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| author | Wanpeng Li <wanpengli@tencent.com> | 2018-04-04 02:28:48 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-04-04 20:03:58 +0300 |
| commit | 082d06edab49f302eb96b7a9d029f52713156354 (patch) | |
| tree | 18f6005208f65fbfa2a13f52ae47aeb18ee3bd77 /arch/x86/kvm/x86.c | |
| parent | 4fde8d57cfa8236818459adfc4f8bd7d353c153e (diff) | |
| download | linux-082d06edab49f302eb96b7a9d029f52713156354.tar.xz | |
KVM: X86: Introduce handle_ud()
Introduce handle_ud() to handle invalid opcode, this function will be
used by later patches.
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Liran Alon <liran.alon@oracle.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim KrÄmář <rkrcmar@redhat.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 7d9a444f2f24..1eb495e04fd3 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4840,6 +4840,19 @@ out: } EXPORT_SYMBOL_GPL(kvm_write_guest_virt_system); +int handle_ud(struct kvm_vcpu *vcpu) +{ + enum emulation_result er; + + er = emulate_instruction(vcpu, EMULTYPE_TRAP_UD); + if (er == EMULATE_USER_EXIT) + return 0; + if (er != EMULATE_DONE) + kvm_queue_exception(vcpu, UD_VECTOR); + return 1; +} +EXPORT_SYMBOL_GPL(handle_ud); + static int vcpu_is_mmio_gpa(struct kvm_vcpu *vcpu, unsigned long gva, gpa_t gpa, bool write) { |