In message: <20091104055811.gy1...@hoeg.nl>
Ed Schouten writes:
: Hi Attilio,
:
: * Attilio Rao wrote:
: > Opteron rev E family of processor expose a bug where, in very rare
: > ocassions, memory barriers semantic is not honoured by the hardware
: > itself. As a result, some random b
On Wed, Nov 04, 2009 at 05:06:36PM +0100, Attilio Rao wrote:
> 2009/11/4, Kostik Belousov :
> > On Wed, Nov 04, 2009 at 01:49:41PM +0100, Attilio Rao wrote:
> > > 2009/11/4 Ed Schouten :
> > > > Hi Attilio,
> > > >
> > > > * Attilio Rao wrote:
> > > >> Opteron rev E family of processor expose a bu
On Wednesday 04 November 2009 11:15:28 am Attilio Rao wrote:
> 2009/11/4, Dag-Erling Smørgrav :
> > Attilio Rao writes:
> > > Dag-Erling Smørgrav writes:
> > > > According to the reference you gave, OpenSolaris has a workaround for
> > > > this issue. Perhaps we should adopt it?
> > > IIRC, base
2009/11/4, Dag-Erling Smørgrav :
> Attilio Rao writes:
> > Dag-Erling Smørgrav writes:
> > > According to the reference you gave, OpenSolaris has a workaround for
> > > this issue. Perhaps we should adopt it?
> > IIRC, based on what I readed on-line, it could be still a WARNING msg,
> > but I di
On Wed, 4 Nov 2009, Attilio Rao wrote:
I think the warning is a good idea, but I don't think we should include the
URL. We have no control over where it points or what information it will
contain in the future. Is there a hardware vendor errata number/document
that we can point at instead,
Attilio Rao writes:
> Dag-Erling Smørgrav writes:
> > According to the reference you gave, OpenSolaris has a workaround for
> > this issue. Perhaps we should adopt it?
> IIRC, based on what I readed on-line, it could be still a WARNING msg,
> but I didn't double-check for it.
Uh, apparently, it
2009/11/4, Kostik Belousov :
> On Wed, Nov 04, 2009 at 01:49:41PM +0100, Attilio Rao wrote:
> > 2009/11/4 Ed Schouten :
> > > Hi Attilio,
> > >
> > > * Attilio Rao wrote:
> > >> Opteron rev E family of processor expose a bug where, in very rare
> > >> ocassions, memory barriers semantic is not hon
2009/11/4, Dag-Erling Smørgrav :
> Attilio Rao writes:
> > Log:
> > Opteron rev E family of processor expose a bug where, in very rare
> > ocassions, memory barriers semantic is not honoured by the hardware
> > itself. As a result, some random breakage can happen in uninvestigable
> > ways
2009/11/4, Robert Watson :
>
> On Wed, 4 Nov 2009, Attilio Rao wrote:
>
> > + if (CPUID_TO_FAMILY(cpu_id) == 0xf && CPUID_TO_MODEL(cpu_id) >=
> 0x20 &&
> > + CPUID_TO_MODEL(cpu_id) <= 0x3f) {
> > + printf("WARNING: This architecture revision has known SMP
> "
> > +
Attilio Rao writes:
> Log:
> Opteron rev E family of processor expose a bug where, in very rare
> ocassions, memory barriers semantic is not honoured by the hardware
> itself. As a result, some random breakage can happen in uninvestigable
> ways (for further explanation see at the content
On Wed, 4 Nov 2009, Attilio Rao wrote:
+ if (CPUID_TO_FAMILY(cpu_id) == 0xf && CPUID_TO_MODEL(cpu_id) >= 0x20 &&
+ CPUID_TO_MODEL(cpu_id) <= 0x3f) {
+ printf("WARNING: This architecture revision has known SMP "
+ "hardware bugs which may cause ran
On Wed, Nov 04, 2009 at 01:49:41PM +0100, Attilio Rao wrote:
> 2009/11/4 Ed Schouten :
> > Hi Attilio,
> >
> > * Attilio Rao wrote:
> >> Opteron rev E family of processor expose a bug where, in very rare
> >> ocassions, memory barriers semantic is not honoured by the hardware
> >> itself. As a res
2009/11/4 Ed Schouten :
> Hi Attilio,
>
> * Attilio Rao wrote:
>> Opteron rev E family of processor expose a bug where, in very rare
>> ocassions, memory barriers semantic is not honoured by the hardware
>> itself. As a result, some random breakage can happen in uninvestigable
>> ways (for further
Hi Attilio,
* Attilio Rao wrote:
> Opteron rev E family of processor expose a bug where, in very rare
> ocassions, memory barriers semantic is not honoured by the hardware
> itself. As a result, some random breakage can happen in uninvestigable
> ways (for further explanation see at the content o
Author: attilio
Date: Wed Nov 4 01:32:59 2009
New Revision: 198868
URL: http://svn.freebsd.org/changeset/base/198868
Log:
Opteron rev E family of processor expose a bug where, in very rare
ocassions, memory barriers semantic is not honoured by the hardware
itself. As a result, some random b
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