svn commit: r199067 - in head/sys: amd64/amd64 i386/i386
Bjoern A. Zeeb
bzeeb-lists at lists.zabbadoz.net
Thu Nov 12 11:40:07 UTC 2009
On Mon, 9 Nov 2009, Jun Kuriyama wrote:
Hi,
> Author: kuriyama
> Date: Mon Nov 9 02:54:16 2009
> New Revision: 199067
> URL: http://svn.freebsd.org/changeset/base/199067
>
> Log:
> - Add hw.clflush_disable loader tunable to avoid panic (trap 9) at
> map_invalidate_cache_range() even if CPU is not Intel.
> - This tunable can be set to -1 (default), 0 and 1. -1 is same as
> current behavior, which automatically disable CLFLUSH on Intel CPUs
> without CPUID_SS (should be occured on Xen only). You can specify 1
> when this panic happened on non-Intel CPUs (such as AMD's). Because
> disabling CLFLUSH may reduce performance, you can try with setting 0
> on Intel CPUs without SS to use CLFLUSH feature.
I wasn't able to boot dual Xeon machines anymore.
svn merge -c -199067 $FBDSVN/head/sys sys
fixed this problem.
--
Bjoern A. Zeeb It will not break if you know what you are doing.
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