Created
June 22, 2016 02:41
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KVM Migration Patch for S2E
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/* linux-lts-saucy-3.11.0/arch/x86/kvm/vmx.c */ | |
static int handle_exception(struct kvm_vcpu *vcpu) | |
{ | |
... | |
enum emulation_result er; | |
struct x86_emulate_ctxt *ctxt; | |
... | |
if (is_invalid_opcode(intr_info)) { | |
er = emulate_instruction(vcpu, EMULTYPE_TRAP_UD); | |
#if 1 | |
ctxt = &vcpu->arch.emulate_ctxt; | |
printk(KERN_WARNING "\nctxt->eip = 0x%lx\nctxt->_eip = 0x%lx\nctxt->fetch.start = 0x%lx\nctxt->fetch.end = 0x%lx\n", ctxt->eip, ctxt->_eip, ctxt->fetch.start, ctxt->fetch.end); | |
printk(KERN_WARNING "ctxt->fetch.data[]: 0x%01x 0x%01x\n", ctxt->fetch.data[0], ctxt->fetch.data[1]); | |
if ((ctxt->fetch.data[0] == 0x0f) && (ctxt->fetch.data[1] == 0x3f)) | |
{ | |
printk(KERN_WARNING "S2E instruction seen!\n"); | |
/* Initiate live migration */ | |
vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR; | |
vcpu->run->internal.suberror = 5; /*temporary error code*/ | |
vcpu->run->internal.ndata = 1; | |
vcpu->run->internal.data[0] = ctxt->eip; | |
return 0; | |
} | |
#endif | |
if (er != EMULATE_DONE) | |
kvm_queue_exception(vcpu, UD_VECTOR); | |
return 1; | |
} |
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