From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [PATCH prototype] [0/8] Predictive bitmaps for ELF executables From: Nicholas Miell In-Reply-To: <20080322071755.GP2346@one.firstfloor.org> References: <20080318095715.27120788.akpm@linux-foundation.org> <20080318172045.GI11966@one.firstfloor.org> <20080318104437.966c10ec.akpm@linux-foundation.org> <20080319083228.GM11966@one.firstfloor.org> <20080319020440.80379d50.akpm@linux-foundation.org> <20080320090005.GA25734@one.firstfloor.org> <20080321172644.GG2346@one.firstfloor.org> <20080322071755.GP2346@one.firstfloor.org> Content-Type: text/plain Date: Sat, 22 Mar 2008 00:24:55 -0700 Message-Id: <1206170695.2438.39.camel@entropy> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Andi Kleen Cc: Ulrich Drepper , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On Sat, 2008-03-22 at 08:17 +0100, Andi Kleen wrote: > On Fri, Mar 21, 2008 at 09:36:51PM -0700, Ulrich Drepper wrote: > > On Fri, Mar 21, 2008 at 10:26 AM, Andi Kleen wrote: > > > Concrete suggestions please. > > > > I already spelled it out. Add a new program header entry, point it to > > a bit array large enough to cover all loadable segments. > > Ah that's easy, the program header is already supported in the kernel code > (PT_PRESENT_BITMAP) > > The additional SHDR is just there for easier testing/migration. > > > > It is not worth creating problems with this invalid extension just for > > You still didn't say why it was invalid. > > Anyways I disagree on the value of supporting old binaries. I believe > it is important. > > -Andi Why not stick the bitmap in an xattr? -- Nicholas Miell -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org