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

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Message-ID: <52E49236.6080805@redhat.com>
Date:	Sun, 26 Jan 2014 12:42:30 +0800
From:	Jason Wang <jasowang@...hat.com>
To:	"H. Peter Anvin" <hpa@...or.com>, kys@...rosoft.com,
	haiyangz@...rosoft.com, tglx@...utronix.de, mingo@...hat.com,
	x86@...nel.org, devel@...uxdriverproject.org,
	linux-kernel@...r.kernel.org
CC:	"stable@...r.kernel.org >> Stable" <stable@...r.kernel.org>
Subject: Re: [PATCH] x86, hyperv: bypass the timer_irq_works() check

On 01/25/2014 05:20 AM, H. Peter Anvin wrote:
> 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
>
>

Oh, right.

Cc: <stable@...r.kernel.org>
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