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Date: Wed, 31 Mar 2021 15:28:01 +1100
From: Paul Mackerras <paulus@ozlabs.org>
To: Nicholas Piggin <npiggin@gmail.com>
Subject: Re: [PATCH v4 03/46] KVM: PPC: Book3S HV: Disallow LPCR[AIL] to be
 set to 1 or 2
Message-ID: <YGP6Ucf8d7c4wZbo@thinks.paulus.ozlabs.org>
References: <20210323010305.1045293-1-npiggin@gmail.com>
 <20210323010305.1045293-4-npiggin@gmail.com>
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Cc: linuxppc-dev@lists.ozlabs.org, kvm-ppc@vger.kernel.org,
 Fabiano Rosas <farosas@linux.ibm.com>
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 <linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org>

On Tue, Mar 23, 2021 at 11:02:22AM +1000, Nicholas Piggin wrote:
> These are already disallowed by H_SET_MODE from the guest, also disallow
> these by updating LPCR directly.
> 
> AIL modes can affect the host interrupt behaviour while the guest LPCR
> value is set, so filter it here too.
> 
> Suggested-by: Fabiano Rosas <farosas@linux.ibm.com>
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

Acked-by: Paul Mackerras <paulus@ozlabs.org>