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From: | Paolo Bonzini |
Subject: | Re: [Qemu-devel] [PATCH 1/1] target-i386: prevent users from setting threads>1 for AMD CPUs |
Date: | Tue, 07 Oct 2014 22:58:01 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.1.1 |
Il 07/10/2014 21:44, Wei Huang ha scritto: > AMD CPU doesn't support hyperthreading. Even though QEMU fixes > this issue by setting CPUID_0000_0001_EBX and CPUID_8000_0008_ECX > via conversion, it is better to stop end-users in the first place > with a warning message. Hi Wei, what exactly breaks if you try creating an AMD VM with hyperthreading? I am worried that the default CPU is an AMD one when KVM is disabled, and thus "qemu-system-x86_64 -smp threads=2" will likely be broken. Paolo
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