Re: [Xen-ia64-devel] [PATCH] compliation work around for sparsemem

[Simon Horman <horms@xxxxxxxxxxxx>]

On Tue, May 01, 2007 at 06:28:08PM +0900, Isaku Yamahata wrote:
> sparsemem compilation work around.
> 
> NOTE:
> To compile with CONFIG_SPARSEMEM_MANUAL=y,
> CONFIG_NUMA=y and CONFIG_ACPI_NUMA=y are also needed.
> To compile with CONFIG_DISCONTIGMEM_MANUAL=y,
> CONFIG_DISCONTIG_MEM=y, CONFIG_VIRTUAL_MEM_MAP=y and CONFIG_NUMA=y
> are needed.
> These requirements are from vanilla linux. It's not xen-related issue.

Has this been resolved in newer kernels?

> # HG changeset patch
> # User yamahata@xxxxxxxxxxxxx
> # Date 1177993380 -32400
> # Node ID 9c503e047679028a73faaaaacf98e3614a183c62
> # Parent  b14d777275e39dc51390e614464a1e17be21f12e
> sparsemem compilation work around
> PATCHNAME: sparsemem_compilation_work_around
> 
> Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
> 
> diff -r b14d777275e3 -r 9c503e047679 
> linux-2.6-xen-sparse/include/asm-ia64/maddr.h
> --- a/linux-2.6-xen-sparse/include/asm-ia64/maddr.h   Tue May 01 16:25:36 
> 2007 +0900
> +++ b/linux-2.6-xen-sparse/include/asm-ia64/maddr.h   Tue May 01 13:23:00 
> 2007 +0900
> @@ -65,6 +65,12 @@ machine_to_phys_for_dma(unsigned long ma
>       return phys;
>  }
>  
> +#ifdef CONFIG_SPARSEMEM
> +// When CONFIG_SPARSEMEM=y, pfn_valid() is defined in
> +// linux/include/linux/mmzone.h. Hoever #include <linux/mmzone.h>
> +// causes the header inclusion hell.
> +static inline int pfn_valid(unsigned long pfn);
> +#endif
>  static inline unsigned long
>  mfn_to_local_pfn(unsigned long mfn)
>  {

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