From: "H. Peter Anvin" <hpa@zytor.com>
To: klibc@zytor.com,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: sys_mmap2 on different architectures
Date: Wed, 22 Feb 2006 13:45:46 -0800 [thread overview]
Message-ID: <43FCDB8A.5060100@zytor.com> (raw)
I've looked through the code for sys_mmap2 on several architectures, and
it looks like some architectures plays by the "shift is always 12" rule,
e.g. SPARC, and some expect userspace to actually obtain the page
size, e.g. PowerPC and MIPS. On some architectures, e.g. x86 and ARM,
the point is moot since PAGE_SIZE is always 2^12.
a. Is this correct, or have I misunderstood the code?
b. If so, is this right, or is this a bug? Right now both klibc and
µClibc consider the latter a bug.
c. Which architectures are affected which way?
-hpa
next reply other threads:[~2006-02-22 21:45 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-22 21:45 H. Peter Anvin [this message]
2006-02-22 21:54 ` sys_mmap2 on different architectures David S. Miller
2006-02-22 22:00 ` H. Peter Anvin
2006-02-23 0:05 ` H. Peter Anvin
2006-02-23 0:40 ` David S. Miller
2006-02-23 0:41 ` David S. Miller
2006-02-23 0:14 ` Benjamin LaHaise
2006-02-23 0:22 ` H. Peter Anvin
2006-02-23 0:43 ` David S. Miller
2006-02-23 0:59 ` H. Peter Anvin
2006-02-23 1:03 ` David S. Miller
2006-02-23 1:06 ` H. Peter Anvin
2006-02-23 17:39 ` Benjamin LaHaise
2006-02-23 17:47 ` H. Peter Anvin
2006-02-23 2:56 ` Paul Mackerras
2006-02-23 3:35 ` H. Peter Anvin
2006-02-23 17:32 ` Ralf Baechle
2006-02-23 17:43 ` H. Peter Anvin
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