Re: [PATCH v4 00/18] KVM: arm64: Confine protected VM vCPU state to EL2

[Marc Zyngier <maz@kernel.org>]

On Sat, 03 Oct 2026 07:57:13 +0100,
Fuad Tabba <fuad.tabba@linux.dev> wrote:
> 
> Hi Marc,
> 
> On Fri, 02 Oct 2026 16:55:26 +0100, Marc Zyngier <maz@kernel.org> wrote:
> 
> [...]
> 
> > Given how busy this merge window is, there were plenty of conflicts, most
> > of them with your own patches. Please have a look at the way I resolved
> > them and let me know if anything is on the bogus side of wrong...
> 
> Thanks for taking these, and for sorting out the conflicts. Most of the
> resolution matches mine, but two things in the pkvm-state merge are off:
> 
> - In __kvm_vcpu_run(), the !host_vcpu and SVCR bail-outs still return
>   -EINVAL. Patch 10 changed them to ARM_EXCEPTION_IL, since the host
>   reads bit 31 of -EINVAL as a pending SError.
> 
> - In __kvm_adjust_pc(), the pin path uses kern_hyp_va() on the __kern
>   pointer, which sparse flags. It needs kern_hyp_va_host().
> 
> The diff below fixes both. It also drops the set_bit()s in
> pkvm_init_features_from_host() that kvm_pkvm_vcpu_allowed_features()
> already does, and realigns the esr_dabt_is_cm() line. Could you fold it
> into the merge resolution?
> 
> With it applied on next, I booted protected and non-protected guests,
> ran CPU hotplug in both, and ran the pKVM selftest (from my tree), all
> passing.

Thanks for having a look at it. I've now applied the new resolution
and pushed out the updated branch,

Cheers,

	M.

-- 
Without deviation from the norm, progress is not possible.