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Date:	Thu, 08 Mar 2007 08:15:15 +0000
From:	Keir Fraser <>
To:	Ingo Molnar <>, Jeremy Fitzhardinge <>
CC:	Virtualization Mailing List <>,
	john stultz <>,
	LKML <>, <>,
Subject: Re: + stupid-hack-to-make-mainline-build.patch added to -mm tree

On 8/3/07 08:01, "Ingo Molnar" <> wrote:

> you are obsessed with avoiding a hypercall, but why? Granted it's slow
> especially on things like SVN/VMX, but it's not fundamentally slow. We
> definitely do not want to design our whole APIs and abstractions around
> the temporary notion that 'hypercalls are slow'. I'd expect hypercalls
> to be put into silicon just as much as SYSENTER was put into silicon.

If syscalls are already so fast, why does Linux have vgettimeofday()?

 -- Keir

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