diff options
| author | Catalin Marinas <catalin.marinas@arm.com> | 2021-04-20 10:35:59 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2021-04-23 14:18:21 +0100 |
| commit | 782276b4d0ad2fdd7096f8177bb7a9827f5258e4 (patch) | |
| tree | fc93c1b35be976250e3c925a5bcf97ffb42fd49e /arch/arm64/include/asm/sparsemem.h | |
| parent | ef94340583eec5cb1544dc41a87baa4f684b3fe1 (diff) | |
arm64: Force SPARSEMEM_VMEMMAP as the only memory management model
Currently arm64 allows a choice of FLATMEM, SPARSEMEM and
SPARSEMEM_VMEMMAP. However, only the latter is tested regularly. FLATMEM
does not seem to boot in certain configurations (guest under KVM with
Qemu as a VMM). Since the reduction of the SECTION_SIZE_BITS to 27 (4K
pages) or 29 (64K page), there's little argument against the memory
wasted by the mem_map array with SPARSEMEM.
Make SPARSEMEM_VMEMMAP the only available option, non-selectable, and
remove the corresponding #ifdefs under arch/arm64/.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Link: https://lore.kernel.org/r/20210420093559.23168-1-catalin.marinas@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/sparsemem.h')
| -rw-r--r-- | arch/arm64/include/asm/sparsemem.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/arm64/include/asm/sparsemem.h b/arch/arm64/include/asm/sparsemem.h index eb4a75d720ed..4b73463423c3 100644 --- a/arch/arm64/include/asm/sparsemem.h +++ b/arch/arm64/include/asm/sparsemem.h @@ -5,7 +5,6 @@ #ifndef __ASM_SPARSEMEM_H #define __ASM_SPARSEMEM_H -#ifdef CONFIG_SPARSEMEM #define MAX_PHYSMEM_BITS CONFIG_ARM64_PA_BITS /* @@ -27,6 +26,4 @@ #define SECTION_SIZE_BITS 27 #endif /* CONFIG_ARM64_64K_PAGES */ -#endif /* CONFIG_SPARSEMEM*/ - #endif |