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Date: Wed, 8 Jul 2009 14:48:51 -0400 From: Mike Frysinger <vapier.adi@...il.com> To: Pavel Machek <pavel@....cz> Cc: David Howells <dhowells@...hat.com>, rgetz@...ckfin.uclinux.org, lethal@...ux-sh.org, gerg@...inux.org, uclinux-dist-devel@...ckfin.uclinux.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] FDPIC: Ignore the loader's PT_GNU_STACK when calculating the stack size On Fri, Jul 3, 2009 at 23:34, Pavel Machek wrote: > On Wed 2009-07-08 12:01:40, David Howells wrote: >> Pavel Machek <pavel@....cz> wrote: >> >> > The patch seems wrong to me; loader needs the stack, too, right? >> > >> > What about making sure that the loader specifies reasonable stack >> > size, instead? >> >> The loader doesn't need its own stack, unless it _is_ the executable. It uses >> the executable's stack. The problem is that the executable and the loader can >> both specify the stack size for NOMMU, but which one do we pick, or do we >> consider both. > > Imageine loader needs 64K, while executable only needs 4K. You surely > want to execute it with 64K stack, because it will not fit into 4K? i really dont think this is realistic. there is exactly one ldso that everyone uses under FDPIC ELF, and it needs a very minuscule stack. -mike -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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