From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wanpeng Li Subject: [PATCH v3 1/2] KVM: X86: Introduce handle_ud() Date: Tue, 27 Mar 2018 17:48:53 -0700 Message-ID: <1522198134-2709-2-git-send-email-wanpengli@tencent.com> References: <1522198134-2709-1-git-send-email-wanpengli@tencent.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Paolo Bonzini , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Andrew Cooper , Konrad Rzeszutek Wilk , Liran Alon To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Return-path: In-Reply-To: <1522198134-2709-1-git-send-email-wanpengli@tencent.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org From: Wanpeng Li Introduce handle_ud() to handle invalid opcode, this function will be used by later patches. Reviewed-by: Konrad Rzeszutek Wilk Reviewed-by: Liran Alon Cc: Paolo Bonzini Cc: Radim Krčmář Cc: Andrew Cooper Cc: Konrad Rzeszutek Wilk Cc: Liran Alon Signed-off-by: Wanpeng Li --- arch/x86/kvm/svm.c | 9 +-------- arch/x86/kvm/vmx.c | 10 ++-------- arch/x86/kvm/x86.c | 13 +++++++++++++ arch/x86/kvm/x86.h | 2 ++ 4 files changed, 18 insertions(+), 16 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index cb46e98..65eb3b9 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -2581,14 +2581,7 @@ static int bp_interception(struct vcpu_svm *svm) static int ud_interception(struct vcpu_svm *svm) { - int er; - - er = emulate_instruction(&svm->vcpu, EMULTYPE_TRAP_UD); - if (er == EMULATE_USER_EXIT) - return 0; - if (er != EMULATE_DONE) - kvm_queue_exception(&svm->vcpu, UD_VECTOR); - return 1; + return handle_ud(&svm->vcpu); } static int ac_interception(struct vcpu_svm *svm) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 9bc05f5..63b46db 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -6233,14 +6233,8 @@ static int handle_exception(struct kvm_vcpu *vcpu) if (is_nmi(intr_info)) return 1; /* already handled by vmx_vcpu_run() */ - if (is_invalid_opcode(intr_info)) { - 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; - } + if (is_invalid_opcode(intr_info)) + return handle_ud(vcpu); error_code = 0; if (intr_info & INTR_INFO_DELIVER_CODE_MASK) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 1583bdc..e3a60ab 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4840,6 +4840,19 @@ int kvm_write_guest_virt_system(struct x86_emulate_ctxt *ctxt, } 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) { diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h index b620cfa..b2f6191 100644 --- a/arch/x86/kvm/x86.h +++ b/arch/x86/kvm/x86.h @@ -219,6 +219,8 @@ int kvm_write_guest_virt_system(struct x86_emulate_ctxt *ctxt, gva_t addr, void *val, unsigned int bytes, struct x86_exception *exception); +int handle_ud(struct kvm_vcpu *vcpu); + void kvm_vcpu_mtrr_init(struct kvm_vcpu *vcpu); u8 kvm_mtrr_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn); bool kvm_mtrr_valid(struct kvm_vcpu *vcpu, u32 msr, u64 data); -- 2.7.4