From: Paolo Bonzini <pbonzini@redhat.com>
To: Wei Huang <wei@redhat.com>, afaerber@suse.de
Cc: qemu-devel@nongnu.org
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 [thread overview]
Message-ID: <543453D9.8020706@redhat.com> (raw)
In-Reply-To: <1412711059-12524-1-git-send-email-wei@redhat.com>
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
next prev parent reply other threads:[~2014-10-07 20:58 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-07 19:44 [Qemu-devel] [PATCH 1/1] target-i386: prevent users from setting threads>1 for AMD CPUs Wei Huang
2014-10-07 20:58 ` Paolo Bonzini [this message]
2014-10-07 21:16 ` Wei Huang
2014-10-07 21:36 ` Paolo Bonzini
2014-10-08 0:41 ` Wei Huang
2014-10-08 7:47 ` Paolo Bonzini
2014-10-09 20:22 ` Wei Huang
2014-10-09 21:08 ` Paolo Bonzini
2014-10-09 22:16 ` Eduardo Habkost
2014-10-21 15:11 ` Wei Huang
-- strict thread matches above, loose matches on Subject: below --
2014-10-07 19:17 Wei Huang
2014-10-07 19:42 ` Wei Huang
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