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Fix for Intel Core2 processors

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Microsoft release fix for all new Intel processors - Core 2 Duo E4000/E6000, Core 2 Quad Q6600, Core 2 Xtreme QX6800, QX6700 and QX6800 desktop processors, Core 2 Duo T5000 and T7000 mobile processors and Xeon 3000, 3200, 5100 i 5300 server processors.

http://support.microsoft.com/?kbid=936357#appliesto

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Quote[/b] ]improves the reliability of systems that use Intel processors

I own a duo-core, since when is reliability a problem ?

I haven't got any problems under winXP.

Is this related to arma ?

Monk.

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<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Code Sample </td></tr><tr><td id="CODE">A COUPLE OF WEEKS ago, we heard that Dell was dealing with a certain situation considering Intel dual-core MCW and quad-core KC architecture, and that the company was releasing urgent BIOS and microcode versions for its line up....

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Microsoft release fix for all new Intel processors - Core 2 Duo E4000/E6000, Core 2 Quad Q6600, Core 2 Xtreme QX6800, QX6700 and QX6800 desktop processors, Core 2 Duo T5000 and T7000 mobile processors and Xeon 3000, 3200, 5100 i 5300 server processors.

http://support.microsoft.com/?kbid=936357#appliesto

E6000 is different from E6300?  I own an E6300 so am I affected or not?  In either case I really don't notice any problems. What exactly are the symptoms of this 'reliability' problem? And will this update come with my windows autoupdate?

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A trick to update wga ? wink_o.gif with those informations.. i will never install this.. fix smile_o.gif

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WGA? where ? ... stop misleading others ...

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lol DarkGiver, if there is a wga update the will mark it as wga update

MS is not as evil as EA(non do they have that kind of balls) who put Ad ware into your fullprice game soft and say thats a "feature"

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Quote[/b] ]Anyway, if you have a Core CPU based machine, go to the link below to download the update.

As opposed to a banana for computer?

rofl.gif

I never update unless I see the results in many forums. A good place to check into the validity of these updates is places like HardOCP, NCIX.com's Forums and other forums. Forums are ground level, "in the trenches" opinions on the real issues. Definitely recommended for anyone and everyone!

smile_o.gif

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Hmmmm, since installing this update my rig is running 6deg cooler in idle.

Down from 50deg to 44deg....

Wasn't expecting this as a side-effect... if related at all.

Happy anyway biggrin_o.gif

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I think this is very important fix for server machines. More info:

<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Code Sample </td></tr><tr><td id="CODE">List: openbsd-misc

Subject: Intel Core 2

From: Theo de Raadt <deraadt () cvs ! openbsd ! org>

Date: 2007-06-27 17:08:16

Message-ID: 200706271708.l5RH8GkK024621 () cvs ! openbsd ! org

[Download message RAW]

Various developers are busy implimenting workarounds for serious bugs

in Intel's Core 2 cpu.

These processors are buggy as hell, and some of these bugs don't just

cause development/debugging problems, but will *ASSUREDLY* be

exploitable from userland code.

As is typical, BIOS vendors will be very late providing workarounds /

fixes for these processors bugs. Some bugs are unfixable and cannot

be worked around. Intel only provides detailed fixes to BIOS vendors

and large operating system groups. Open Source operating systems are

largely left in the cold.

Full (current) errata from Intel:

http://download.intel.com/design/processor/specupdt/31327914.pdf

- We bet there are many more errata not yet announced -- every month

this file gets larger.

- Intel understates the impact of these erraata very significantly.

Almost all operating systems will run into these bugs.

- Basically the MMU simply does not operate as specified/implimented

in previous generations of x86 hardware. It is not just buggy, but

Intel has gone further and defined "new ways to handle page tables"

(see page 58).

- Some of these bugs are along the lines of "buffer overflow"; where

a write-protect or non-execute bit for a page table entry is ignored.

Others are floating point instruction non-coherencies, or memory

corruptions -- outside of the range of permitted writing for the

process -- running common instruction sequences.

- All of this is just unbelievable to many of us.

An easier summary document for some people to read:

http://www.geek.com/images/geeknews/2006Jan/core_duo_erratafull.gif

Note that some errata like AI65, AI79, AI43, AI39, AI90, AI99 scare

the hell out of us. Some of these are things that cannot be fixed in

running code, and some are things that every operating system will do

until about mid-2008, because that is how the MMU has always been

managed on all generations of Intel/AMD/whoeverelse hardware. Now

Intel is telling people to manage the MMU's TLB flushes in a new and

different way. Yet even if we do so, some of the errata listed are

unaffected by doing so.

As I said before, hiding in this list are 20-30 bugs that cannot be

worked around by operating systems, and will be potentially

exploitable. I would bet a lot of money that at least 2-3 of them

are.

For instance, AI90 is exploitable on some operating systems (but not

OpenBSD running default binaries).

At this time, I cannot recommend purchase of any machines based on the

Intel Core 2 until these issues are dealt with (which I suspect will

take more than a year). Intel must be come more transparent.

(While here, I would like to say that AMD is becoming less helpful day

by day towards open source operating systems too, perhaps because

their serious errata lists are growing rapidly too).

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Sorry for my bad joke about wga wink_o.gif

Thix patch is not the first, here something i found about a first patch out in april 2007 :

" Around April 10th, 2007, Intel released a microcode update (BIOS flash to the rest of us) so resolve several major issues with how Intel Core 2 series processors operate.

Intel has provided a microcode update as a critical software fix. This Intel microcode update addresses an improper Translation Lookaside Buffer (TLB) invalidation that may result in unpredictable system behavior such as system hangs or incorrect data. OEM's are making available a system BIOS upgrade that integrates a new version of this Intel microcode to address this potential but extremely rare issue. While the occurrence of this issue is extremely rare, OEM's strongly recommends upgrading the system BIOS to an updated version. Intel has indicated that the microcode update has no known measurable performance impact and provides a complete and comprehensive resolution to this issue.

The issues can affect any workstation that uses Intel Core2 Duo desktop processor E4000 and E6000 sequences, Intel Core2 Quad desktop processor Q6600 and Intel Core2 Extreme processors X6800 and QX6700 processors.

While the implications of the issue are difficult to quantify, any of the following symptoms can occur:

The system may stop responding to keyboard or mouse input.

A system operating in a Microsoft Windows environment may generate a blue screen.

A system operating in a Linux environment may generate a kernel panic.

Thanks to Guest for disclosing this information in General Hardware.

Watch for BIOS updates for your motherboards! "

So the new patch certainly fix those issues too...

Strange...

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I wouldn't install the windows version anyway. Unless you have those symptoms, just wait for the BIOS update.

BIOS update will effect everything you run, so if you had to reload windows or use another OS, you're out of luck with that MS patch.

While this microcode addresses more than TLB, there are some security concerns with it. Although no PoC exist yet.

On another side note, you can download the microcode for linux here:

http://www.urbanmyth.org/microcode/

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linux its not wga to download is different way of legal confirmation on theirs website

update package itself contain no wga at all ...

anyway more and more i read these various core arch bugs more i think some are related to issues i encoutered between customers wink_o.gif

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...And will this update come with my windows autoupdate?

Go in C:\WINDOWS\$hf_mig$ and if u have KB936357 folder u alredy update welcome.gif

@Dwarden ppl link is for M$ not linux, look whom i quote, and u can close this topic goodnight.gif

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...And will this update come with my windows autoupdate?

Go in C:\WINDOWS\$hf_mig$ and if u have KB936357 folder u alredy update  welcome.gif

@Dwarden ppl link is for M$ not linux, look whom i quote, and u can close this topic  goodnight.gif

R u saying this came as part of autoupdate?

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