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Peter Anvin" , Peter Zijlstra , Andrew Morton CC: , Will Deacon , Davidlohr Bueso , , Yushan Wang , Lorenzo Pieralisi , Mark Rutland , Dave Hansen , Thomas Gleixner , Ingo Molnar , Borislav Petkov , , Andy Lutomirski , Dave Jiang Subject: [PATCH v4 4/6] arm64: Select GENERIC_CPU_CACHE_MAINTENANCE Date: Wed, 22 Oct 2025 12:33:47 +0100 Message-ID: <20251022113349.1711388-5-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20251022113349.1711388-1-Jonathan.Cameron@huawei.com> References: <20251022113349.1711388-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.122.19.247] X-ClientProxiedBy: lhrpeml100011.china.huawei.com (7.191.174.247) To dubpeml100005.china.huawei.com (7.214.146.113) X-Rspamd-Server: rspam01 X-Stat-Signature: ujekq4f4n7ozzzu1o93frp4ygyzzdyhb X-Rspam-User: X-Rspamd-Queue-Id: 6AA9E4000E X-HE-Tag: 1761132960-803495 X-HE-Meta: U2FsdGVkX19x/j7omjPTXiXf2GTwG5QVjpuAZFftAAyw3RWbRM1l1x/9lM0DonZlCi5ZRlnk9haQoKW7REBRnt91R1T6p6GTXxI6ZtdDQwxcPHuocLBEmG4wnI6xI31/OEG6o468wpNHDlCA1yEqbsO4cbp1vVk1Ip1aZ6Y/LCHKp7HrUQA4MtfJf6HL6h+6zftH2F1En6MBBqT1Lh+KLI6sWmow5ndVdQixiG6mGbYXbjrPT6moRDzXl3afsc/v4ZbzbBQbD92F7/jBIu11hLxHg4XCoIO3H1YGqjr0Zauwk/rnvcDS2oZKkX2YEkFikCBsuCh9GZmUiRxX9m74tgmn5xVu1y8c2GIDHCz6oTHQqqxrq1Wosu8g6yNeqXYqxgw49AHfdBPa5Sop80o0ixzvmLKycCiE4JMQwGVaZ94UPuOA0RWO+sB+mp7OMOx5XUsHgVNshkE6IrLijzJEZ2U427a5Flwj7MIUmtkeGPvd60fQ8Nk5ciqxLtKFYm1RsYnElYdYILcyUHjs7D5PMcJDoDMO45wFqdgjhtXqVWUkvEf0Hi9t1lJaciy0ONLeEod54mW9oTDV2BtcqvA8gzMRRsBaT5ajMCvxN3gCBUs1cezjkYijT+Tc0ePhvCgmryl5QTrh2ksEvrQeY2IbrsBTu5EWAqWINF0qRFsCm4t1EeqOJ0cjv81Uw0ePmeX4uMdubUub5U9PUVTcVVNyTOGl9559Md7L0iiMRhym1QY37dy0OgJt/v20ah1TrU67rW2GqoHr8sTvIFq0l4chuG0GC6gROWmETsQvL+OsZIHluWS8LKMOlcRGudaGR3w3smmkUjrxarQsGFUsZk9mw6xMI2ypU/L0/PNpg0gvcCxGq4V0ZnAyfyOS36S9r95B13VzVc9rNUkAV1H9ts9Cg/W9zh1EOJiVpHIt5XFo+4oyYxQQh6eZ5whLIeqwzC9rfSYFwCrynoV6Ts726t1 gMKARbIe rs9maPFTv7KpZ0HGx3HofrmsYhcEdOcGiqzjdPdLycRcE3CTw9ujxDUsn3ZwHzCgi+RtAmao+ptwJ7bPsTcD/Mf3H0hlPz4+7n1SM3WK6EZC3knm5ZcKAZp7hMKtPku+UDPj+moVVoAh8LKRLdtBh6ECtiTHskY61Km9XZ48q124gUiXPTjQDBTQo73F+vS6DHo3gzvkApwchc2KxMch0Qj+G431olRT6Z7qN/kqCEJX0j8uhiZuUqlpvSxgsV1EuOqgHMzhUpr5xjG4zO7bJF0DCbDkkpQu68D76 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: The generic CPU cache maintenance framework provides a way to register drivers for devices implementing the underlying support for cpu_cache_has_invalidate_memregion(). Enable it for arm64 by selecting GENERIC_CPU_CACHE_MAINTENANCE which provides the implementation for, and in turn selects, ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION. Signed-off-by: Jonathan Cameron Acked-by: Catalin Marinas --- v4: Drop select ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION as that is now selected by GENERIC_CPU_CACHE_MAINTENANCE (Catalin Marinas) Picked up tag from Catalin. (thanks!) --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 6663ffd23f25..893e0af0bc51 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -149,6 +149,7 @@ config ARM64 select GENERIC_ARCH_TOPOLOGY select GENERIC_CLOCKEVENTS_BROADCAST select GENERIC_CPU_AUTOPROBE + select GENERIC_CPU_CACHE_MAINTENANCE select GENERIC_CPU_DEVICES select GENERIC_CPU_VULNERABILITIES select GENERIC_EARLY_IOREMAP -- 2.48.1