N1 spectre or meltdown

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audiotechguy
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N1 spectre or meltdown

Unread post by audiotechguy » Sat Jun 02, 2018 8:23 am

With this new SOC be vulnerable to spectate or meltdown


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Re: N1 spectre or meltdown

Unread post by crashoverride » Sat Jun 02, 2018 10:15 am

Yes, the "big" A72 cores are affected.

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Re: N1 spectre or meltdown

Unread post by audiotechguy » Sat Jun 02, 2018 11:49 am

Oh ic, oh well


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elatllat
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Re: N1 spectre or meltdown

Unread post by elatllat » Wed Jan 02, 2019 12:52 am

Arm CPUs [that] are not vulnerable... include Cortex-A76, Cortex-A53, Cortex-A55, Cortex-A32, Cortex-A7 and Cortex-A5.

https://github.com/ARM-software/arm-tru ... sory-TFV-6

Hope the N3 is Cortex-A76

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Re: N1 spectre or meltdown

Unread post by nobe » Wed Jan 02, 2019 3:44 am

didn't odroid wrote somewhere N2 would be A73 based ?

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Re: N1 spectre or meltdown

Unread post by elatllat » Wed Jan 02, 2019 9:17 am

Yes, thus "N3" is where hope lies... but pinning VMs, containers, etc to the small cores of a RK3399 seems like the best immediate solution.

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Re: N1 spectre or meltdown

Unread post by tkaiser » Mon Jan 07, 2019 5:46 pm

elatllat wrote:
Wed Jan 02, 2019 12:52 am
Hope the N3 is Cortex-A76
See Variant 1) and 4) here: https://developer.arm.com/support/arm-s ... nerability

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Re: N1 spectre or meltdown

Unread post by elatllat » Mon Jan 07, 2019 10:58 pm

ug, conflicting info, I guess A55 is the best safe one then.
or the A53 24 core. The issue with the last link is it doesn't explicitly list the safe one minute just omits some.

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Re: N1 spectre or meltdown

Unread post by elatllat » Mon Jun 03, 2019 2:01 am

Code: Select all

N2> uname -r && cd /sys/devices/system/cpu/vulnerabilities/ && grep . *
5.2.0-rc2
l1tf:Not affected
mds:Not affected
meltdown:Not affected
spec_store_bypass:Vulnerable
spectre_v1:Mitigation: __user pointer sanitization
spectre_v2:Vulnerable

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mad_ady
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Re: N1 spectre or meltdown

Unread post by mad_ady » Mon Jun 03, 2019 2:11 am

Nice. What kernel source are you using?

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Re: N1 spectre or meltdown

Unread post by elatllat » Mon Jun 03, 2019 2:58 am

mad_ady wrote:
Mon Jun 03, 2019 2:11 am
Nice. What kernel source are you using?
Note I'm commenting on the N2 in an N1 thread, but it was future looking so thought it was more on topic than the N2 mainline kernel thread you already found.

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Re: N1 spectre or meltdown

Unread post by mad_ady » Mon Jun 03, 2019 3:29 am

Oh, I hadn't noticed it was about N2. I thought mainline on N1 got magically easier. Last time I tried I had problems.

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Re: N1 spectre or meltdown

Unread post by elatllat » Mon Jun 03, 2019 3:35 am

Yah every so often I consider getting the N1 up (especially because I added passive cooling) but then I remind myself it's such a power hog, and we can't buy more, so I cut my financial/emotional losses and am happy with the N2.

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Re: N1 spectre or meltdown

Unread post by mad_ady » Mon Jun 03, 2019 12:50 pm

I'm happy with mine as a NAS with SATA drives. Also enabled docker support in the kernel. Has been rock solid, unlike the XU4 it replaced.

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