x86: provide readq()/writeq() on 32-bit too
Impact: add new API for drivers Add implementation of readq/writeq to x86_32, and add config value to the x86 architecture to determine existence of readq/writeq. Signed-off-by: Hitoshi Mitake <h.mitake@gmail.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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