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Peter Anvin" , Peter Zijlstra CC: Yicong Yang , , Yushan Wang , Lorenzo Pieralisi , Mark Rutland , Dave Hansen , Thomas Gleixner , Ingo Molnar , Borislav Petkov , , Andy Lutomirski Subject: [PATCH v3 5/8] arm64: Select GENERIC_CPU_CACHE_MAINTENANCE and ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION Date: Wed, 20 Aug 2025 11:29:47 +0100 Message-ID: <20250820102950.175065-6-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250820102950.175065-1-Jonathan.Cameron@huawei.com> References: <20250820102950.175065-1-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: lhrpeml500005.china.huawei.com (7.191.163.240) To frapeml500008.china.huawei.com (7.182.85.71) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250820_113234_220024_7A2D3ED0 X-CRM114-Status: GOOD ( 10.62 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Ensure the hooks that the generic cache maintenance framework uses are available on ARM64 by selecting ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION. The generic CPU cache maintenance framework provides a way to register drivers for devices implementing the underlying support for cpu_cache_has_invalidate_memregion(). Signed-off-by: Jonathan Cameron --- arch/arm64/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index e9bbfacc35a6..15bf429b3f59 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -21,6 +21,7 @@ config ARM64 select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE select ARCH_HAS_CACHE_LINE_SIZE select ARCH_HAS_CC_PLATFORM + select ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DEBUG_VIRTUAL select ARCH_HAS_DEBUG_VM_PGTABLE @@ -146,6 +147,7 @@ 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