Re: [PATCH 11/18] Perform hardware_enable in CPU_STARTING callback

From: Rik van Riel
Date: Wed Jul 14 2010 - 22:15:39 EST


On 07/12/2010 10:25 PM, Zachary Amsden wrote:
The CPU_STARTING callback was added upstream with the intention
of being used for KVM, specifically for the hardware enablement
that must be done before we can run in hardware virt. It had
bugs on the x86_64 architecture at the time, where it was called
after CPU_ONLINE. The arches have since merged and the bug is
gone.

It might be noted other features should probably start making
use of this callback; microcode updates in particular which
might be fixing important erratums would be best applied before
beginning to run user tasks.

Signed-off-by: Zachary Amsden<zamsden@xxxxxxxxxx>

Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>

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