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

Don Slutz
2012-09-24T14:32:26Z

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(-)