Re: [Xen-devel] Question: how to unmap memory mapped with direct_kernel_remap_pfn_range() ?

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 15/9/06 03:07, "Santos, Jose Renato G" <joserenato.santos@xxxxxx> 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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