[Qemu-devel] [PATCH v2 0/6] Add runnability info to query-cpu-definitions

[Eduardo Habkost <ehabkost@redhat.com>]

This series extends query-cpu-definitions to include an extra
field: "unavailable-features". The new field can be used to find
out reasons that prevent the CPU model from running in the
current host.

This will return information based on the current machine and
accelerator only. In the future we may extend these mechanisms to
allow querying other machines and other accelerators without
restarting QEMU, but it will require some reorganization of
QEMU's main code.

This series is based on my 'x86-next' branch, at:
  git://github.com/ehabkost/qemu.git x86-next

Changes v1 -> v2:
* Fixed documentation to say "(since 2.7)"
* Removed @runnable field, improved documentation

Example command output:

  { "return": [
      {
        "unavailable-features": [ "kvm" ],
         "name": "host"
      },
      {
        "unavailable-features": [],
        "name": "qemu64"
      },
      {
        "unavailable-features": [],
        "name": "qemu32"
      },
      {
        "unavailable-features": ["npt", "fxsr-opt", "vme"],
        "name": "phenom"
      },
      {
        "unavailable-features": ["vme"],
        "name": "pentium3"
      },
      {
        "unavailable-features": ["vme"],
        "name": "pentium2"
      },
      {
        "unavailable-features": ["vme"],
        "name": "pentium"
      },
      {
        "unavailable-features": ["vme"],
        "name": "n270"
      },
      {
        "unavailable-features": ["vme"],
        "name": "kvm64"
      },
      {
        "unavailable-features": ["vme"],
        "name": "kvm32"
      },
      {
        "unavailable-features": ["vme"],
        "name": "coreduo"
      },
      {
        "unavailable-features": ["vme"],
        "name": "core2duo"
      },
      {
        "unavailable-features": ["vme"],
        "name": "athlon"
      },
      {
        "unavailable-features": ["vme"],
        "name": "Westmere"
      },
      {
        "unavailable-features": ["xsavec", "3dnowprefetch", "rdseed", "rtm", "invpcid", "erms", "avx2", "hle", "rdrand", "f16c", "avx", "tsc-deadline", "x2apic", "pcid", "fma", "vme"],
        "name": "Skylake-Client"
      },
      {
        "unavailable-features": ["avx", "tsc-deadline", "x2apic", "vme"],
        "name": "SandyBridge"
      },
      {
        "unavailable-features": ["vme"],
        "name": "Penryn"
      },
      {
        "unavailable-features": ["tbm", "fma4", "xop", "3dnowprefetch", "misalignsse", "f16c", "avx", "fma", "vme"],
        "name": "Opteron_G5"
      },
      {
        "unavailable-features": ["fma4", "xop", "3dnowprefetch", "misalignsse", "avx", "vme"],
        "name": "Opteron_G4"
      },
      {
        "unavailable-features": ["misalignsse", "vme"],
        "name": "Opteron_G3"
      },
      {
        "unavailable-features": ["vme"],
        "name": "Opteron_G2"
      },
      {
        "unavailable-features": ["vme"],
        "name": "Opteron_G1"
      },
      {
        "unavailable-features": ["vme"],
        "name": "Nehalem"
      },
      {
        "unavailable-features": ["erms", "rdrand", "f16c", "avx", "tsc-deadline", "x2apic", "vme"],
        "name": "IvyBridge"
      },
      {
        "unavailable-features": ["rtm", "invpcid", "erms", "avx2", "hle", "rdrand", "f16c", "avx", "tsc-deadline", "x2apic", "pcid", "fma", "vme"],
        "name": "Haswell"
      },
      {
        "unavailable-features": ["invpcid", "erms", "avx2", "rdrand", "f16c", "avx", "tsc-deadline", "x2apic", "pcid", "fma", "vme"],
        "name": "Haswell-noTSX"
      },
      {
        "unavailable-features": ["vme"],
        "name": "Conroe"
      },
      {
        "unavailable-features": ["3dnowprefetch", "rdseed", "rtm", "invpcid", "erms", "avx2", "hle", "rdrand", "f16c", "avx", "tsc-deadline", "x2apic", "pcid", "fma", "vme"],
        "name": "Broadwell"
      },
      {
        "unavailable-features": ["3dnowprefetch", "rdseed", "invpcid", "erms", "avx2", "rdrand", "f16c", "avx", "tsc-deadline", "x2apic", "pcid", "fma", "vme"],
        "name": "Broadwell-noTSX"
      },
      {
        "unavailable-features": ["vme"],
        "name": "486"
      }
  ]}

Cc: David Hildenbrand <dahi@linux.vnet.ibm.com>
Cc: Michael Mueller <mimu@linux.vnet.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Jiri Denemark <jdenemar@redhat.com>
Cc: libvir-list@redhat.com

Eduardo Habkost (6):
  target-i386: List CPU models using subclass list
  target-i386: Move warning code outside x86_cpu_filter_features()
  target-i386: Define CPUID filtering functions before x86_cpu_list()
  qmp: Add runnability information to query-cpu-definitions
  target-i386: Use "-" instead of "_" on all feature names
  target-i386: Return runnability information on query-cpu-definitions

 qapi-schema.json      |  23 ++++-
 target-i386/cpu-qom.h |   4 +
 target-i386/cpu.c     | 262 +++++++++++++++++++++++++++++++++++---------------
 3 files changed, 209 insertions(+), 80 deletions(-)

-- 
2.5.5