From: Anton Blanchard <anton@samba.org>
To: Andrew Morton <akpm@digeo.com>
Cc: Roland McGrath <roland@redhat.com>,
davidm@hpl.hp.com, torvalds@transmeta.com,
linux-kernel@vger.kernel.org
Subject: Re: FIXMAP-related change to mm/memory.c
Date: Sun, 15 Jun 2003 16:51:02 +1000 [thread overview]
Message-ID: <20030615065102.GD31148@krispykreme> (raw)
In-Reply-To: <20030613001517.5413e511.akpm@digeo.com>
> > static struct vm_area_struct fixmap_vma = {
> > /* Catch users - if there are any valid
> > ones, we can make this be "&init_mm" or
> > something. */
> > .vm_mm = NULL,
> > - .vm_start = FIXADDR_START,
> > - .vm_end = FIXADDR_TOP,
> > + .vm_start = FIXADDR_USER_START,
> > + .vm_end = FIXADDR_USER_END,
> > .vm_page_prot = PAGE_READONLY,
> > .vm_flags = VM_READ | VM_EXEC,
> > };
>
> Note that the current version of this code does not compile for User Mode
> Linux. Its FIXADDR_TOP is not a constant. It would be nice to fix that
> this time around.
>
> It appears that this patch will break x86_64, parisc and um.
Its a problem on ppc64 too. I want to put the signal trampolines into
a fixmap area above the stack, ie different places on 32bit and 64bit
executables.
Anton
next prev parent reply other threads:[~2003-06-15 6:37 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-13 1:24 FIXMAP-related change to mm/memory.c David Mosberger
2003-06-13 2:07 ` Roland McGrath
2003-06-13 2:16 ` David Mosberger
2003-06-13 6:34 ` Roland McGrath
2003-06-13 6:37 ` David Mosberger
2003-06-13 6:56 ` Roland McGrath
2003-06-13 7:15 ` Andrew Morton
2003-06-15 6:51 ` Anton Blanchard [this message]
2003-06-13 7:17 ` David Mosberger
2003-06-13 5:24 ` Linus Torvalds
2003-06-13 7:28 ` [BUG] " Riley Williams
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