Re: [PATCH v6 26/34] iommu/amd: Allow the AMD IOMMU to work with memory encryption

From: Borislav Petkov
Date: Mon Jun 19 2017 - 13:18:37 EST

On Thu, Jun 15, 2017 at 11:33:41AM -0500, Tom Lendacky wrote:
> Changing the signature back reverts to the original way, so this can be
> looked at separate from this patchset then.

Right, the patch which added the volatile thing was this one:

4bf5beef578e ("iommu/amd: Don't put completion-wait semaphore on stack")

and the commit message doesn't say why the thing needs to be volatile at



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