Gentoo Archives: gentoo-user

From: Corbin Bird <corbinbird@×××××××.net>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Microcode updates for "old" Intel CPU's
Date: Wed, 10 Jan 2018 01:33:38
Message-Id: f7e4d46b-18c3-8925-2208-3c31a1980dd9@charter.net
In Reply to: Re: [gentoo-user] Microcode updates for "old" Intel CPU's by Mick
1 On 01/09/2018 01:56 AM, Mick wrote:
2 > On Monday, 8 January 2018 17:47:03 GMT Corbin Bird wrote:
3 >> On 01/07/2018 02:46 PM, Taiidan@×××.com wrote:
4 >>> I have several sandy/ivybridge CPU's and I was wondering if anyone
5 >>> knows as to if intel is releasing microcode updates for them.
6 >>>
7 >>> It sure would be funny if intel wanted you to buy a new CPU to fix a
8 >>> problem that was their fault to begin with.
9 >> Do you remember the x87 bugs discovered in the original i586 Pentiums?
10 >> Never fixed.
11 >> Still built into every Intel CPU.
12 >> Intel does NOT replace "defective-by-design" hardware.
13 >> Instead, every OS is required to "software emulate" the FPU.
14 >>
15 >> Search for "errata-not-bug".
16 >> Intel's term for their screw-ups in their CPUs.
17 >>
18 >> Intel is only releasing patch code for the last five years of products.
19 >>
20 >> And ... if you read up on the "e-mails" being posted ...
21 >> ... It looks as if Intel is NOT going to fix this in future CPUs either.
22 >> Instead, every OS will be required to "work-around-this".
23 >>
24 >> Perhaps the reason "someone" tried to implicate this effects ALL CPU
25 >> architectures?
26 >> ( IBM RISC 6000, PowerPC, DEC Alpha, IBM System/390, Sun SPARC64, for
27 >> example )
28 >>
29 >> Intel did try to make their "patch" mandatory for AMD CPUs ( with NO
30 >> disable switch ).
31 >> Why?
32 >> Think about it.
33 >>
34 >> Corbin
35 > So what affordable and available CPUs should one be looking into for a new
36 > desktop build?
37 >
38 > Also, laptops?
39 >
40
41 At this point, the only sure bet, is a non x86, x86_64, ARM, ARM64 CPU.
42
43 Don't know enough to make a recommendation on a particular CPU arch at
44 this point.
45
46 Try asking Taiidan@×××.com  or Ian Zimmerman ( both on gentoo-users
47 mailing list ) about PPC/PPC64.
48
49 Re-post of saved e-mail :
50 > On 12/25/2017 06:33 PM, Ian Zimmerman wrote:
51 >
52 >> On 2017-12-24 14:44, Taiidan@×××.com wrote:
53 >>
54 >>> POWER 9: TALOS 2 (server/workstation, brand new and very high
55 >>> performance - the only brand new hardware that is legitimately libre)
56 >> This is interesting, but can it run gentoo?  There's a handbook edition
57 >> for PPC64, but that's not quite the same, is it?
58 > It is.
59 > PPC64 is big endian, PPC64LE is little endian.
60 >
61 > POWER8/9 are Bi-Endian so you can use both (most linux distros only
62 > support little)
63 >
64 > PPC64 compile covers PowerPC and POWER.
65 >
66 >
67 > TALOS 2 is an end user obtainable derivative of the Romulus POWER 9
68 > development board, there are a variety of modifications and it is more
69 > open source than Romulus - you can also pay for it with bitcoin.
70 > It supports dual sforza CPU's which have up to 24 cores per socket
71 > with SMT4 (4 threads at the same time per core)

Replies

Subject Author
Re: [gentoo-user] Microcode updates for "old" Intel CPU's Rich Freeman <rich0@g.o>