linux-kernel - Re: [patch 0/3] kvm tool: Serial emulation overhaul

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Date:	Tue, 13 Dec 2011 16:30:13 +0200
From:	Sasha Levin <levinsasha928@...il.com>
To:	Avi Kivity <avi@...hat.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	Pekka Enberg <penberg@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [patch 0/3] kvm tool: Serial emulation overhaul

On Tue, 2011-12-13 at 16:23 +0200, Avi Kivity wrote:
> With qemu, -cpu host or -cpu blah,+x2apic.  kvm-tool does the equivalent
> of -cpu host, so I'm surprised it doesn't show up.  x2apic has been
> recognized by the guest for a long time (ce69a784; 2.6.32, I'll be
> surprised if you have anything older than that on your machine).
> 
> Does x2apic show up in your guest's /proc/cpuinfo? 

It should be detected on the guest. kvm tool does currently have an
issue where if x2apic is enabled, MSI-X interrupts will only go to
VCPU#0 (ideas for solving that are welcome).

-- 

Sasha.

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