678,6 +678,7 @@ void kvm_disable_tdp(void);
int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
int complete_pio(struct kvm_vcpu *vcpu);
bool kvm_check_iopl(struct kvm_vcpu *vcpu);
struct kvm_memory_slot *gfn_to_memslot_unaliased(struct kvm *kvm, gfn_t gfn);