From: "H. Peter Anvin" <hpa@zytor.com>
To: Jason Wang <jasowang@redhat.com>,
kys@microsoft.com, haiyangz@microsoft.com, tglx@linutronix.de,
mingo@redhat.com, x86@kernel.org, devel@linuxdriverproject.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86, hyperv: bypass the timer_irq_works() check
Date: Fri, 24 Jan 2014 13:20:04 -0800 [thread overview]
Message-ID: <52E2D904.6020608@zytor.com> (raw)
In-Reply-To: <1390543371-10748-1-git-send-email-jasowang@redhat.com>
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@microsoft.com>
> Cc: Haiyang Zhang <haiyangz@microsoft.com>
> Signed-off-by: Jason Wang <jasowang@redhat.com>
This should be in -stable, right?
-hpa
next prev parent reply other threads:[~2014-01-24 21:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-24 6:02 [PATCH] x86, hyperv: bypass the timer_irq_works() check Jason Wang
2014-01-24 21:16 ` KY Srinivasan
2014-01-24 21:20 ` H. Peter Anvin [this message]
2014-01-26 4:42 ` Jason Wang
2014-02-11 8:30 ` Jason Wang
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