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Old 10th January 2018
gpatrick gpatrick is offline
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This is why I have for the longest time been saying that Linux/x86 is a bad thing to have take over the world. There should and need to be more options than just Linux and just x86_64.

The world still needs mainframes and it still needs AIX and Solaris. The world still needs Z, POWER, SPARC.
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Old 11th January 2018
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Quote:
Originally Posted by gpatrick View Post
This is why I have for the longest time been saying that Linux/x86 is a bad thing to have take over the world. There should and need to be more options than just Linux and just x86_64.

The world still needs mainframes and it still needs AIX and Solaris. The world still needs Z, POWER, SPARC.
The world needs an open source CPU.
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Old 11th January 2018
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Fujitsu has published a list of affected machines which includes some affected Sparc-Models:
Fujitsu SPARC M12-1/M12-2/M12-2S and M10-1/M10-4/M10-4S

https://sp.ts.fujitsu.com/dmsp/Publi...u-products.pdf
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Old 14th January 2018
e1-531g e1-531g is offline
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https://marc.info/?l=openbsd-cvs&m=151570987406841&w=2
Quote:
Log message:
Update the Intel microcode once the root filesystem has been mounted.
This depends on the intel-firmware package that contains newer Intel
microcode which will be installed automatically by fw_update(1).

The update should happen much earlier since updating the microcode can
add or remove not only feature flags but also whole features. For now
only update feature flags that are relevant to Spectre.
<Edit>
https://marc.info/?l=openbsd-tech&m=151588857304763&w=2
Quote:
Patrick and others commited amd64 Intel cpu microcode update code
over the last few days. The approach isn't perfect, but it is good
enough for a start. I want to explain the situation.

When you fw_update, you'll get the firmware files.

Upon a reboot, it will attempt to update the microcode on your cpus.
Maybe there isn't a new microcode.
</Edit>

It is worth to note that a lot of sources claims that updated microcode contains flaws.
https://support.lenovo.com/pl/pl/solutions/len-18282
Quote:
Withdrawn Broadwell & Haswell CPU Microcode Update: Intel provides the CPU microcode updates required to address Variant 2, which manufacturers like Lenovo then incorporate into their UEFI firmware. Intel has notified manufacturers of quality issues in the initial Broadwell and Haswell microcode updates with instructions to no longer distribute the affected microcode. As such, Lenovo has withdrawn previously issued UEFI firmware containing the affected Broadwell and Haswell CPU microcode.
http://www.dell.com/support/article/...-?lang=en#bios
Quote:
Intel has communicated a potential issue with the microcode included in these BIOS updates for Intel Xeon Haswell and Broadwell processors listed below.
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Last edited by e1-531g; 14th January 2018 at 02:37 PM. Reason: Added edit, because saw Theo de Raadt mail to tech
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Old 14th January 2018
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I'm running -current with the Intel firmware and having no issues, but on a Sandy Bridge (I5-2520M).
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Old 14th January 2018
e1-531g e1-531g is offline
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Quote:
Originally Posted by jggimi View Post
I'm running -current with the Intel firmware and having no issues, but on a Sandy Bridge (I5-2520M).
I think that Intel does not prepared microcode update for Sandy Bridge yet. Older generations, such as Sandy Bridge, are going to receive microcode updates to mitiagate Spectre later. Probably February or even March.
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Old 15th January 2018
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The January 8 microcode update was applicable, according to Intel, but it may just be an all-inclusive package.
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Old 15th January 2018
e1-531g e1-531g is offline
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Quote:
Originally Posted by jggimi View Post
The January 8 microcode update was applicable, according to Intel, but it may just be an all-inclusive package.
I extracted that archive and in release notes I don't see any Sandy Bridge update, but maybe these shortcuts and numbers are hiding Sandy Bridge from me.

Quote:
-- Updates upon 20171117 release --
IVT C0 (06-3e-04:ed) 428->42a
SKL-U/Y D0 (06-4e-03:c0) ba->c2
BDW-U/Y E/F (06-3d-04:c0) 25->28
HSW-ULT Cx/Dx (06-45-01:72) 20->21
Crystalwell Cx (06-46-01:32) 17->18
BDW-H E/G (06-47-01:22) 17->1b
HSX-EX E0 (06-3f-04:80) 0f->10
SKL-H/S R0 (06-5e-03:36) ba->c2
HSW Cx/Dx (06-3c-03:32) 22->23
HSX C0 (06-3f-02:6f) 3a->3b
BDX-DE V0/V1 (06-56-02:10) 0f->14
BDX-DE V2 (06-56-03:10) 700000d->7000011
KBL-U/Y H0 (06-8e-09:c0) 62->80
KBL Y0 / CFL D0 (06-8e-0a:c0) 70->80
KBL-H/S B0 (06-9e-09:2a) 5e->80
CFL U0 (06-9e-0a:22) 70->80
CFL B0 (06-9e-0b:02) 72->80
SKX H0 (06-55-04:b7) 2000035->200003c
GLK B0 (06-7a-01:01) 1e->22
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Old 15th January 2018
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There is microcode for it, but it doesn't appear to have been updated since November 17.
  • The web page lists the CPU in its "This download is valid for the product(s) listed below" section.
  • The kernel searches for /etc/firmware/intel/06-2a-07 which is included in the bundle.
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Old 23rd January 2018
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Default Any sufficiently advanced bug is indistinguishable from a feature...

It looks like Linus Torvalds is not happy with Intel again apparently because Intel is treating bug fixing as a optional "feature".

http://www.theregister.co.uk/2018/01...tre_fix_linux/
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Old 23rd January 2018
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https://newsroom.intel.com/news/root...-and-partners/
Quote:
As we start the week, I want to provide an update on the reboot issues we reported Jan. 11. We have now identified the root cause for Broadwell and Haswell platforms, and made good progress in developing a solution to address it. Over the weekend, we began rolling out an early version of the updated solution to industry partners for testing, and we will make a final release available once that testing has been completed.
http://www.dell.com/support/article/...oducts?lang=en
Quote:
Intel has communicated new guidance regarding the "reboot issues" with the microcode included in the BIOS updates released to address Spectre (Variant 2), CVE-2017-5715.
[..]
As a reminder, the Operating System patches are not impacted and still provide mitigations to Spectre (Variant 1) and Meltdown (Variant 3). The microcode update is only required for Spectre (Variant 2), CVE-2017-5715.
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Old 23rd January 2018
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Quote:
Originally Posted by comet--berkeley View Post
It looks like Linus Torvalds is not happy with Intel again apparently because Intel is treating bug fixing as a optional "feature".
I find it hard to take Torvalds seriously. "Security features" in Linux have almost always been "opt in", so not sure why he's suddenly mouthing off about this.
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Old 25th January 2018
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Richard Stallman statement:
Quote:
Originally Posted by Richard Stallman
Meltdown and Spectre are errors. Grave errors, to be sure, but not evidently malicious. Everyone makes mistakes.

Intel has done far worse with its CPUs than make a mistake. It has built in an intentional back door called the Management Engine.

Important as these bugs are, don't let Intel's mistakes distract you from Intel's deliberate attack!
https://www.fsf.org/blogs/community/...13-take-action
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Old 25th January 2018
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Quote:
Originally Posted by e1-531g View Post
Richard Stallman statement:
Personaly, I don't give any credence to him...
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Old 8th February 2018
e1-531g e1-531g is offline
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Intel releases stable Spectre patches for Skylake PCs, recovering from a bad bout of bugs

Intel’s updates come as part of a new document that tracks the progress of the microcode revisions, which will presumably continue to be updated over time.
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Old 14th February 2018
comet--berkeley comet--berkeley is offline
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Quote:
Originally Posted by gpatrick View Post
This is why I have for the longest time been saying that Linux/x86 is a bad thing to have take over the world. There should and need to be more options than just Linux and just x86_64.

The world still needs mainframes and it still needs AIX and Solaris. The world still needs Z, POWER, SPARC.
Many machines use speculative_execution and are susceptible to Spectre.

Unfortunately this may include the IBM Z system. Here is an article on Spectre changes to GCC for the system 390:

https://www.phoronix.com/scan.php?pa...tre-V2-Changes

When I look through my own old hardware, the slower simpler machines seem safer.

I have an Intel Atom D510 machine whose cpu was released in 2010. It appears to be immune to Meltdown and Spectre. It was designed to operate at low power and apparently does not do speculative execution.
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Old 17th February 2018
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32 class-action suits filed against Intel over Spectre and Meltdown flaws (Ars Technica)

32 so far ...
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Old 22nd February 2018
shep shep is offline
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MeltDown fix committed to current

https://undeadly.org/cgi?action=arti...20180221201856
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Old 3rd March 2018
e1-531g e1-531g is offline
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Date: 2018-02-28 22:09:52
Workaround solving Meltdown problem available for -release.
Quote:
Originally Posted by T.J. Townsend
Errata patches for a speculative execution flaw in Intel CPUs have been
released for OpenBSD 6.2 and 6.1.

Intel CPUs contain a flaw called "Meltdown" which allows userspace programs
to access kernel memory.

Binary updates for the amd64 platform are available via the syspatch utility.
Source code patches can be found on the respective errata pages:

https://www.openbsd.org/errata61.html
https://www.openbsd.org/errata62.html

As these affect the kernel, a reboot will be needed after patching.
https://newsroom.intel.com/wp-conten...e-guidance.pdf
Intel prepared fixed, stable microcode for Broadwell and Haswell CPUs and sent them to OEMs as part of Spectre v2 mitigation.
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Last edited by e1-531g; 3rd March 2018 at 09:52 AM. Reason: added microcode status
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Old 7th March 2018
e1-531g e1-531g is offline
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It seems Intel has fixed microcode for Ivy Bridge, Sandy Bridge and made it available for OEMs, but I don't know whether regular users can find this updated microcode at their sites.
march 6, 2018
https://newsroom.intel.com/wp-conten...e-guidance.pdf
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