From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/arm64/include/asm/sparsemem.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 arch/arm64/include/asm/sparsemem.h (limited to 'arch/arm64/include/asm/sparsemem.h') diff --git a/arch/arm64/include/asm/sparsemem.h b/arch/arm64/include/asm/sparsemem.h new file mode 100644 index 000000000..4b7346342 --- /dev/null +++ b/arch/arm64/include/asm/sparsemem.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2012 ARM Ltd. + */ +#ifndef __ASM_SPARSEMEM_H +#define __ASM_SPARSEMEM_H + +#define MAX_PHYSMEM_BITS CONFIG_ARM64_PA_BITS + +/* + * Section size must be at least 512MB for 64K base + * page size config. Otherwise it will be less than + * (MAX_ORDER - 1) and the build process will fail. + */ +#ifdef CONFIG_ARM64_64K_PAGES +#define SECTION_SIZE_BITS 29 + +#else + +/* + * Section size must be at least 128MB for 4K base + * page size config. Otherwise PMD based huge page + * entries could not be created for vmemmap mappings. + * 16K follows 4K for simplicity. + */ +#define SECTION_SIZE_BITS 27 +#endif /* CONFIG_ARM64_64K_PAGES */ + +#endif -- cgit v1.2.3