Messages in this thread | | | Date | Mon, 19 Sep 2005 11:21:59 -0700 (PDT) | Subject | Re: aoe fails on sparc64 | From | "David S. Miller" <> |
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From: Ed L Cashin <ecashin@coraid.com> Date: Mon, 19 Sep 2005 10:24:00 -0400
> 1) Passing le64_to_cpup an unaligned pointer is "OK" and within the > intended use of the function. I'm having trouble finding whether > this is documented somewhere. > > 2) These new changes to the sparc64 unaligned access fault handling > will make it OK to leave the aoe driver the way it is in the > mainline kernel.
Both #1 and #2 are true.
Although it's very much discouraged to dereference unaligned pointers, especially in performance critical code (which this AOE case is not, thankfully), because performance will be really bad as the trap handler has to fix up the access on RISC platforms. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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