Hi Joerg,
It was disabled for a reason that does not pertain to
IOMMUv2 PC static counts (reading from the ICounter associated with the
selected bank/counter). Testing with perf shows expected results.
Thanks,
Steve
-----Original Message-----
From: Joerg Roedel [mailto:[email protected]]
Sent: Monday, January 28, 2013 8:29 AM
To: Kinney, Steven
Cc: Thomas Gleixner; Ingo Molnar; H. Peter Anvin; [email protected]; Bjorn
Helgaas; Greg Kroah-Hartman; Sebastian Andrzej Siewior; Myron Stowe; Hiroshi
DOYU; Stephen Warren; Jiri Kosina; Kukjin Kim; [email protected];
[email protected]; Peter Zijlstra; Paul Mackerras; Arnaldo
Carvalho de Melo; Thomas Renninger; Andi Kleen; Cyrill Gorcunov
Subject: Re: [PATCH 1/3] AMD x86 quirks: Quirk for enabling IOMMUv2 PC feature
On Mon, Jan 21, 2013 at 02:20:56PM -0600, Steven L. Kinney wrote:
> From: "Steven L. Kinney" <[email protected]>
>
> Original code base by Andreas Herrmann at AMD with minor changes.
Why is it safe to enable this feature when it was disabled by BIOS? Was it
disabled for no reason?
Joerg
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
