Messages in this thread | | | Date | Sun, 15 May 2005 16:52:42 +0200 | From | Tomasz Torcz <> | Subject | Re: Hyper-Threading Vulnerability |
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On Sun, May 15, 2005 at 04:12:07PM +0200, Andi Kleen wrote: > > > > 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.
Aren't I/O barriers a way to safely use write cache?
-- Tomasz Torcz "God, root, what's the difference?" zdzichu@irc.-nie.spam-.pl "God is more forgiving."
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