Todd Kjos 8ced0c6231
binder: add functions to copy to/from binder buffers ...
Avoid vm_area when copying to or from binder buffers.
Instead, new copy functions are added that copy from
kernel space to binder buffer space. These use
kmap_atomic() and kunmap_atomic() to create temporary
mappings and then memcpy() is used to copy within
that page.
Also, kmap_atomic() / kunmap_atomic() use the appropriate
cache flushing to support VIVT cache architectures.
Allow binder to build if CPU_CACHE_VIVT is defined.
Several uses of the new functions are added here. More
to follow in subsequent patches.
Signed-off-by: Todd Kjos <tkjos@google.com >
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
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8ced0c6231