Re: [Qemu-devel] [Qemu-ppc] [QEMU-PPC] [RFC 2/3] hw/spapr/spapr_caps: Add new caps safe_[cache/bounds_check/indirect_branch]

[Suraj Jitindar Singh]

On Tue, 2018-01-09 at 09:15 -0200, Murilo Opsfelder Araújo wrote:
> On 01/09/2018 07:21 AM, Suraj Jitindar Singh wrote:
> > This patch adds three new capabilities:
> > cap-cfpc -> safe_cache
> > cap-sbbc -> safe_bounds_check
> > cap-ibs  -> safe_indirect_branch
> 
> Hi, Suraj.
> 
> What about splitting this into smaller patches, one per capability?

Yep

> 
> > Each capability is tristate with the possible values "broken",
> > "workaround" or "fixed". Add generic getter and setter functions
> > for
> > this new capability type. Add these new capabilities to the
> > capabilities
> > list. The maximum value for the capabilities is queried from kvm
> > through
> > new kvm capabilities. The requested values are considered to be
> > compatible if kvm can support an equal or higher value for each
> > capability.
> > 
> > Discussion:
> > Currently these new capabilities default to broken to allow for
> > backwards compatibility, is this the best option?
> 
> This could be placed in the cover letter, not in the commit 

Only here because this is an RFC

> 
> Cheers
> Murilo
>