Hi, I am working on project implementing multiprocessor Record-Replay using KVM-Qemu. Host CPU : cat /proc/cpuinfo model name : Intel(R) Xeon(R) CPU X5650 @ 2.67GHz stepping : 2 cpu MHz : 2660.013 cache size : 12288 KB flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt aes lahf_lm ida arat epb dts tpr_shadow vnmi flexpriority ept vpid address sizes : 40 bits physical, 48 bits virtual My kvm version is QEMU emulator version 0.14.0 (qemu-kvm-0.14.0), Copyright (c) 2003-2008 Fabrice Bellard The host kernel version : 2.6.36.4 Running gentoo as Guest. We can set the guest to VMEXIT by setting the CPU_BASED_MONITOR_TRAP_FLAG. This will cause the guest to single step on every instruction. But I want to make the guest do a VMEXIT only on branch instruction, On a stand alone system we can do this by setting both the TRAP FLAG (TF ) of eflags register and BRANCH_TRAP_FLAG (BTF) on IA32_DEBUGCTL msr register, but there are no such controls in the VMCS. How can I do this ? Is there any workaround? Ex using the reserved bit area of VMCS Thanks, Sharan -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
