I have a driver that calls __pa() on an address obtained via vmalloc(). This is not
supposed to work, and yet oddly it appears to. Is there a possibility, even a remote one,
that __pa() will return the correct physical address for a buffer returned by the
vmalloc() function?
Also, does the pgd/pmd/pte page-table walking work on addresses returned by kmalloc(), or
do I have to use __pa() to get the physical address?
--
Timur Tabi
Staff Software Engineer
[email protected]
One thing a Southern boy will never say is,
"I don't think duct tape will fix it."
-- Ed Smylie, NASA engineer for Apollo 13
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