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Wed, 18 Sep 2019 02:58:18 -0700 (PDT) Received: from [10.1.197.61] (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 878863F59C; Wed, 18 Sep 2019 02:58:17 -0700 (PDT) Subject: Re: [Question-GIC-v4.1] Plan on GIC-v4.1 driver development From: Marc Zyngier To: Shaokun Zhang , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu References: <40d7276c-54a3-0cca-a207-217459850c21@hisilicon.com> <0501c049-67a6-9a63-e0d9-e043573e1211@kernel.org> Openpgp: preference=signencrypt Autocrypt: addr=maz@kernel.org; prefer-encrypt=mutual; keydata= mQINBE6Jf0UBEADLCxpix34Ch3kQKA9SNlVQroj9aHAEzzl0+V8jrvT9a9GkK+FjBOIQz4KE g+3p+lqgJH4NfwPm9H5I5e3wa+Scz9wAqWLTT772Rqb6hf6kx0kKd0P2jGv79qXSmwru28vJ t9NNsmIhEYwS5eTfCbsZZDCnR31J6qxozsDHpCGLHlYym/VbC199Uq/pN5gH+5JHZyhyZiNW ozUCjMqC4eNW42nYVKZQfbj/k4W9xFfudFaFEhAf/Vb1r6F05eBP1uopuzNkAN7vqS8XcgQH qXI357YC4ToCbmqLue4HK9+2mtf7MTdHZYGZ939OfTlOGuxFW+bhtPQzsHiW7eNe0ew0+LaL 3wdNzT5abPBscqXWVGsZWCAzBmrZato+Pd2bSCDPLInZV0j+rjt7MWiSxEAEowue3IcZA++7 ifTDIscQdpeKT8hcL+9eHLgoSDH62SlubO/y8bB1hV8JjLW/jQpLnae0oz25h39ij4ijcp8N t5slf5DNRi1NLz5+iaaLg4gaM3ywVK2VEKdBTg+JTg3dfrb3DH7ctTQquyKun9IVY8AsxMc6 lxl4HxrpLX7HgF10685GG5fFla7R1RUnW5svgQhz6YVU33yJjk5lIIrrxKI/wLlhn066mtu1 DoD9TEAjwOmpa6ofV6rHeBPehUwMZEsLqlKfLsl0PpsJwov8TQARAQABtB1NYXJjIFp5bmdp ZXIgPG1hekBrZXJuZWwub3JnPokCUQQTAQoAOwIbAwULCQgHAgYVCgkICwIEFgIDAQIeAQIX gBYhBJ/VHFPgtWMY/ZWcPSPQ0LrRPXpDBQJdHcKPAhkBAAoJECPQ0LrRPXpDOHcP/06Yh7n1 hIylY21WGwF4FzkurwwuWKGvU6DdcOPTf8xuSrmxBblMCP8PdBNeDbNm5yzpnt6mO4qnMuO1 KyrDQLn3vyc3KnjqjiJkNLBYTi34zaVgD9RHsHjWA6kcVkeqhY3yr+4Ax+Y96+ZABCt5/4ur cNxkNuyDrPyrFPa8PN1RHcCvO8ywRtz3qf8aLwuoK/jg3yKsGIyBbJz5D/Cm+CpReGSdJwRm oIsGCj0QIALC0ZEtH6GjPKIf2FFG62Tz6HNWrr4foJj7rRTZSpIYU2pflwudYMApALeF/jPi 05wBBny+FwmGKV25Wgz8XFvGAt/v5if9fHxy8qpobR3IbSyrwmJrl5jnND+/zt/q8/BmjYHX 1EyFqlO0Z4KokxkHCczg3J15WJmn9T7n5tBNxQ7/7CJ18WGCIuPSwLtffq0uYv9/b5JyMe/l RE81Gpi5MabCmi0PdfCsxxLpXXtSFGIOLPyMRBGFPCGcrKJIoN47U7Yo8rw01YCtkNtyVW4a +mQg/xSPsNOO3I6qwPB/+vEpHnFoeeEa2jb+xW/SI9PuGVS3b4D8h4+iv7MOZngUYXqOaP3m mCMGWwMkDTbJTsvETIothBlcefqmk23CpNnUJJK+NyQyC21ZpTlVrfkYM66X0NNLdC1AZ/FI d8FBGo4YyYfiB7N6boU//2dbtfMyuQINBE6Jf0UBEADP9qXS2Alpn967SIj/Fo+TcMo0i+v1 KwoV7aF/cJWPGuIdxF+hN+uLJyCVTC28q+G8HZjylC5Z8u0/0fHcf5gjlrvw87a1TUIl1jky iZ3f9okG5QU/luVvHqf50sN6lCHJCsCnaZULc0inhPjyfhjEvg6DQw5HK1Y1J7KAhK9Git3D uoOYSxrvCAWwtQiWEqaZXlVW/7AA51hd0n1Lyf5eCvFJOAePl/dCqQO1PTIbw0wsuZiRmk7B agy6Z6qf8qmk9j+5MjBthMPnqrVSKsMMHmQNEvrbqqbrecXTQHLI9j7oFcfbZcPyyaN/Z4fD azMQIb+WkPiSdiPFE4hy10L6AtGHP42V/yUQea+MeCISt+DL+U4h/4BX2W8MXdvO2NYzmg/Z YZ5HtUl+TFxe3gk93IMgfoYEruNsPtsWJd/q8yIUKsV4Wj9t9rf294pSTtNGWdfXeCiAhnGp Hoi+mQbQ/E67ZEYnsCN79KPK1AVrY3A0YIN7Vsfz3Cb2Z8NbcG5kXWjb7L55WqQ9mPSbN8KE SyI0gBjoo8MxV0icgth1NQALkfbqOP0JHiK0FRyMT+0yWXSfbBhFnXhj88z5Six8CF9h8323 bT3oz0l5uSydNuqnbSR4MwQG9zcoGRugR+hAtTTw0OjudxF6K10tbbEgIKeWQ0hRAZJaUVU9 xNDawwARAQABiQIfBBgBAgAJBQJOiX9FAhsMAAoJECPQ0LrRPXpDCwUP/1PjLfQ7RaczAiBx TxPZzZbApu+Y9tpTYsOpl5sd3FAN6ZfrkRkK/80AuYp0DbYxVJsBpB6qwMPkphuYLIJzOKUn WL62lmgljmQkAsdZaWgjpTKLazXMDCUyS0BnOAYycjnkh+fR0A4rSnyjLv8o0Yc0/Al4crOk dJGDKxDdLW3tXBTiZMUm1dBoEUwxeDysi0/kZ3KCsUHvJRsbpOeteGkaQUGtCz2n5Iq8KpFL cbD52q5D1BH5AZZyIQEfC5Jp3mC7tAL21o3yQlB+6n6ckvxUa0AqAavUCBHH9r9X9ACKQNu3 /SghL+TGUh1xgnTXG4ysNd/WMWGYZl2hxSg0mSAtvWIUCXl1pXwxA6upyIb7q2ct5kodjjEI GiKBXsTwrAQTnJR/EFLTJGt41v6mMq1fqlKvVn90ij613+wd8Qd99oxQhE28mUF6pqMFftm9 6yRUVp+YSuQfscL7sSshqqgzho6H9nSpdswSMWxYDnJVe8KglZIcUiYv0Gjo9swakjT14GuQ 1rV93pEZyS2tfoo18ZnY84QKYoYtPIMLz+RvXzRikMkRE3jxLRAFrdG+3TqjM2AWBkVa+7ku Lk+lj+38zsACQuJVO2WFmclbIQmtCL07addPOUbU96oYfZqG5HGfu3EDmPk8dkRl0vVnjodo 2Y3aFlL+gnr1zUMjlFzD Organization: Approximate Message-ID: Date: Wed, 18 Sep 2019 10:58:16 +0100 User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <0501c049-67a6-9a63-e0d9-e043573e1211@kernel.org> Content-Language: en-US X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu On 17/09/2019 10:23, Marc Zyngier wrote: > On 17/09/2019 03:15, Shaokun Zhang wrote: >> Hi Marc, >> >> This is from Nianyao Tang. >> >> I'm planning to do some verification on our GIC-v4.1 implement. I would like some >> information about linux GIC-v4.1 driver. When will linux support GIC-v4.1 or what's >> the plan on developing GIC-v4.1 driver? > > The easy answer is that yes, there is a plan. There is some code, even, > just not quite in a usable state yet. I'll try to push something out > once I get a chance. FWIW, I've pushed out a branch containing the current state of this work at [1]. It doesn't really work at the moment (Doorbells and SGIs are unreliable), but hopefully that will give you an idea of what is going on. Being a work in progress, it is unstable, subject to being changed, rebased and deleted without warning. Thanks, M. [1] https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/log/?h=irq/gic-v4.1-devel -- Jazz is not dead, it just smells funny... _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm