[RFC PATCH 0/2] Add support for a fake, para-virtualised machine

Will Deacon will.deacon at arm.com
Wed Dec 5 10:10:29 EST 2012


On Wed, Dec 05, 2012 at 03:07:05PM +0000, Nicolas Pitre wrote:
> On Wed, 5 Dec 2012, Catalin Marinas wrote:
> > On 4 December 2012 18:14, Will Deacon <will.deacon at arm.com> wrote:
> > > Well, this depends on the guest taking an undefined instruction exception on
> > > the smc, then deciding to issue an hvc instead and *then* having the
> > > hypervisor somehow translate that into a PSCI invocation. It could work, but
> > > it sounds easy to mess up and relies on the PSCI firmware co-existing with
> > > things like kvm.
> > 
> > We can have enable-method DT entries independent of the SoC and one of
> > them can be psci-hvc.
> > 
> > Just for clarification, AArch32 with virtualisation mandates the
> > security extensions, so the SMC can be trapped.
> 
> Good. Therefore this one is settled.

Looks we replied at the same time! Please see my other mail...

Will



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