The ELE addresses memory physically; cache maintenance takes a virtual
address. Both buffer calls supply one and use it for both, in opposite
directions: get_random() runs up_flush_dcache() on a physical address,
get_key() hands the enclave a virtual one. Both fail silently, and both
are correct only while the two are equal.
Take the virtual address in both, maintain the cache on it, and translate
for the message. get_random() also gains the alignment check get_key()
already has.
Signed-off-by: Royyan Zahir <royzah@gmail.com>
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