RE: [PATCH 01/15] avr32: convert to asm-generic/memory_model.h

[Luck, Tony]

> Seems like we should simply introduce a CONFIG_VMEM_MAP for ia64
> to get this started.  Does my memory trick me or did we used to have
> vmem_map on other architectures as well but managed to get rid of it
> everywhere but on ia64?

I think ia64 hung onto this because of the SGI sn1 platforms. They were
even more discontiguous than even SPARSEMEM_EXTREME could handle

-Tony
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RE: [PATCH 01/15] avr32: convert to asm-generic/memory_model.h

[Luck, Tony]

> Seems like we should simply introduce a CONFIG_VMEM_MAP for ia64
> to get this started.  Does my memory trick me or did we used to have
> vmem_map on other architectures as well but managed to get rid of it
> everywhere but on ia64?

I think ia64 hung onto this because of the SGI sn1 platforms. They were
even more discontiguous than even SPARSEMEM_EXTREME could handle

-Tony
--
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Re: [PATCH 01/15] avr32: convert to asm-generic/memory_model.h

[Christoph Hellwig]

On Fri, Sep 25, 2015 at 05:36:36PM -0700, Dan Williams wrote:
> I went to go attempt this, but ia64 is still a holdout, as its
> DISCONTIGMEM setup can't use the generic memory_model definitions.
> 
> #ifdef CONFIG_DISCONTIGMEM
> # define page_to_pfn(page)  ((unsigned long) (page - vmem_map))
> # define pfn_to_page(pfn)   (vmem_map + (pfn))
> #else
> # include 
> #endif
> #else
> # include 
> #endif

Seems like we should simply introduce a CONFIG_VMEM_MAP for ia64
to get this started.  Does my memory trick me or did we used to have
vmem_map on other architectures as well but managed to get rid of it
everywhere but on ia64?
--
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Re: [PATCH 01/15] avr32: convert to asm-generic/memory_model.h

[Christoph Hellwig]

On Fri, Sep 25, 2015 at 05:36:36PM -0700, Dan Williams wrote:
> I went to go attempt this, but ia64 is still a holdout, as its
> DISCONTIGMEM setup can't use the generic memory_model definitions.
> 
> #ifdef CONFIG_DISCONTIGMEM
> # define page_to_pfn(page)  ((unsigned long) (page - vmem_map))
> # define pfn_to_page(pfn)   (vmem_map + (pfn))
> #else
> # include 
> #endif
> #else
> # include 
> #endif

Seems like we should simply introduce a CONFIG_VMEM_MAP for ia64
to get this started.  Does my memory trick me or did we used to have
vmem_map on other architectures as well but managed to get rid of it
everywhere but on ia64?
--
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the body of a message to majord...@vger.kernel.org
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Re: [PATCH 01/15] avr32: convert to asm-generic/memory_model.h

[Dan Williams]

On Thu, Sep 24, 2015 at 8:10 AM, Christoph Hellwig  wrote:
> On Wed, Sep 23, 2015 at 12:41:18AM -0400, Dan Williams wrote:
>> Switch avr32/include/asm/page.h to use the common defintions for
>> pfn_to_page(), page_to_pfn(), and ARCH_PFN_OFFSET.
>
> This was the last architecture not using asm-generic/memory_model.h,
> so it might be time to move it to linux/ or even fold it into an
> existing header.

I went to go attempt this, but ia64 is still a holdout, as its
DISCONTIGMEM setup can't use the generic memory_model definitions.

#ifdef CONFIG_DISCONTIGMEM
# define page_to_pfn(page)  ((unsigned long) (page - vmem_map))
# define pfn_to_page(pfn)   (vmem_map + (pfn))
#else
# include 
#endif
#else
# include 
#endif
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Re: [PATCH 01/15] avr32: convert to asm-generic/memory_model.h

[Dan Williams]

On Thu, Sep 24, 2015 at 8:10 AM, Christoph Hellwig  wrote:
> On Wed, Sep 23, 2015 at 12:41:18AM -0400, Dan Williams wrote:
>> Switch avr32/include/asm/page.h to use the common defintions for
>> pfn_to_page(), page_to_pfn(), and ARCH_PFN_OFFSET.
>
> This was the last architecture not using asm-generic/memory_model.h,
> so it might be time to move it to linux/ or even fold it into an
> existing header.

I went to go attempt this, but ia64 is still a holdout, as its
DISCONTIGMEM setup can't use the generic memory_model definitions.

#ifdef CONFIG_DISCONTIGMEM
# define page_to_pfn(page)  ((unsigned long) (page - vmem_map))
# define pfn_to_page(pfn)   (vmem_map + (pfn))
#else
# include 
#endif
#else
# include 
#endif
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Re: [PATCH 01/15] avr32: convert to asm-generic/memory_model.h

[Christoph Hellwig]

On Wed, Sep 23, 2015 at 12:41:18AM -0400, Dan Williams wrote:
> Switch avr32/include/asm/page.h to use the common defintions for
> pfn_to_page(), page_to_pfn(), and ARCH_PFN_OFFSET.

This was the last architecture not using asm-generic/memory_model.h,
so it might be time to move it to linux/ or even fold it into an
existing header.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Re: [PATCH 01/15] avr32: convert to asm-generic/memory_model.h

[Christoph Hellwig]

On Wed, Sep 23, 2015 at 12:41:18AM -0400, Dan Williams wrote:
> Switch avr32/include/asm/page.h to use the common defintions for
> pfn_to_page(), page_to_pfn(), and ARCH_PFN_OFFSET.

This was the last architecture not using asm-generic/memory_model.h,
so it might be time to move it to linux/ or even fold it into an
existing header.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/