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Re: [Qemu-devel] [PATCH] limit guest cpus for kvm enabled builds
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From: |
Paul Brook |
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Subject: |
Re: [Qemu-devel] [PATCH] limit guest cpus for kvm enabled builds |
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Date: |
Thu, 9 Apr 2009 17:05:19 +0100 |
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User-agent: |
KMail/1.9.9 |
On Thursday 09 April 2009, Bruce Rogers wrote:
> The x86 kvm kernel module limits guest cpu count to 16, but the userspace
> pc definition says 255 still. When invoking qemu-kvm with -smp > 16, it
> prints some error messages, then segfaults. One of the mistakes is that
> the error code from kvm_create_vcpu is ignored in ap_main_loop.
You should fix that bug then.
> This patch will enforce the limit at initialization time and avoid these
> problems from the get go.
No. We still want to support a decent number of cpus when -no-kvm is
specified.
Paul