linux-kernel - Re: [patch -rt 2/2] KVM: lapic: mark LAPIC timer handler as irqsafe

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Message-ID: <54B6B43A.9070506@redhat.com>
Date:	Wed, 14 Jan 2015 13:23:54 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Marcelo Tosatti <mtosatti@...hat.com>,
	linux-kernel@...r.kernel.org, linux-rt-users@...r.kernel.org
CC:	Luiz Capitulino <lcapitulino@...hat.com>,
	Steven Rostedt <srostedt@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>, kvm@...r.kernel.org,
	Paolo Bonzini <pbonzini@...hat.com>
Subject: Re: [patch -rt 2/2] KVM: lapic: mark LAPIC timer handler as irqsafe

On 01/14/2015 12:12 PM, Marcelo Tosatti wrote:
> Since lapic timer handler only wakes up a simple waitqueue,
> it can be executed from hardirq context.
> 
> Reduces average cyclictest latency by 3us.
> 
> Signed-off-by: Marcelo Tosatti <mtosatti@...hat.com>

Acked-by: Rik van Riel <riel@...hat.com>

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