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To: "Suresh E. Warrier" <warrier@linux.vnet.ibm.com>, kvm@vger.kernel.org,
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From: Michael Ellerman <mpe@ellerman.id.au>
Cc: warrier@linux.vnet.ibm.com, paulus@samba.org, agraf@suse.de
Subject: Re: [v2,2/9] powerpc/smp: Add smp_muxed_ipi_set_message
Message-Id: <20151207063522.D22A3140319@ozlabs.org>
Date: Mon,  7 Dec 2015 17:35:22 +1100 (AEDT)
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On Wed, 2015-25-11 at 23:44:49 UTC, "Suresh E. Warrier" wrote:
> smp_muxed_ipi_message_pass() invokes smp_ops->cause_ipi, which
> updates the MFFR through an ioremapped address, to cause the
> IPI. Because of this real mode callers cannot call
> smp_muxed_ipi_message_pass() for IPI messaging.

You're talking about the XICS code here but you don't mention that. Please
expand it to make it clear that you're talking about XICS.

cheers