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Date: Mon, 05 Sep 2011 12:59:50 -0700
From: "H. Peter Anvin" <hpa@zytor.com>
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To: "H.J. Lu" <hjl.tools@gmail.com>
CC: Arnd Bergmann <arnd@arndb.de>, Valdis.Kletnieks@vt.edu,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Christoph Hellwig <hch@infradead.org>,
        LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
        Thomas Gleixner <tglx@linutronix.de>,
        Richard Kuo <rkuo@codeaurora.org>, Mark Salter <msalter@redhat.com>,
        Jonas Bonn <jonas@southpole.se>, Tobias Klauser <tklauser@distanz.ch>
Subject: Re: RFD: x32 ABI system call numbers
References: <4E582577.2060805@zytor.com> <2722845.TegCUU4bu0@wuerfel> <CAMe9rOo2JdzerzfTAFER8rZEOGZkp6HxstdT4_3_s0x6UwTPow@mail.gmail.com> <201109051921.59776.arnd@arndb.de> <CAMe9rOpYy5Y27G7anE82+_udYUf6JGA3N=hZdnf_FieLkRXdBA@mail.gmail.com> <CAMe9rOoDjV8UC++X50FtNvgAac23rWu1EEju-3aUE939u8Lv1w@mail.gmail.com>
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On 09/05/2011 12:54 PM, H.J. Lu wrote:
> 
> Since  readv/writev/preadv/pwritev have const struct iovec *iov, I
> have to copy the whole array.  compat_sys seems more efficient.
> 

compat_sys for these do exactly what we want, right?

	-hpa