Linus Torvalds schrieb:
> On Sat, 22 Mar 2008, Linus Torvalds wrote:
>   
>> AND no, I don't think our x86-32 ioremap() actually works for this case, 
>> because while the resource data may have the full 64 bits, when the 
>> ioremap() happens it gets truncated to 32 bits.
>>     
>
> Does this patch make any difference?
>
> (ENTIRELY untested, I checked that it compiles on x86-64, but didn't even 
> test a 32-bit build, I'm hoping whoever sees this issue can also fix up 
> the inevitable small missed pieces)
>
> 		Linus
>
> ---
>  arch/x86/mm/ioremap.c   |    6 +++---
>  include/asm-x86/io_32.h |    6 +++---
>  include/asm-x86/io_64.h |    6 +++---
>  lib/iomap.c             |    2 +-
>  4 files changed, 10 insertions(+), 10 deletions(-)
>
> diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
> index 8fe576b..4afaba0 100644
> --- a/arch/x86/mm/ioremap.c
> +++ b/arch/x86/mm/ioremap.c
> @@ -106,7 +106,7 @@ static int ioremap_change_attr(unsigned long vaddr, unsigned long size,
>   * have to convert them into an offset in a page-aligned mapping, but the
>   * caller shouldn't need to know that small detail.
>   */
> -static void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
> +static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size,
>  			       enum ioremap_mode mode)
>  {
>  	unsigned long pfn, offset, last_addr, vaddr;
> @@ -193,13 +193,13 @@ static void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
>   *
>   * Must be freed with iounmap.
>   */
> -void __iomem *ioremap_nocache(unsigned long phys_addr, unsigned long size)
> +void __iomem *ioremap_nocache(resource_size_t phys_addr, unsigned long size)
>  {
>  	return __ioremap(phys_addr, size, IOR_MODE_UNCACHED);
>  }
>  EXPORT_SYMBOL(ioremap_nocache);
>  
> -void __iomem *ioremap_cache(unsigned long phys_addr, unsigned long size)
> +void __iomem *ioremap_cache(resource_size_t phys_addr, unsigned long size)
>  {
>  	return __ioremap(phys_addr, size, IOR_MODE_CACHED);
>  }
> diff --git a/include/asm-x86/io_32.h b/include/asm-x86/io_32.h
> index 58d2c45..d4d8fbd 100644
> --- a/include/asm-x86/io_32.h
> +++ b/include/asm-x86/io_32.h
> @@ -114,13 +114,13 @@ static inline void * phys_to_virt(unsigned long address)
>   * If the area you are trying to map is a PCI BAR you should have a
>   * look at pci_iomap().
>   */
> -extern void __iomem *ioremap_nocache(unsigned long offset, unsigned long size);
> -extern void __iomem *ioremap_cache(unsigned long offset, unsigned long size);
> +extern void __iomem *ioremap_nocache(resource_size_t offset, unsigned long size);
> +extern void __iomem *ioremap_cache(resource_size_t offset, unsigned long size);
>  
>  /*
>   * The default ioremap() behavior is non-cached:
>   */
> -static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
> +static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
>  {
>  	return ioremap_nocache(offset, size);
>  }
> diff --git a/include/asm-x86/io_64.h b/include/asm-x86/io_64.h
> index f64a59c..db0be20 100644
> --- a/include/asm-x86/io_64.h
> +++ b/include/asm-x86/io_64.h
> @@ -158,13 +158,13 @@ extern void early_iounmap(void *addr, unsigned long size);
>   * it's useful if some control registers are in such an area and write combining
>   * or read caching is not desirable:
>   */
> -extern void __iomem *ioremap_nocache(unsigned long offset, unsigned long size);
> -extern void __iomem *ioremap_cache(unsigned long offset, unsigned long size);
> +extern void __iomem *ioremap_nocache(resource_size_t offset, unsigned long size);
> +extern void __iomem *ioremap_cache(resource_size_t offset, unsigned long size);
>  
>  /*
>   * The default ioremap() behavior is non-cached:
>   */
> -static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
> +static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
>  {
>  	return ioremap_nocache(offset, size);
>  }
> diff --git a/lib/iomap.c b/lib/iomap.c
> index db004a9..dd6ca48 100644
> --- a/lib/iomap.c
> +++ b/lib/iomap.c
> @@ -256,7 +256,7 @@ EXPORT_SYMBOL(ioport_unmap);
>   * */
>  void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
>  {
> -	unsigned long start = pci_resource_start(dev, bar);
> +	resource_size_t start = pci_resource_start(dev, bar);
>  	unsigned long len = pci_resource_len(dev, bar);
>  	unsigned long flags = pci_resource_flags(dev, bar);
>  
>
>   
Yes. With this patch applied the error messages doesn't appear anymore.
$ git describe
v2.6.25-rc6-268-gd2532dd

$ git status
# On branch master
# Changed but not updated:
#   (use "git add <file>..." to update what will be committed)
#
#       modified:   arch/x86/mm/ioremap.c
#       modified:   include/asm-x86/io_32.h
#       modified:   include/asm-x86/io_64.h
#       modified:   lib/iomap.c
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#       arch/x86/boot/offsets.h
no changes added to commit (use "git add" and/or "git commit -a")

See also attached dmesg.