[PATCH v3 5/8] arm64: Select GENERIC_CPU_CACHE_MAINTENANCE and ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Date: 2025-08-20 10:32:33
Also in:
linux-acpi, linux-arch, linux-cxl, linux-mm
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
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 <Jonathan.Cameron@huawei.com> --- 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