Re: [tip:core/locking] locking, x86: Slightly shorten __ticket_spin_trylock()

[Jan Beulich]

>>> Avi Kivity <avi@xxxxxxxxxx> 02.12.09 15:12 >>>
>Wouldn't 'u8 ret', as an additional argument be sufficient? gcc still 
>ought to be able to use the same register for new and ret if we remove 
>the early clobber.

We can't (validly) remove the early-clobber, otherwise the compiler
would be permitted to use a register also used for addressing the lock
structure for "new".

Jan

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