KVR Audio

Kraznet · Post by **Kraznet** » Wed Jan 03, 2018 3:35 pm

The tool says my Intel i7 4770K isn't vulnerable.

PapaLazarou · Post by **PapaLazarou** » Wed Jan 03, 2018 5:04 pm

I think the tool is to check for the recently publicised Intel Management Engine vulnerability.
https://www.theregister.co.uk/2017/11/2 ... are_flaws/
https://security-center.intel.com/advis ... geid=en-fr

It's a different problem from the kernel memory issue, which sounds like it's a fundamental processor design issue and can't be patched up with a microcode update.

EDIT: Interesting... Intel stock down while AMD rallies - https://www.marketwatch.com/story/intel ... 2018-01-03

Cinebient · Post by **Cinebient** » Wed Jan 03, 2018 5:09 pm

PapaLazarou wrote:I think the tool is to check for the recently publicised Intel Management Engine vulnerability.
https://www.theregister.co.uk/2017/11/2 ... are_flaws/
https://security-center.intel.com/advis ... geid=en-fr

It's a different problem from the kernel memory issue, which sounds like it's a fundamental processor design issue and can't be patched up with a microcode update.

EDIT: Interesting... Intel stock down while AMD rallies - https://www.marketwatch.com/story/intel ... 2018-01-03

Just a dirty trick from the share holders

But really, if that all is true maybe finally time to leave that Intel Imperium.

EvilDragon · Post by **EvilDragon** » Wed Jan 03, 2018 5:47 pm

Kraznet wrote:The tool says my Intel i7 4770K isn't vulnerable.

It IS vulnerable (all Intel CPUs from the past 10 years are). It just supports PCID, so performance degradation after the security update served by the OS will be minimal for you.

Kraznet · Post by **Kraznet** » Wed Jan 03, 2018 5:51 pm

EvilDragon wrote:
Kraznet wrote:The tool says my Intel i7 4770K isn't vulnerable.
It IS vulnerable (all Intel CPUs from the past 10 years are). It just supports PCID, so performance degradation after the security update served by the OS will be minimal for you.

Thanks clarifying that's a relief

yul · Post by **yul** » Wed Jan 03, 2018 5:59 pm

I know then MS patch isn't out yet (or is it?) and fear it will be silently rolled out.

Will I be able to opt out of the update on W10 in your opinion?

Does Windows Update allow the user to visualise if the patch is there or not?

I have turned off updating on my PC since day 1 and would like to be able to decide.

I do need to run some updates soon though.

Thx

EvilDragon · Post by **EvilDragon** » Wed Jan 03, 2018 6:02 pm

You won't be able to opt out, if you have W10 Pro you can defer the update for up to 30 days, then pause updates for 35 more days, then you'll have to update it.

In online world, security trumps performance.

sprnva · Post by **sprnva** » Wed Jan 03, 2018 6:03 pm

I hadn't read into this enough and thought it was a result of the ME bug. I did a quick search for the 3930k in my DAW and it seems to support PCID so I guess that's good news.

yul · Post by **yul** » Wed Jan 03, 2018 6:17 pm

sprnva wrote:I hadn't read into this enough and thought it was a result of the ME bug. I did a quick search for the 3930k in my DAW and it seems to support PCID so I guess that's good news.

To EvilDragon's earlier post, this won't matter if the patch is pushed into everyone's PC unless that patch is selective (I would be surprised)..

sprnva · Post by **sprnva** » Wed Jan 03, 2018 6:20 pm

I'm sure the updates will be pushed, but from what I gather it will have a lower performance impact on CPUs that support PCID.

lalo · Post by **lalo** » Wed Jan 03, 2018 6:26 pm

...just waiting for parts for a new DAW PC ...and i've ordered a i7 7700K

Cinebient · Post by **Cinebient** » Wed Jan 03, 2018 6:43 pm

I hope really it is all just dramatized because when i think in a worst case i get a new macbook pro (which i wanted to buy soon) with -30% performance, it´s useless compared to my current machine.
Lol, now i believe that iPads can replace a notebook.
Intel is slowing down the whole thing since years and now they let us go 2 steps back

But i hope still it´s all more theory and just fake news.

EvilDragon · Post by **EvilDragon** » Wed Jan 03, 2018 6:57 pm

It's not a fixed -30% performance decrease. That one will affect virtual machine users the most. Do you use virtual machines? Then don't worry that much. 5% is the lowest stated perfromance decrease. Gaming is not terribly affected, for example. Audio drivers, though, might be. We'll need to wait for benchmarks after the fix is rolled out on Windows (for macOS, that's already in 10.3.2.)

This is not fake news, it's not a theory. The bug is real, and the fix needed to do it software-side (as opposed to fixing it on the CPU itself) has sideeffects. Newer CPUs (Coffee Lake and onwards) don't have the bug at all. CPUs that have PCID (Process-Context Identifiers instruction) will have a reduced performance hit.

nordickvr · Post by **nordickvr** » Wed Jan 03, 2018 7:09 pm

EvilDragon wrote:...(for macOS, that's already in 10.3.2.)...

Talking about Logic?
Sorry, I may have missed something here.

EvilDragon · Post by **EvilDragon** » Wed Jan 03, 2018 7:16 pm

The kernel fix for macOS that works around this bug in Intel CPUs is in macOS 10.3.2. That's what I said.

'Kernel memory leaking' Intel processor -- a serious cpu bug!?!