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Old Jan 14, 2018, 08:11 AM   #211
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It was really nice of intel to release CL while knowing about these security flaws.
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Old Jan 18, 2018, 05:10 PM   #212
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Poor bastards.


I will reiterate....good thing I bought a 8700k


Quote:
while the firmware updates are effective at mitigating exposure to the security issues, customers have reported more frequent reboots on firmware updated systems. As part of this, we have determined that similar behavior occurs on other products in some configurations, including Ivy Bridge-, Sandy Bridge-, Skylake-, and Kaby Lake-based platforms. We have reproduced these issues internally and are making progress toward identifying the root cause. In parallel, we will be providing beta microcode to vendors for validation by next week.
https://newsroom.intel.com/news/firm...enter-systems/



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So far the most annoying thing to me is my old 4770K in my server keeps ****ing rebooting.
Hang in there dude.
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Old Jan 19, 2018, 09:36 AM   #213
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Originally Posted by Mangler View Post
It was really nice of intel to release CL while knowing about these security flaws.
It was also nice of the CEO to dump his stock while knowing of these security flaws.

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Old Jan 19, 2018, 11:19 PM   #214
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I have a Skylake i5-6600k.

I've noticed a definite slowdown. I record OTA TV shows. I run Comskip to generate EDL files to skip commercials on the recordings. It's CPU intensive.

Before the update, I used to be able to run 4 instances of Comskip, watch a recording in Kodi, and browse the internet, and everything would be smooth. If I ran a 5th instance, I'd notice some choppy playback on the video, or choppy scrolling in the browser.

After the update, I can only run 3 instances of Comskip and the video in Kodi and browsing get really choppy.
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Old Jan 22, 2018, 06:25 PM   #215
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Old Jan 22, 2018, 07:39 PM   #216
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https://www.hardocp.com/news/2018/01...ips_into_intel

http://lkml.iu.edu/hypermail/linux/k...1.2/04628.html

So the jyst of the email is:

1.) Even with the patches applied its actually not working unless you enabled the fix manually which leads in to:

2.) The slow down is more severe once properly enabled then what we thought? LOL?
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Old Jan 22, 2018, 07:48 PM   #217
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Glad I held out on the 8700k. Now just waiting on Ryzen 2 benchmarks to seal the deal.
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Old Jan 23, 2018, 02:51 AM   #218
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Intel falls because of their own decisions and not because competition..If i remember correctly the roman empire the spark that fell the empire was also from inside.
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Old Jan 23, 2018, 07:36 AM   #219
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Fwiw - Linus doesn't like the fix.

https://techcrunch.com/2018/01/22/li...utter-garbage/

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The always outspoken Linus Torvalds, best known for his continuing work on the innermost code of Linux systems, has harsh words to say and accusations to level against Intel. His evaluation of Intel’s latest proposed fix for the Meltdown/Spectre issue: “the patches are COMPLETE AND UTTER GARBAGE.” As a potential line of inquiry, he suggests: “Has anybody talked to them and told them they are *******g insane?” (Asterisk his.)

These and other kind epithets are awarded by Torvalds in a public email chain between him and David Woodhouse, an engineer at Amazon in the U.K., regarding Intel’s solution as relating to the Linux kernel. The issue is (as far as I can tell as someone far out of their depth) a clumsy and, Torvalds argues, “insane” implementation of a fix that essentially does nothing while also doing a bunch of unnecessary things.
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Old Jan 23, 2018, 12:31 PM   #220
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Originally Posted by @md_Guy View Post
Microsoft’s statement suggests slowdowns could be more substantial than Intel previously indicated.

https://www.bloomberg.com/news/artic...w-some-servers




edit: MS blog:
https://cloudblogs.microsoft.com/mic...ndows-systems/
Is this a MS update? I haven't been offered anything AFAIK...
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Old Jan 23, 2018, 01:03 PM   #221
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Originally Posted by globalist View Post
Is this a MS update? I haven't been offered anything AFAIK...
The update has currently been pulled an there could be a new wave of MicroCode updates on the way as well.
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Old Jan 23, 2018, 01:04 PM   #222
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Old Jan 23, 2018, 02:08 PM   #223
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Originally Posted by Hapatingjaky View Post
The update has currently been pulled an there could be a new wave of MicroCode updates on the way as well.
So I've googled around and it seems the patch (at least for Win7 which Im running) was part of the Jan 4th security rollup:

https://support.microsoft.com/km-kh/...date-kb4056894

Turns out I did have this installed on my system, but just after I posted my question in this thread I was offered it again via WU, for some reason. So I installed it again and so far so good. Just hoping I won't see any significant slowdowns...
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Old Jan 23, 2018, 03:07 PM   #224
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Quote:
Originally Posted by globalist View Post
So I've googled around and it seems the patch (at least for Win7 which Im running) was part of the Jan 4th security rollup:

https://support.microsoft.com/km-kh/...date-kb4056894

Turns out I did have this installed on my system, but just after I posted my question in this thread I was offered it again via WU, for some reason. So I installed it again and so far so good. Just hoping I won't see any significant slowdowns...
The patch was pulled due to resets on certain system, then it spread from those certain systems to this new patch that has just been released.

Question is have you downloaded a new bios since your on Intel it requires Microcode+Windows Patch.
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Old Jan 23, 2018, 03:43 PM   #225
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Originally Posted by Hapatingjaky View Post
The patch was pulled due to resets on certain system, then it spread from those certain systems to this new patch that has just been released.

Question is have you downloaded a new bios since your on Intel it requires Microcode+Windows Patch.
My mobo is this one and there hasn't been a new BIOS since 2011, lol. I'm also on i7 Lynnfield if that makes any difference.

https://www.gigabyte.com/Motherboard...UD3R-rev-20#ov
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Old Jan 27, 2018, 01:26 PM   #226
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Originally Posted by globalist View Post
My mobo is this one and there hasn't been a new BIOS since 2011, lol. I'm also on i7 Lynnfield if that makes any difference.

https://www.gigabyte.com/Motherboard...UD3R-rev-20#ov
Heh I'm in almost exactly the same boat.

I wonder what percentage of mobos made in the last 10 years will get a bios update....
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Old Jan 27, 2018, 01:31 PM   #227
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They talked about that in a linus tech tips livestream, seems that z170 will be the cutoff point for the fix when it comes to mainstream motherboards.
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Old Jan 29, 2018, 06:45 PM   #228
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Old Jan 29, 2018, 07:23 PM   #229
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https://www.hardocp.com/news/2018/01...ltdown_spectre

Apple's Response : We're Apple; Malware, Viruses ETC don't pertain to us so go away.

Amazon's Response : Why the **** are you contacting us?

Intel's Response : Its all AMD's fault, hey what's that over there?

AMD's Resposne : We've done internal testing and find that none of this effects our processor line. It will need to be fixed on the OS level.

Microsoft's Response : We're waiting on Intel to stop ****ing everything up.

Google's Response : Its not our fault, we gave Intel the information, they waited to sell off stock before they did anything about it.

ARM's Response : Waiting on Intel to fix our problem.
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Old Jan 29, 2018, 07:30 PM   #230
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I might actually watch that hearing, just for the lolz. Congress asking questions about something none of them are even remotely close to being able to comprehend.

Before the hearing... "Siri, what's Spectre?"


I think you pretty much nailed the responses there Hapa.
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Old Jan 29, 2018, 11:26 PM   #231
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Quote:
Originally Posted by Mangler View Post
They talked about that in a linus tech tips livestream, seems that z170 will be the cutoff point for the fix when it comes to mainstream motherboards.
He was a bit salty that none of his recently purchased X99 video editing workstation boards will receive BIOS updates. If he had bought proper business class ThinkStation/Precision workstations instead of consumer grade crap he would not have that problem.
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Old Jan 30, 2018, 01:28 PM   #232
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Hate to get all technical but I have been doing a lot of reading about this and would really like to get conformation/corrected by somebody more knowledgeable on the subject.

Spectre V1:

Malicious code directly speculates into user memory (unsure if this requires manipulation of the BTB or if it is accomplished with only a mispredicted branch? I believe it is the latter)
It is remotely exploitable but would be difficult to directly target specific data, ie: we know there is a password stored in the web browser's memory space, but we don't know exactly where.

Spectre V2:

Malicious code manipulates/poisons the branch target buffer and branch history which actually allows an attacker to point the cpu to an instruction that the attacker has placed in memory to be speculatively executed. The attack can also involve system calls so that the speculative execution can be performed from an elevated process and protected memory can be read without triggering a page fault. Through process that i don't quite understand, the exact memory addresses of the kernel/vmhost etc can be deduced.

Actually taking advantage of this exploit requires advanced knowledge of the branch prediction behavior of the specific CPU architecture being targeted. An attack developed to work on a haswell CPU won't work on a skylake CPU due to skylake having deeper branch history. It also requires intimate knowledge of the target process.

V2 is theoretically remotely exploitable but would require realtime access to the output of the malicious code to really be effective. Difficulty would increase if the target CPU doesn't support hyper threading.


Meltdown is functionally very similar to spectre V1 except that it is kernel memory that is being speculated into not user memory. Fixed by not mapping kernel memory into user address space.

Again not trying to post this as fact, just curious if I am understanding it right. Another thing I am not clear on is how the data is being read out, in particular on a CPU without hyper threading.
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Old Jan 30, 2018, 02:55 PM   #233
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Intel also shared details of the exploits with China months before notifying the NSA. Trying to get back in bed with the Chinese after major Baidu AMD server farm purchase and VIA's Chinese indigenous x86 chip?
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Old Jan 31, 2018, 02:31 AM   #234
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My CPU isn't even on that PDF list.
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Old Feb 3, 2018, 09:12 PM   #235
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updated my bios. zero loss in performance here.
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Old Feb 3, 2018, 10:15 PM   #236
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updated my bios. zero loss in performance here.
That's because your system is already slow.
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Old Feb 3, 2018, 10:59 PM   #237
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Originally Posted by Hapatingjaky View Post
That's because your system is already slow.
Do you even AVX-512, bro?
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Old Feb 3, 2018, 11:22 PM   #238
Hapatingjaky
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Originally Posted by GTwannabe View Post
Do you even AVX-512, bro?
I AVX-1024 Bro

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Old Feb 25, 2018, 07:34 PM   #239
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Originally Posted by Mangler View Post
They talked about that in a linus tech tips livestream, seems that z170 will be the cutoff point for the fix when it comes to mainstream motherboards.
Thanks for the notice. I appear to be about 6 years behind... :/
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Old Feb 26, 2018, 12:54 PM   #240
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So is this 30% performance hit real? From what I understand of the situation, I believe the OS patch has been aplied on my system but I'm not noticing any performance issues... With that said, not sure if my CPU (Lynnfield below in sig) is even affected by the bugs to begin with.
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