[Qemu-devel] [PATCH v6 00/16] Allow changing of Hypervisor CPUIDs.

[Don Slutz <Don@CloudSwitch.com>]

Also known as Paravirtualization CPUIDs.

This is primarily done so that the guest will think it is running
under vmware when hypervisor-vendor=vmware is specified as a
property of a cpu.


This depends on:

http://lists.gnu.org/archive/html/qemu-devel/2012-09/msg01400.html

As far as I know it is #4. It depends on (1) and (2) and (3).

This change is based on:

Microsoft Hypervisor CPUID Leaves:
  http://msdn.microsoft.com/en-us/library/windows/hardware/ff542428%28v=vs.85%29.aspx

Linux kernel change starts with:
  http://fixunix.com/kernel/538707-use-cpuid-communicate-hypervisor.html
Also:
  http://lkml.indiana.edu/hypermail/linux/kernel/1205.0/00100.html

VMware documention on CPUIDs (Mechanisms to determine if software is
running in a VMware virtual machine):
  http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1009458

Changes from v5 to v6:
  Split out 01/17: target-i386: Allow tsc-frequency to be larger then 2.147G
    It has been accepted as a trivial patch:
    http://lists.gnu.org/archive/html/qemu-devel/2012-09/msg03959.html
Blue Swirl:
  Fix 2 checkpatch.pl "WARNING: line over 80 characters".

Changes from v4 to v5:
  Undo kvm_clock2 change.
  Add cpuid_hv_level_set; cpuid_hv_level == 0 is now valid.
  Add cpuid_hv_vendor_set; the null string is now valid.
  Handle kvm and cpuid_hv_level == 0.
  hypervisor-vendor=kvm,hypervisor-level=0 and hypervisor-level=0,hypervisor-vendor=kvm
    now do the same thing.

Changes from v3 to v4:
  Added CPUID_HV_LEVEL_HYPERV, CPUID_HV_LEVEL_KVM.
  Added CPUID_HV_VENDOR_HYPERV.
  Added hyperv as known hypservisor-vendor.
  Allow hypervisor-level to be 0.

Changes from v2 to v3:
  Clean post to qemu-devel.

Changes from v1 to v2:

1) Added 1/4 from http://lists.gnu.org/archive/html/qemu-devel/2012-08/msg05153.html

   Because Fred is changing jobs and so will not be pushing to get
   this in. It needed to be rebased, And I needed it to complete the
   testing of this change.

2) Added 2/4 because of the re-work I needed a way to clear all KVM bits,

3) The rework of v1.  Make it fit into the object model re-work of cpu.c for x86.

4) Added 3/4 -- The split out of the code that is not needed for accel=kvm.

Changes from v2 to v3:

Marcelo Tosatti:
  Its one big patch, better split in logically correlated patches
  (with better changelog). This would help reviewers.

So split 3 and 4 into 3 to 17.  More info in change log.
No code change.

Don Slutz (16):
  target-i386: Add missing kvm bits.
  target-i386: Add Hypervisor level.
  target-i386: Add cpu object access routines for Hypervisor level.
  target-i386: Add x86_set_hyperv.
  target-i386: Use Hypervisor level in -machine pc,accel=kvm.
  target-i386: Use Hypervisor level in -machine pc,accel=tcg.
  target-i386: Add Hypervisor vendor.
  target-i386: Add cpu object access routines for Hypervisor vendor.
  target-i386: Use Hypervisor vendor in -machine pc,accel=kvm.
  target-i386: Use Hypervisor vendor in -machine pc,accel=tcg.
  target-i386: Add some known names to Hypervisor vendor.
  target-i386: Add optional Hypervisor leaf extra.
  target-i386: Add cpu object access routines for Hypervisor leaf
    extra.
  target-i386: Add setting of Hypervisor leaf extra for known vmare4.
  target-i386: Use Hypervisor leaf extra in -machine pc,accel=kvm.
  target-i386: Use Hypervisor leaf extra in -machine pc,accel=tcg.

 target-i386/cpu.c |  285 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 target-i386/cpu.h |   34 +++++++
 target-i386/kvm.c |   33 +++++-
 3 files changed, 342 insertions(+), 10 deletions(-)