From: Paul Mackerras <paulus@samba.org>
To: Andrew Morton <akpm@osdl.org>
Cc: tzachar@cs.bgu.ac.il, linux-kernel@vger.kernel.org, juhl-lkml@dif.dk
Subject: Re: binfmt_elf padzero problems
Date: Fri, 18 Mar 2005 13:47:56 +1100 [thread overview]
Message-ID: <16954.16732.434778.495005@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <20050317144929.3b468531.akpm@osdl.org>
Andrew Morton writes:
> I guess if the bss has zero length then we can skip the zeroing of the end
> of the page at the end of bss, as long as we're dead sure that we didn't
> accidentally instantiate a single page on behalf of that zero-length bss.
There is another thing I noticed about the bss code, which is that it
doesn't give the bss the permissions from the PT_LOAD segment, rather
it just uses VM_DATA_DEFAULT_FLAGS. That doesn't matter at the moment
but may matter in future for ppc32.
Paul.
prev parent reply other threads:[~2005-03-18 2:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-17 19:10 Nir Tzachar
2005-03-17 22:49 ` Andrew Morton
2005-03-18 2:47 ` Paul Mackerras [this message]
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