On Sun, May 15, 2005 at 03:51:05PM +0200, Mikulas Patocka wrote:
>
>
> On Sun, 15 May 2005, Andi Kleen wrote:
>
> > On Fri, May 13, 2005 at 09:16:09PM +0200, Diego Calleja wrote:
> > > El Fri, 13 May 2005 20:03:58 +0200,
> > > Andi Kleen <[email protected]> escribi?:
> > >
> > >
> > > > This is not a kernel problem, but a user space problem. The fix
> > > > is to change the user space crypto code to need the same number of cache line
> > > > accesses on all keys.
> > >
> > >
> > > However they've patched the FreeBSD kernel to "workaround?" it:
> > > ftp://ftp.freebsd.org/pub/FreeBSD/CERT/patches/SA-05:09/htt5.patch
> >
> > That's a similar stupid idea as they did with the disk write
> > cache (lowering the MTBFs of their disks by considerable factors,
> > which is much worse than the power off data loss problem)
> > Let's not go down this path please.
>
> What wrong did they do with disk write cache?
They turned it off by default, which according to disk vendors
lowers the MTBF of your disk to a fraction of the original value.
I bet the total amount of valuable data lost for FreeBSD users because
of broken disks is much much bigger than what they gained from not losing
in the rather hard to hit power off cases.
-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
