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Subject: Re: [PATCH] calibrate_tsc(): use the Stall() EFI boot service on
	GRUB_MACHINE_EFI
To: The development of GNU GRUB <grub-devel@gnu.org>, vkuznets@redhat.com,
	decui@microsoft.com, pjones@redhat.com, lersek@redhat.com
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26.11.2014 11:59, Laszlo Ersek пишет:
> HyperV Gen2 virtual machines have no PIT; guest code should rely on UEFI
> services instead.
> 


Could you retest with current master? It now supports multiple methods
to calibrate TSC and should avoid PIT on UEFI systems.