(Moar reviewers)
On Mon, 22 Dec, at 07:08:38PM, Ard Biesheuvel wrote:
> This introduces the following functions:
> - memblock_add_phys(), that registers regions in the 'physmem' memblock map if
> CONFIG_HAVE_MEMBLOCK_PHYS_MAP is set; otherwise, it is a nop
> - memblock_is_physmem(), returns whether a physical address is classified as
> physical memory.
>
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
> ---
> include/linux/memblock.h | 10 ++++++++++
> mm/memblock.c | 15 +++++++++++++++
> 2 files changed, 25 insertions(+)
>
> diff --git a/include/linux/memblock.h b/include/linux/memblock.h
> index e8cc45307f8f..d32fe838c6ca 100644
> --- a/include/linux/memblock.h
> +++ b/include/linux/memblock.h
> @@ -365,6 +365,16 @@ static inline unsigned long memblock_region_reserved_end_pfn(const struct memblo
> #define __initdata_memblock
> #endif
>
> +#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
> +int memblock_add_phys(phys_addr_t base, phys_addr_t size);
> +int memblock_is_physmem(phys_addr_t addr);
> +#else
> +static inline int memblock_add_phys(phys_addr_t base, phys_addr_t size)
> +{
> + return 0;
> +}
> +#endif /* CONFIG_HAVE_MEMBLOCK_PHYS_MAP */
> +
> #else
> static inline phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align)
> {
> diff --git a/mm/memblock.c b/mm/memblock.c
> index c27353beb260..107aa5ee2d7b 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -586,6 +586,14 @@ int __init_memblock memblock_add(phys_addr_t base, phys_addr_t size)
> MAX_NUMNODES, 0);
> }
>
> +#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
> +int __init_memblock memblock_add_phys(phys_addr_t base, phys_addr_t size)
> +{
> + return memblock_add_range(&memblock.physmem, base, size,
> + MAX_NUMNODES, 0);
> +}
> +#endif
> +
> /**
> * memblock_isolate_range - isolate given range into disjoint memblocks
> * @type: memblock type to isolate range for
> @@ -1398,6 +1406,13 @@ int __init_memblock memblock_is_memory(phys_addr_t addr)
> return memblock_search(&memblock.memory, addr) != -1;
> }
>
> +#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
> +int __init_memblock memblock_is_physmem(phys_addr_t addr)
> +{
> + return memblock_search(&memblock.physmem, addr) != -1;
> +}
> +#endif
> +
> #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
> int __init_memblock memblock_search_pfn_nid(unsigned long pfn,
> unsigned long *start_pfn, unsigned long *end_pfn)
> --
> 1.8.3.2
>
> --
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--
Matt Fleming, Intel Open Source Technology Center
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