linux-kernel - Re: [PATCH] kvm: move advertising of KVM_CAP

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Message-ID: <20150311001913.GA20876@amt.cnet>
Date:	Tue, 10 Mar 2015 21:19:13 -0300
From:	Marcelo Tosatti <mtosatti@...hat.com>
To:	Paolo Bonzini <pbonzini@...hat.com>
Cc:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	Greg Kurz <gkurz@...ux.vnet.ibm.com>,
	Paul Mackerras <paulus@...ba.org>, stable@...r.kernel.org
Subject: Re: [PATCH] kvm: move advertising of KVM_CAP_IRQFD to common code

On Thu, Mar 05, 2015 at 11:54:46AM +0100, Paolo Bonzini wrote:
> POWER supports irqfds but forgot to advertise them.  Some userspace does
> not check for the capability, but others check it---thus they work on
> x86 and s390 but not POWER.
> 
> To avoid that other architectures in the future make the same mistake, let
> common code handle KVM_CAP_IRQFD the same way as KVM_CAP_IRQFD_RESAMPLE.
> 
> Reported-by: Greg Kurz <gkurz@...ux.vnet.ibm.com>
> Cc: stable@...r.kernel.org
> Fixes: 297e21053a52f060944e9f0de4c64fad9bcd72fc
> Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
> ---
> 	Marcelo, please apply this for 4.0.

Applied, thanks.

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