Re: [PATCH 7/8] i386: bitops: Kill needless usage of __asm__ __volatile__

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Satyam Sharma wrote:
> From: Satyam Sharma <[email protected]>
>
> [7/8] i386: bitops: Kill needless usage of __asm__ __volatile__
>
> Another oddity I noticed in this file. The semantics of __volatile__
> when used to qualify inline __asm__ are that the compiler will not
> (1) elid, or, (2) reorder, or, (3) intersperse, our inline asm with
> the rest of the generated code.
>   

"asm volatile" does not mean that at all.  It only guarantees (1), and
only then if the asm is ever reachable.

    J
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux