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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
| commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
| tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /arch/arm64/include/asm/sparsemem.h | |
| parent | Initial commit. (diff) | |
| download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip | |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm64/include/asm/sparsemem.h')
| -rw-r--r-- | arch/arm64/include/asm/sparsemem.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/sparsemem.h b/arch/arm64/include/asm/sparsemem.h new file mode 100644 index 0000000000..5f54376210 --- /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 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 |