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9337e3b6e1
Bug description: QEMU currently gets all bits from GET_SUPPORTED_CPUID for CPUID leaf 0xA and passes them directly to the guest. This makes the guest ABI depend on host kernel and host CPU capabilities, and breaks live migration if we migrate between hosts with different capabilities (e.g., different number of PMU counters). Add a "pmu" property to X86CPU, and set it to true only on "-cpu host", or on pc-*-1.5 and older machine-types. For now, setting pmu=on will enable the current passthrough mode that doesn't have any ABI stability guarantees, but in the future we may implement a mode where the PMU CPUID bits are stable and configurable. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de> |
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| .. | ||
| arch_dump.c | ||
| arch_memory_mapping.c | ||
| cc_helper_template.h | ||
| cc_helper.c | ||
| cpu-qom.h | ||
| cpu.c | ||
| cpu.h | ||
| excp_helper.c | ||
| fpu_helper.c | ||
| gdbstub.c | ||
| helper.c | ||
| helper.h | ||
| hyperv.c | ||
| hyperv.h | ||
| int_helper.c | ||
| ioport-user.c | ||
| kvm_i386.h | ||
| kvm-stub.c | ||
| kvm.c | ||
| machine.c | ||
| Makefile.objs | ||
| mem_helper.c | ||
| misc_helper.c | ||
| ops_sse_header.h | ||
| ops_sse.h | ||
| seg_helper.c | ||
| shift_helper_template.h | ||
| smm_helper.c | ||
| svm_helper.c | ||
| svm.h | ||
| TODO | ||
| topology.h | ||
| translate.c | ||