[Qemu-devel] CPU code roadmap (was Re: [PATCH 0/7] x86 CPU patches that didn't get into 1.2)

[Eduardo Habkost]

On Mon, Sep 10, 2012 at 05:17:03PM +0200, Andreas Färber wrote:
> Hi Eduardo,
> 
> Am 05.09.2012 22:41, schrieb Eduardo Habkost:
> > This is a small queue of patches that I consider "ready to go", that didn't
> > enter QEMU 1.2.
> 
> There's so many x86 CPU series on the list again... Am I understanding
> correctly that this is the start, applying directly to master? Or does
> it have further prerequisites?

Correct. This one does not have any prerequisites and used 'master' as
base. But it is a prerequisite for many other series.


> 
> Would be great to get one batch reviewed and applied, so that we can all
> test and review from the same base. ;)

True. At the same time, I wouldn't like to hold from submitting patches
for review because others are still pending.

Let's try to be very clear about dependencies on each series, though, to
avoid confusion (I could have been more explicit and mentioned that this
can be applied directly to master).

I am aware of three "properly ordered" series on the list, by now:

1) This one ("x86 CPU patches that didn't get into 1.2")
2) "unduplicate feature names" series, from myself, explicitly depending
   on (1)
3) "CPU properties" series, from Igor, explicitly depending on (1) and (2)

And I am aware of the following series, that still need to be
rebased/resubmitted:

- "Allow changing of Hypervisor CPUIDs" from Don Slutz
- CPU model classes, from myself
- APIC ID / topology fixes, from myself (previously sent as RFC)
- Make X86CPU child of DeviceState (there are 3 proposals today, and I
  don't know which one will be adopted

Also, I have plans to submit series for the following:

- Call GET_SUPPORTED_CPUID only once and store the results
- General kvm_arch_get_supported_cpuid() refactor/cleanup
- General refactoring of feature flag handling, to use a generic
  "feature words" structure
- Fix -cpu check/enforce to properly use GET_SUPPORTED_CPUID
- Fix -cpu host to properly use GET_SUPPORTED_CPUID
- Addition of feature flag names for CPUID leaf 7

Anything else I am missing?

-- 
Eduardo