svn commit: r305722 - head/sys/x86/x86

[Konstantin Belousov]

On Tue, Sep 13, 2016 at 09:21:25AM +0800, Sepherosa Ziehau wrote:
> Still didn't find anything wrong with this tunable set.
Hm, did you have DMAR globally enabled ?  I.e. did you get messages
about dmar attachment, and then reports about dmar routing interrupts, like
msi: Assigning MSI-X IRQ 264 to local APIC 4 vector 51
dmar1: programming irte[5] rid 0xf078 high 0x4f078 low 0x400330001
?

Ok, I tested this on my box.  Indeed, this mutex (now sx) seems to not
participate there.  Thanks.