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 Forum index » Off-Topic Area » Security
Microcode update howto
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ozsouth

Joined: 01 Jan 2010
Posts: 859
Location: S.E Australia

PostPosted: Thu 14 Nov 2019, 03:14    Post subject:  

I've made a 64bit .cpio 13-Nov-2019 microcode update file. Have had no success making 32bit files (64bit x86_64 kernel works if 64bit cpu).
** Superseded - see below.

Last edited by ozsouth on Mon 18 Nov 2019, 22:16; edited 1 time in total
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backi

Joined: 27 Feb 2011
Posts: 2004
Location: GERMANY

PostPosted: Thu 14 Nov 2019, 04:46    Post subject:  

Fine !! .....but I am just a Newbie .......How to use it ????

Thanks in Advance !
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belham2

Joined: 15 Aug 2016
Posts: 1743

PostPosted: Thu 14 Nov 2019, 05:45    Post subject:  

backi wrote:
Fine !! .....but I am just a Newbie .......How to use it ????

Thanks in Advance !


Laughing Laughing But I'm just a newbie? Laughing Laughing

Yup, and I'm just a very young man trapped in a very, very, VERY old body.

Backi Backi, Backi.....calling Backi---please come back from that hand-holding Ddog world.

A cpio file, iirc, can be used for:

1) Copying files (to an archive)
2) Extracting (from an archive)
3) Passing files (to another directory tree)

Maybe we might put or extract whatever (the pup we're using) pup's initrd into a directory (cat ../initrd | cpio -i -d -m), then copy the .cpio file into it that extracted initrd directory, and then re-close the directory back up (find . | cpio -o -H newc > ../initrd) to make our pup's initrd again.

After that, we'll now have the microcode update (and thanks, Ozsouth!!)

But don't quote me, I'm too just a newbie here Wink
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backi

Joined: 27 Feb 2011
Posts: 2004
Location: GERMANY

PostPosted: Thu 14 Nov 2019, 06:54    Post subject:  

Hi Belham !
Nice to meet you.......again .
You make yourself quite scarce here in the last time .

Thanks for Support .......but i suppose it will anyway not apply to me since i am on Bionic Dog or other Dogs mostly .
Seems an Upgrade did the Trick .....not quite sure .

Nevertheless ......
Best wishes out of the " Coming Dystopistan " aka " New Shitholistan ".....formerly known as " Merry old Germany " !
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ozsouth

Joined: 01 Jan 2010
Posts: 859
Location: S.E Australia

PostPosted: Thu 14 Nov 2019, 08:57    Post subject:  

See the first posts in this thread - hopefully explains usage. (@belham2 - it's fortuantely much simpler than you'd think).
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ozsouth

Joined: 01 Jan 2010
Posts: 859
Location: S.E Australia

PostPosted: Mon 18 Nov 2019, 07:17    Post subject:  

I've made an early-load 64bit .cpio 15-Nov-2019 microcode update file. * Superseded - see below
Last edited by ozsouth on Sat 09 May 2020, 08:30; edited 1 time in total
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Marv


Joined: 04 May 2005
Posts: 1265
Location: SW Wisconsin

PostPosted: Tue 19 Nov 2019, 10:56    Post subject:  

ozsouth wrote:
I've made an early-load 64bit .cpio 15-Nov-2019 microcode update file. For usage, see first post in thread. Have had no success making 32bit files (64bit x86_64 kernel with 64bit cpu works). http://s000.tinyupload.com/?file_id=01955419540255832594
Loads fine on the 2nd gen i5, Sandy Bridge. Nothing new in the intel release for that CPU as of yet. I think they are focussing on vulns in much newer processors at this point. Mitigation on my hardware running a 64b 5.3.10 kernel in the current LxPupSc remains at:
Code:
l1tf:Mitigation: PTE Inversion
mds:Mitigation: Clear CPU buffers; SMT vulnerable
meltdown:Mitigation: PTI
spec_store_bypass:Mitigation: Speculative Store Bypass disabled via prctl and seccomp
swapgs barriers and __user pointer sanitization
spectre_v2:Mitigation: Full generic retpoline, IBPB: conditional, IBRS_FW, STIBP: conditional, RSB filling


Thanks,

_________________
Pups currently in kennel Very Happy Older LxPupSc and X-slacko-4.4 for my users; LxPupSc, LxPupSc64 and upupEF for me. All good pups indeed, and all running savefiles for look'n'feel only. Browsers, etc. solely from SFS.
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peebee


Joined: 21 Sep 2008
Posts: 4387
Location: Worcestershire, UK

PostPosted: Sat 09 May 2020, 02:06    Post subject:  

New release:

https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/releases/tag/microcode-20200508

_________________
LxPup = Puppy + LXDE
Main version used daily: LxPupSc; Assembler of UPups, ScPup & ScPup64, LxPup, LxPupSc & LxPupSc64
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ozsouth

Joined: 01 Jan 2010
Posts: 859
Location: S.E Australia

PostPosted: Sat 09 May 2020, 08:36    Post subject:  

I've made an early-load 64bit .cpio 08-May-2020 microcode update file. SUPERSEDED - see below
Last edited by ozsouth on Thu 21 May 2020, 08:25; edited 1 time in total
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peebee


Joined: 21 Sep 2008
Posts: 4387
Location: Worcestershire, UK

PostPosted: Thu 21 May 2020, 01:51    Post subject:  

New release:

https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/releases/tag/microcode-20200520

_________________
LxPup = Puppy + LXDE
Main version used daily: LxPupSc; Assembler of UPups, ScPup & ScPup64, LxPup, LxPupSc & LxPupSc64
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ozsouth

Joined: 01 Jan 2010
Posts: 859
Location: S.E Australia

PostPosted: Thu 21 May 2020, 07:23    Post subject:  

I've made an early-load 64bit .cpio 20-May-2020 microcode update file. SUPERSEDED - see below.
Last edited by ozsouth on Thu 18 Jun 2020, 02:25; edited 3 times in total
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peebee


Joined: 21 Sep 2008
Posts: 4387
Location: Worcestershire, UK

PostPosted: Tue 09 Jun 2020, 14:12    Post subject:  

New release:

https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/releases/tag/microcode-20200609

_________________
LxPup = Puppy + LXDE
Main version used daily: LxPupSc; Assembler of UPups, ScPup & ScPup64, LxPup, LxPupSc & LxPupSc64
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ozsouth

Joined: 01 Jan 2010
Posts: 859
Location: S.E Australia

PostPosted: Tue 09 Jun 2020, 21:48    Post subject:  

I've made an early-load 64bit .cpio 09-Jun-2020 microcode update file. SUPERSEDED - see below.
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ozsouth

Joined: 01 Jan 2010
Posts: 859
Location: S.E Australia

PostPosted: Wed 17 Jun 2020, 05:44    Post subject:  

I've made an early-load 64bit .cpio 16-Jun-2020 microcode update file. For usage, see first post in thread.
is here: http://www.filepup.net/files/f517323b1592386679.html

NOTE: Runs my CPU better than 9th June 20 one did.
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perdido


Joined: 09 Dec 2013
Posts: 1591
Location: ¿Altair IV , Just north of Eeyore Junction.?

PostPosted: Wed 17 Jun 2020, 18:42    Post subject:  

If I understand correctly this microcode update only works on 64-bit kernels.
To use this on a 32-bit linux build would require a kernel change to a 64-bit kernel?
Just wondering.
--
Edit: Not wondering any more. See below.

Ozsouth already answered this - so for anyone thats wondering.
http://murga-linux.com/puppy/viewtopic.php?p=1030126#1030126

.
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