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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 13:55:19 -0200

>> But why do you need that many remote calls during init? Aren't the
>> initial ioctls issued by the vcpu threads themselves?
> Yes, but system_reset is called from the io-thread, and it fires a lot
> of ioctls.
> However, I have an already working version that does a much better job
> than that.
> Will post today with details

Btw, The approach I've taken (code to follow), was to register reset
functions that
issues ioctls in a separate handler, that later calls all of them
already in the vcpu-thread.
So, no code movement, and thus, no races.

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?

Glauber  Costa.
"Free as in Freedom"

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

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