[pve-devel] [PATCH-SERIES v3 qemu-server/manager/common] add and set x86-64-v2 as default model for new vms and detect best cpumodel

DERUMIER, Alexandre alexandre.derumier at groupe-cyllene.com
Thu Jun 1 13:37:06 CEST 2023

Le jeudi 01 juin 2023 à 11:34 +0200, Fiona Ebner a écrit :
> Am 22.05.23 um 12:25 schrieb Alexandre Derumier:> Nahelemn is a 2008
> cpu, so I think it's ok, we are in 2013 ;)
> > (and user can disable aes flag in gui too)
> > 
> > That mean than the minimum compatible cpu for v2 is Intel Westmere
> > (2010)
> > and Amd Bulldozer (2011).
> > 
> Unfortunately, it doesn't seem to be rock stable on AMD hosts :( When
> using Nehalem on my AMD Ryzen Threadripper 2920X, I get hangs during
> installation of Debian 11 and for an already existing one, crashes
> during boot. This is with or without AES flag. Colleagues with AMD
> CPUs
> also ran into similar issues when using CPU type Nehalem.
damned :( .  Do you known which true qemu amd cpumodel is working
without any problem ?

I only have epyc v2/v3 to test on my side, and my don't have my older
opteron g4/g5 anymore.

> Note that these were not server CPUs, Aaron said, he'll test those
> later
> (please reply to here with the results :)).
> It would be bad if too many AMD CPUs aren't happy with the new
> default
> :/ In the worst case, we'd only be able to switch to the new default
> for
> Intel hosts.
> What AMD CPUs did you try it on?
epyc v2/v3 with last microcodes

does it work with x86-64-v3 ?  (because the other patch of the series
could autofind the best new model if it's working)

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