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QEMU has a wide selection of different functions for doing loads and stores; provide some overview documentation of what they do and how to pick which one to use. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <1507813181-11860-1-git-send-email-peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>