Re: [Xen-devel] xen.git branch reorg / success with 2.6.30-rc3 pv_ops dom0

[Dulloor <dulloor@xxxxxxxxx>]

Please check the other thread titled "pvops bug". I ran into issues without HT (on a core-2 quad machine). My crude fix as well as Ian's crude patch, both serializing unpin pte call avoids crash. I can look into it once I find time. If you have any clue, I can try earlier.

-dulloor

On Tue, Jun 16, 2009 at 3:31 PM, Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:

On 06/16/09 03:35, Ian Campbell wrote:

Interesting in the light of a comment from Ingo Molnar this morning on
LKML:
 

Plus this system is an old P4 HyperThreading dual-socket system:
pretty much the only thing HyperThreading is good for on that box is
finding SMP races: that CPU can (and will) yield between
hyperthreads on arbitrary instruction boundaries - opening up races
wide open.
   

Yes, I was wondering if HT could be a factor here.  My test server is HT, but I run it 64-bit...

   J

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