From: Thavatchai Makphaibulcboke <thavatchai.makpahibulchoke@hp.com>
To: Lasse Collin <lasse.collin@tukaani.org>
Cc: "lethal@linux-sh.org" <lethal@linux-sh.org>,
"hpa@zytor.com" <hpa@zytor.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"mingo@redhat.com" <mingo@redhat.com>,
"x86@kernel.org" <x86@kernel.org>,
"kaloz@openwrt.org" <kaloz@openwrt.org>,
"matt.fleming@intel.com" <matt.fleming@intel.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
"linux-sh@vger.kernel.org" <linux-sh@vger.kernel.org>,
"linux@arm.linux.org.uk" <linux@arm.linux.org.uk>,
"schwidefsky@de.ibm.com" <schwidefsky@de.ibm.com>,
"heiko.carstens@de.ibm.com" <heiko.carstens@de.ibm.com>,
"linux390@de.ibm.com" <linux390@de.ibm.com>
Subject: Re: [PATCH] lib/decompress_unxz.c: removing all memory helper functions
Date: Fri, 25 May 2012 11:05:55 -0600 [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.
next prev parent reply other threads:[~2012-05-25 17:06 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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