mirror of https://gitee.com/openkylin/linux.git
[ARM] Add initial sparsemem support
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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@ -422,6 +422,8 @@ config ARCH_SA1100
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bool "SA1100-based"
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select ISA
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select ARCH_DISCONTIGMEM_ENABLE
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select ARCH_SPARSEMEM_ENABLE
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select ARCH_SELECT_MEMORY_MODEL
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select ARCH_MTD_XIP
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select GENERIC_GPIO
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select GENERIC_TIME
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@ -774,6 +776,12 @@ config ARCH_DISCONTIGMEM_ENABLE
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or have huge holes in the physical address space for other reasons.
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See <file:Documentation/vm/numa> for more.
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config ARCH_SPARSEMEM_ENABLE
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bool
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config ARCH_SELECT_MEMORY_MODEL
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bool
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config NODES_SHIFT
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int
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default "4" if ARCH_LH7A40X
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@ -31,6 +31,8 @@ config ARCH_EDB7211
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bool "EDB7211"
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select ISA
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select ARCH_DISCONTIGMEM_ENABLE
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select ARCH_SPARSEMEM_ENABLE
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select ARCH_SELECT_MEMORY_MODEL
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help
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Say Y here if you intend to run this kernel on a Cirrus Logic EDB-7211
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evaluation board.
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@ -217,7 +217,10 @@ static inline __deprecated void *bus_to_virt(unsigned long x)
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#ifndef CONFIG_DISCONTIGMEM
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#define ARCH_PFN_OFFSET PHYS_PFN_OFFSET
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#ifndef CONFIG_SPARSEMEM
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#define pfn_valid(pfn) ((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr))
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#endif
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#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
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#define virt_addr_valid(kaddr) ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory)
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@ -0,0 +1,10 @@
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#ifndef ASMARM_SPARSEMEM_H
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#define ASMARM_SPARSEMEM_H
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#include <asm/memory.h>
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#define MAX_PHYSADDR_BITS 32
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#define MAX_PHYSMEM_BITS 32
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#define SECTION_SIZE_BITS NODE_MEM_SIZE_BITS
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#endif
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