Hello!
Attached patch enhances v2 patch at [1] to disable selfsnoop with a
kernel command line parameter. The feature is also disabled on all
processors earlier than Core 2 due to Pentium-M errata.
I have investigated the erratas in this area and documented the one
found in the source.
The patch was tested on 4 core i7 (8 threads) and there were no
problems at all with the patched kernel.
[1] http://lkml.org/lkml/2009/4/8/508
Signed-off-by: Uros Bizjak <[email protected]>
On Sun, Nov 14, 2010 at 7:33 PM, Uros Bizjak <[email protected]> wrote:
> Hello!
>
> Attached patch enhances v2 patch at [1] to disable selfsnoop with a
> kernel command line parameter. The feature is also disabled on all
> processors earlier than Core 2 due to Pentium-M errata.
>
> I have investigated the erratas in this area and documented the one
> found in the source.
>
> The patch was tested on 4 core i7 (8 threads) and there were no
> problems at all with the patched kernel.
Also, I'd like to point out that similar change was introduced in
FreeBSD as part of r195749 in July 2009, see [1].
[1] http://svn.freebsd.org/viewvc/base?view=revision&revision=195749
Uros.