On Wed, May 9, 2012 at 5:40 AM, Fredrick [off-list ref] wrote:

Hi,

I need to convert a user virtual address to its
corresponding physical address.
I know that if the virtual address is from kernel,
we could use virt_to_phys.
Is there a similar helper function
to convert user virtual address.?

Hi Fredrick,

Please elaborate the purpose,

User-space application allowed to have virtual address upto 3GB, assuming
1:3 address space split.
And its not mandatory for all user-space address to be valid and to have
all user-space address to have a valid physical address mapping.


Thanks,
Chetan

Thanks,

Fredrick


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