Xen devel - Sep 2006 - Question: how to unmap memory mapped with direct_kernel_remap_pfn_range() ?

Hi,

Xenoprof buffers are mapped into the kernel using
direct_kernel_remap_pfn_range().
I need to unmap the buffer when it is not needed anymore.

However, I could not find any function that unmaps pages previously
mapped with direct_kernel_remap_pfn_range().
Any suggestion on how to do this?

Thanks

Renato

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On 15/9/06 03:07, "Santos, Jose Renato G"
<joserenato.santos@hp.com> wrote:
> Xenoprof buffers are mapped into the kernel using
> direct_kernel_remap_pfn_range().
> I need to unmap the buffer when it is not needed anymore.
> 
> However, I could not find any function that unmaps pages previously
> mapped with direct_kernel_remap_pfn_range().
> Any suggestion on how to do this?
Remember the vm_struct returned by alloc_vm_area(). Pass it to
free_vm_area() to unmap and free.

 -- Keir



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Thanks, Keir
Renato 
> -----Original Message-----
> From: Keir Fraser [mailto:Keir.Fraser@cl.cam.ac.uk] 
> Sent: Friday, September 15, 2006 2:54 AM
> To: Santos, Jose Renato G; xen-devel@lists.xensource.com
> Subject: Re: [Xen-devel] Question: how to unmap memory mapped 
> with direct_kernel_remap_pfn_range() ?
> 
> 
> 
> 
> On 15/9/06 03:07, "Santos, Jose Renato G" 
> <joserenato.santos@hp.com> wrote:
> 
> > Xenoprof buffers are mapped into the kernel using 
> > direct_kernel_remap_pfn_range().
> > I need to unmap the buffer when it is not needed anymore.
> > 
> > However, I could not find any function that unmaps pages previously 
> > mapped with direct_kernel_remap_pfn_range().
> > Any suggestion on how to do this?
> 
> Remember the vm_struct returned by alloc_vm_area(). Pass it to
> free_vm_area() to unmap and free.
> 
>  -- Keir
> 
> 
> 
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