... wrote: > This patchkit is an experimental optimization I played around with > some time ago. > > This is more a prototype still, but I wanted to push it out > so that other people can play with it. > > The basic idea is ...

linux-kernel - Andrew Morton - Mar 18 2008 - 03:36

... .org> wrote: > > > This patchkit is an experimental optimization I played around with > > some time ago. > > > > This is more a prototype still, but I wanted to push it out > > so that other people can play with it. > > > > The basic idea is ...

linux-kernel - Andi Kleen - Mar 18 2008 - 10:18

... org> wrote: > > > > > This patchkit is an experimental optimization I played around with > > > some time ago. > > > > > > This is more a prototype still, but I wanted to push it out > > > so that other people can play with it. > > > > > > The ...

linux-kernel - Andrew Morton - Mar 18 2008 - 12:57

... bitmap in your scheme? umm, BITMAP_TRAINING_RUN=1 /usr/lib64/firefox-2.0.0.12/firefox-bin will write the bitmap to ~/.bitmaps/usr/lib64/firefox-2.0.0.12/firefox-bin ? if it proves useful, build it all into ...

linux-kernel - Andrew Morton - Mar 19 2008 - 05:04

... not a friend of unnecessary complexity. In the end > complexity hurts you, no matter if it is in ring 3 or ring 0. There is no complexity here. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to ...

linux-kernel - Andrew Morton - Mar 18 2008 - 13:44

... not a friend of unnecessary complexity. In the end complexity hurts you, no matter if it is in ring 3 or ring 0. -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org ...

linux-kernel - Andi Kleen - Mar 18 2008 - 13:20

... not a friend of unnecessary complexity. In the end > > complexity hurts you, no matter if it is in ring 3 or ring 0. > > There is no complexity here. I have my doubts on that if you consider update too. -Andi > -- To unsubscribe from this ...

linux-kernel - Andi Kleen - Mar 19 2008 - 04:32

... > I did some work on that many years ago and I do recall that it > helped, but I forget how much. I wrote such a patch ages ago as well. Frankly, based upon my experiences then and what I know now, I think it's a lose to do this. Better to 1 ...

linux-kernel - David Miller - Mar 19 2008 - 20:09

... maybe). But if a kernel patch is really needed to implement ... /Prefetch There are even kernel patches: http://code.google.com/p/ ... /tags/soc2007-end/trunk/kernel-patches/2.6.22/submitted/0001- ... /tags/soc2007-end/trunk/kernel-patches/2.6.22/submitted/0002- ...

linux-kernel - Diego Calleja - Mar 19 2008 - 20:15

... everything according to > rules. If you just somehow magically patch some new data structure in > this will break things. Can ... the entire Yes that is what the "mmap_flush" hack (last patch does) I actually have some numbers on a older kernel and ...

linux-kernel - Andi Kleen - Mar 20 2008 - 05:00

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. It is not

linux-kernel - Ulrich Drepper - Mar 22 2008 - 00:36

On Fri, Mar 21, 2008 at 10:26 AM, Andi Kleen wrote: > When would that time be? I cannot think of a single heuristic that would > work for both "/bin/true" and a OpenOffice start. In both cases the stable state is reached after

linux-kernel - Ulrich Drepper - Mar 22 2008 - 00:38

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

linux-kernel - Andi Kleen - Mar 22 2008 - 03:17

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

linux-kernel - Nicholas Miell - Mar 22 2008 - 03:24

> Why not stick the bitmap in an xattr? xattrs are too small for potentially large binaries and a mess to manage (a lot of tools don't know about them) -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body

linux-kernel - Andi Kleen - Mar 22 2008 - 05:10

> Is this good idea? Attacker can send you binary with the bitmap > inverted, it is now slow on your system and signature matches. The first run will fix up any missing bits in the bitmap. Right now it cannot get rid of unnecessary pages though

linux-kernel - Andi Kleen - Mar 23 2008 - 13:08

On Sat, Mar 22, 2008 at 2:10 AM, Andi Kleen wrote: > > Why not stick the bitmap in an xattr? > > xattrs are too small for potentially large binaries and a mess to manage > (a lot of tools don't know about them) It does not

linux-kernel - Ulrich Drepper - Mar 24 2008 - 00:20

On Sun, 2008-03-23 at 21:20 -0700, Ulrich Drepper wrote: > On Sat, Mar 22, 2008 at 2:10 AM, Andi Kleen wrote: > > > Why not stick the bitmap in an xattr? > > > > xattrs are too small for potentially large binaries and a mess

linux-kernel - Nicholas Miell - Mar 24 2008 - 01:16

First emacs is still a rather small executable, there are much larger ones around. > The limit is filesystem dependent -- I think ext2/3s is something like > 4k total for attribute names and values per inode. That large xattrs tend to be out of

linux-kernel - Andi Kleen - Mar 24 2008 - 01:26

On Sun, Mar 23, 2008 at 10:16 PM, Nicholas Miell wrote: > The limit is filesystem dependent -- I think ext2/3s is something like > 4k total for attribute names and values per inode. > > That's more than enough space for the

linux-kernel - Ulrich Drepper - Mar 24 2008 - 15:42