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Re: [Qemu-devel] Re: [PATCH 0/7] KVM SMP support, early version

From: Glauber Costa
Subject: Re: [Qemu-devel] Re: [PATCH 0/7] KVM SMP support, early version
Date: Mon, 30 Nov 2009 14:47:31 -0200

On Mon, Nov 30, 2009 at 2:40 PM, Avi Kivity <address@hidden> wrote:
> On 11/30/2009 05:55 PM, Glauber Costa wrote:
>> reset code is responsible for most remote calls in qemu. One of the
>> only ones we still
>> have left is the gdb stuff. Do you have any suggestion to do that
>> without the current
>> on_vcpu mechanism?
> No.  But what's wrong with on_vcpu?

intrinsically racy. signal passing slow down things, etc.

That said, as I've stated many times: I don't believe there's anything
fundamentally wrong with on_vcpu. But we might get benefits from a re-design
of things to avoid it whenever possible. (just like the vcpu_reset()
I've just posted)

Glauber  Costa.
"Free as in Freedom"

"The less confident you are, the more serious you have to act."

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