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([2a01:cb1c:fcf:4600:1c53:498d:36f3:7085]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-48e37edce4fsm3456370f8f.6.2026.10.23.00.23.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 23 Oct 2026 00:23:29 -0700 (PDT) Message-ID: <3bf32179-dd0d-411c-af37-54d50eb7986e@linaro.org> Date: Fri, 23 Oct 2026 09:23:28 +0200 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Neil Armstrong Reply-To: Neil Armstrong Subject: Re: [PATCH 0/4] Fix and complete the GIC description of Amlogic S7 and S7D To: Carlo Caione , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Xianwei Zhao Cc: linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20261022-upstream-s7-s7d-gicc-size-v1-0-8285053cf4ee@baylibre.com> Content-Language: en-US, fr Autocrypt: addr=neil.armstrong@linaro.org; keydata= xsBNBE1ZBs8BCAD78xVLsXPwV/2qQx2FaO/7mhWL0Qodw8UcQJnkrWmgTFRobtTWxuRx8WWP GTjuhvbleoQ5Cxjr+v+1ARGCH46MxFP5DwauzPekwJUD5QKZlaw/bURTLmS2id5wWi3lqVH4 BVF2WzvGyyeV1o4RTCYDnZ9VLLylJ9bneEaIs/7cjCEbipGGFlfIML3sfqnIvMAxIMZrvcl9 qPV2k+KQ7q+aXavU5W+yLNn7QtXUB530Zlk/d2ETgzQ5FLYYnUDAaRl+8JUTjc0CNOTpCeik 80TZcE6f8M76Xa6yU8VcNko94Ck7iB4vj70q76P/J7kt98hklrr85/3NU3oti3nrIHmHABEB AAHNKk5laWwgQXJtc3Ryb25nIDxuZWlsLmFybXN0cm9uZ0BsaW5hcm8ub3JnPsLAkQQTAQoA OwIbIwULCQgHAwUVCgkICwUWAgMBAAIeAQIXgBYhBInsPQWERiF0UPIoSBaat7Gkz/iuBQJk Q5wSAhkBAAoJEBaat7Gkz/iuyhMIANiD94qDtUTJRfEW6GwXmtKWwl/mvqQtaTtZID2dos04 YqBbshiJbejgVJjy+HODcNUIKBB3PSLaln4ltdsV73SBcwUNdzebfKspAQunCM22Mn6FBIxQ GizsMLcP/0FX4en9NaKGfK6ZdKK6kN1GR9YffMJd2P08EO8mHowmSRe/ExAODhAs9W7XXExw UNCY4pVJyRPpEhv373vvff60bHxc1k/FF9WaPscMt7hlkbFLUs85kHtQAmr8pV5Hy9ezsSRa GzJmiVclkPc2BY592IGBXRDQ38urXeM4nfhhvqA50b/nAEXc6FzqgXqDkEIwR66/Gbp0t3+r yQzpKRyQif3OwE0ETVkGzwEIALyKDN/OGURaHBVzwjgYq+ZtifvekdrSNl8TIDH8g1xicBYp QTbPn6bbSZbdvfeQPNCcD4/EhXZuhQXMcoJsQQQnO4vwVULmPGgtGf8PVc7dxKOeta+qUh6+ SRh3vIcAUFHDT3f/Zdspz+e2E0hPV2hiSvICLk11qO6cyJE13zeNFoeY3ggrKY+IzbFomIZY 4yG6xI99NIPEVE9lNBXBKIlewIyVlkOaYvJWSV+p5gdJXOvScNN1epm5YHmf9aE2ZjnqZGoM Mtsyw18YoX9BqMFInxqYQQ3j/HpVgTSvmo5ea5qQDDUaCsaTf8UeDcwYOtgI8iL4oHcsGtUX oUk33HEAEQEAAcLAXwQYAQIACQUCTVkGzwIbDAAKCRAWmrexpM/4rrXiB/sGbkQ6itMrAIfn M7IbRuiSZS1unlySUVYu3SD6YBYnNi3G5EpbwfBNuT3H8//rVvtOFK4OD8cRYkxXRQmTvqa3 3eDIHu/zr1HMKErm+2SD6PO9umRef8V82o2oaCLvf4WeIssFjwB0b6a12opuRP7yo3E3gTCS KmbUuLv1CtxKQF+fUV1cVaTPMyT25Od+RC1K+iOR0F54oUJvJeq7fUzbn/KdlhA8XPGzwGRy 4zcsPWvwnXgfe5tk680fEKZVwOZKIEuJC3v+/yZpQzDvGYJvbyix0lHnrCzq43WefRHI5XTT QbM0WUIBIcGmq38+OgUsMYu4NzLu7uZFAcmp6h8g Organization: Linaro In-Reply-To: <20261022-upstream-s7-s7d-gicc-size-v1-0-8285053cf4ee@baylibre.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 10/22/26 20:30, Carlo Caione wrote: > The S7 and S7D device trees describe only the first 256 bytes of the > GIC-400 CPU interface, which spans 8 KiB, and leave out its virtual > interface control (GICH) and virtual CPU interface (GICV) regions. > > With the short CPU interface, the GIC driver disables the split priority > drop and deactivation mode and warns at boot (patches 1 and 2). Without > GICH and GICV, it cannot hand the GIC over to KVM (patches 3 and 4). It > needs the split mode for that too, so KVM gets its in-kernel vGIC only > with the whole series. > > Signed-off-by: Carlo Caione > --- > Carlo Caione (4): > arm64: dts: amlogic: s7: fix the GIC CPU interface region size > arm64: dts: amlogic: s7d: fix the GIC CPU interface region size > arm64: dts: amlogic: s7: describe the GIC virtualization regions > arm64: dts: amlogic: s7d: describe the GIC virtualization regions > > arch/arm64/boot/dts/amlogic/amlogic-s7.dtsi | 4 +++- > arch/arm64/boot/dts/amlogic/amlogic-s7d.dtsi | 4 +++- > 2 files changed, 6 insertions(+), 2 deletions(-) > --- > base-commit: 8610d31587e139380db9cb8708f4263833b482d0 > change-id: 20261022-upstream-s7-s7d-gicc-size-db94cb656d36 > > Best regards, > -- > Carlo Caione Reviewed-by: Neil Armstrong Thanks, Neil