linux-kernel - Re: [PATCH 4/4] arm64: dts: uniphier: Add NX1 SoC and boards support

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Message-Id: <43a50889-5229-463b-bf3b-349a48c21d94@app.fastmail.com>
Date:   Thu, 27 Oct 2022 14:19:27 +0200
From:   "Arnd Bergmann" <arnd@...db.de>
To:     "Kunihiko Hayashi" <hayashi.kunihiko@...ionext.com>,
        "Rob Herring" <robh+dt@...nel.org>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
        "Olof Johansson" <olof@...om.net>,
        "Masami Hiramatsu" <mhiramat@...nel.org>
Cc:     soc@...nel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] arm64: dts: uniphier: Add NX1 SoC and boards support

On Thu, Oct 27, 2022, at 13:58, Kunihiko Hayashi wrote:
> On 2022/10/27 20:28, Arnd Bergmann wrote:
>> Using the GIC is preferred here, because otherwise you lose
>> all the benefits that MSIs offer, regarding latency and CPU
>> affinity.
>
> I understand, however, unfortunately GIC-ITS (or something alternative)
> isn't supported in this SoC, so I think it is difficult to use the GIC
> itself as msi-parent.

Ok, got it.

     arnd