Re: [Xen-devel] [PATCH] x86 hvm: freeze PIT/LAPIC timer emulation while its IRQ is masked

[Kouya Shimura <kouya@xxxxxxxxxxxxxx>]

Konrad Rzeszutek Wilk writes:
> On Thu, Sep 10, 2009 at 02:47:22PM +0900, Kouya Shimura wrote:
> Content-Description: message body text
> > Hi,
> > 
> > I've found that modern windows OS never use the PIT timer,
> 
> What about older Linux versions? Like RHEL3?

older Linux uses the PIT timer. Although I don't know about RHEL3,
RHEL5 uses the PIT timer actually.

Any way, my patch doesn't give a benefit to Linux.  For example,
linux-2.6.28 (ubuntu 9.04) stops the PIT timer by itself.

Thanks,
Kouya

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