linux-kernel - Re: [PATCH] x86, hyperv: bypass the timer_irq

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Message-ID: <52E2D904.6020608@zytor.com>
Date:	Fri, 24 Jan 2014 13:20:04 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jason Wang <jasowang@...hat.com>, kys@...rosoft.com,
	haiyangz@...rosoft.com, tglx@...utronix.de, mingo@...hat.com,
	x86@...nel.org, devel@...uxdriverproject.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86, hyperv: bypass the timer_irq_works() check

On 01/23/2014 10:02 PM, Jason Wang wrote:
> This patch bypass the timer_irq_works() check for hyperv guest since:
> 
> - It was guaranteed to work.
> - timer_irq_works() may fail sometime due to the lpj calibration were inaccurate
>   in a hyperv guest or a buggy host.
> 
> In the future, we should get the tsc frequency from hypervisor and use preset
> lpj instead.
> 
> Cc: K. Y. Srinivasan <kys@...rosoft.com>
> Cc: Haiyang Zhang <haiyangz@...rosoft.com>
> Signed-off-by: Jason Wang <jasowang@...hat.com>

This should be in -stable, right?

	-hpa


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