From: Scott Wood <scottwood@freescale.com>
To: Alexander Graf <agraf@suse.de>
Cc: <kvm-ppc@vger.kernel.org>, KVM list <kvm@vger.kernel.org>
Subject: Re: [PATCH 2/4] KVM: PPC: BookE: Emulate mfspr on EPR
Date: Fri, 4 Jan 2013 13:50:19 -0600 [thread overview]
Message-ID: <1357329019.666.14@snotra> (raw)
In-Reply-To: <1357321000-31008-3-git-send-email-agraf@suse.de> (from agraf@suse.de on Fri Jan 4 11:36:38 2013)
On 01/04/2013 11:36:38 AM, Alexander Graf wrote:
> The EPR register is potentially valid for PR KVM as well, so we need
> to emulate accesses to it. It's only defined for reading, so only
> handle the mfspr case.
>
> Signed-off-by: Alexander Graf <agraf@suse.de>
> ---
> arch/powerpc/kvm/booke_emulate.c | 3 +++
> 1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/arch/powerpc/kvm/booke_emulate.c
> b/arch/powerpc/kvm/booke_emulate.c
> index 4685b8c..27a4b28 100644
> --- a/arch/powerpc/kvm/booke_emulate.c
> +++ b/arch/powerpc/kvm/booke_emulate.c
> @@ -269,6 +269,9 @@ int kvmppc_booke_emulate_mfspr(struct kvm_vcpu
> *vcpu, int sprn, ulong *spr_val)
> case SPRN_ESR:
> *spr_val = vcpu->arch.shared->esr;
> break;
> + case SPRN_EPR:
> + *spr_val = vcpu->arch.epr;
> + break;
It's not just potentially valid -- in our internal tree we do paravirt
EPR on e500v2 even though the hardware doesn't implement it.
-Scott
next prev parent reply other threads:[~2013-01-04 19:50 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-04 17:36 [PATCH 0/4] KVM: PPC: BookE: Add EPR user space support Alexander Graf
2013-01-04 17:36 ` [PATCH 1/4] KVM: PPC: BookE: Allow irq deliveries to inject requests Alexander Graf
2013-01-04 19:40 ` Scott Wood
2013-01-04 23:02 ` Alexander Graf
2013-01-04 17:36 ` [PATCH 2/4] KVM: PPC: BookE: Emulate mfspr on EPR Alexander Graf
2013-01-04 19:50 ` Scott Wood [this message]
2013-01-04 23:11 ` Alexander Graf
2013-01-04 17:36 ` [PATCH 3/4] KVM: PPC: BookE: Implement EPR exit Alexander Graf
2013-01-04 20:19 ` Scott Wood
2013-01-04 17:36 ` [PATCH 4/4] KVM: PPC: BookE: Add EPR ONE_REG sync Alexander Graf
2013-01-04 20:08 ` Scott Wood
2013-01-04 22:55 ` Alexander Graf
2013-01-04 23:03 ` Scott Wood
2013-01-04 23:06 ` Alexander Graf
-- strict thread matches above, loose matches on Subject: below --
2013-01-04 23:41 [PATCH 0/4] KVM: PPC: BookE: Add EPR user space support v2 Alexander Graf
2013-01-04 23:41 ` [PATCH 2/4] KVM: PPC: BookE: Emulate mfspr on EPR Alexander Graf
2013-01-07 19:38 [PATCH 0/4] KVM: PPC: BookE: Add EPR user space support v3 Alexander Graf
2013-01-07 19:38 ` [PATCH 2/4] KVM: PPC: BookE: Emulate mfspr on EPR Alexander Graf
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