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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-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 0B0B3120010 X-Stat-Signature: ye75mfdow3yfwd77nb8urfsqnhtgkwa7 X-Rspam-User: X-HE-Tag: 1755685950-459419 X-HE-Meta: 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 0ecOZlSW tRuWI5adMoBPOxO0THHl5c/bbyxeBZ5FA0IH/5KCmDcxkkORN41jbFXthufdXO5cLb2dDv0umqfQagyf8OwX7h2190m7OyXUFu/nhSUY3SVedfwCdKfZFjiXG1+mlapc4k11y16XQ4YBJ/MDeutnAbI41h/EcVYjQsqH/fhs+V/mJzkzBoh4QMVEVAGspf8MkJJ4jm6zUvUKY9DlprjngE2hHAYXzAilHSEj2EYu2OHAU1ck= 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: 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