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From: Thavatchai Makphaibulcboke <thavatchai.makpahibulchoke@hp.com>
To: linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] lib/decompress_unxz.c: removing all memory helper functions
Date: Fri, 25 May 2012 17:05:55 +0000	[thread overview]
Message-ID: <4FBFBBF3.3090204@hp.com> (raw)
In-Reply-To: <4FBFB3F3.1000606@hp.com>

> We could do that.  But according to the comment in the original
> implementation, there seems to be a concern regarding its performance
> speed. If you believe all archs' memcpy would give comparable
> performance to the memmove. then I could do that.
> 

Also how about the case for overlapping buffer, especially when the
destination is at a higher address?  I do not believe memcpy guarantee
to work.

Thanks,
Mak.



  reply	other threads:[~2012-05-25 17:05 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-05-24 16:03 [PATCH] lib/decompress_unxz.c: removing all memory helper functions T Makphaibulchoke
2012-05-24 17:26 ` Joe Perches
2012-05-24 17:29   ` H. Peter Anvin
2012-05-24 17:40     ` Joe Perches
2012-05-24 17:41       ` H. Peter Anvin
2012-05-24 17:50         ` Joe Perches
2012-05-24 17:56           ` H. Peter Anvin
2012-05-25  8:34 ` Lasse Collin
2012-05-25 16:31   ` Thavatchai Makphaibulcboke
2012-05-25 17:05     ` Thavatchai Makphaibulcboke [this message]
2012-05-25 17:13       ` H. Peter Anvin
2012-05-25 19:35     ` Lasse Collin
2012-05-28  7:03 ` Jean-Christophe PLAGNIOL-VILLARD
2012-06-01  2:48   ` Thavatchai Makphaibulcboke
2012-06-01  2:54     ` Joe Perches
2012-06-01  3:38     ` H. Peter Anvin
2012-06-01 18:37       ` Thavatchai Makphaibulcboke
2012-06-01 18:46         ` H. Peter Anvin
2012-06-01 18:58           ` Thavatchai Makphaibulcboke

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