linux-kernel - Re: [PATCH] kvm: don't take vcpu mutex for obviously invalid vcpu ioctls

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Message-ID: <542094AC.6070908@redhat.com>
Date:	Mon, 22 Sep 2014 23:29:16 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Marcelo Tosatti <mtosatti@...hat.com>,
	David Matlack <dmatlack@...gle.com>
CC:	Gleb Natapov <gleb@...nel.org>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kvm: don't take vcpu mutex for obviously invalid vcpu
 ioctls

Il 22/09/2014 22:08, Marcelo Tosatti ha scritto:
> > This patch does not change functionality, it just makes invalid ioctls
> > fail faster.
> 
> Should not be executing vcpu ioctls without interrupt KVM_RUN in the
> first place.

This is not entirely true, there are a couple of asynchronous ioctls
though they are not used on x86 (commit 2122ff5eab8f, KVM: move vcpu
locking to dispatcher for generic vcpu ioctls, 2010-05-13).

Paolo
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