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Author SHA1 Message Date
Paolo Bonzini de99dab06f atomics: update documentation 
Some of the constraints on operand sizes have been relaxed, so adjust the
documentation.

Deprecate atomic_mb_read and atomic_mb_set; it is not really possible to
use them correctly because they do not interoperate with sequentially-consistent
RMW operations.

Finally, extend the memory barrier pairing section to cover acquire and
release semantics in general, roughly based on the KVM Forum 2016 talk,
"<atomic.h> weapons".

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2020-04-13 02:56:03 -04:00
Paolo Bonzini 15e8699f00 atomics: convert to reStructuredText 
No attempts to fix or update the text; these are left for the next
patch in the series.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2020-04-11 08:49:25 -04:00