Skip site navigation (1)Skip section navigation (2)
Date:      Tue, 03 Jul 2007 11:20:53 +0200
From:      Alexander Leidinger <Alexander@Leidinger.net>
To:        Chuck Swiger <cswiger@mac.com>, stas@FreeBSD.org
Cc:        Takeharu KATO <takeharu1219@ybb.ne.jp>, Suleiman Souhlal <ssouhlal@FreeBSD.org>, current@FreeBSD.org
Subject:   Re: [PATCH] Machine Check Architecture on amd64
Message-ID:  <20070703112053.azox7spyw4oog8wk@webmail.leidinger.net>
In-Reply-To: <4689295F.10109@mac.com>
References:  <46806B3E.2060701@FreeBSD.org> <4688EBC2.8070703@ybb.ne.jp> <27D8F2CD-156E-4962-A187-63E42CAE2B6F@FreeBSD.org> <4689295F.10109@mac.com>

next in thread | previous in thread | raw e-mail | index | archive | help
Quoting Chuck Swiger <cswiger@mac.com> (from Mon, 02 Jul 2007 12:35:43 -0400=
):

> Suleiman Souhlal wrote:
>> On Jul 2, 2007, at 5:12 AM, Takeharu KATO wrote:
>>> Apparently, the patch does not have memory scrub facility.
>>> Do you have a plan to implement the memory scrub facility like  =20
>>> solaris does?
>>>
>>> P.S. In fact, I was also trying to implement the MCE facility, so  =20
>>> I am interesting to your patch.
>>
>> While I don't know about Intel CPUs, K8 CPUs from AMD have a  =20
>> hardware DRAM/data cache scrubber, so I didn't bother implementing  =20
>> it, and I don't really plan to, at least in the near future. It  =20
>> should, however, be pretty easy to implement.
>
> Agreed, at least some BIOSes have an advanced memory tuning page
> somewhere which lets you enable or disable the BG cache memory
> scrubbing on AMD64 chips.
>
> I'm at least as interested in getting FreeBSD-level support for loading
> CPU microcode into a running system, as I've got a bunch of remote HP
> or Dell PE boxes floating around in racks somewhere.  Getting them to
> boot into a DOS/Windows env to reflash their BIOS or update something
> like a Intel or Broadcomm NIC to disable their remote management or
> whatever is eating traffic to be more of a hassle than a convenience
> even when one is not dealing with remote systems.

less /usr/ports/sysutils/devcpu/pkg-descr

Note, I'm not able to load microcode on my Athlon XP yet, Stanislav =20
would probably appreciate some help with this.

Bye,
Alexander.

--=20
There is a vast difference between the savage and civilized man, but it
is never apparent to their wives until after breakfast.
=09=09-- Helen Rowland

http://www.Leidinger.net    Alexander @ Leidinger.net: PGP ID =3D B0063FE7
http://www.FreeBSD.org       netchild @ FreeBSD.org  : PGP ID =3D 72077137



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20070703112053.azox7spyw4oog8wk>