Re: [RESEND PATCH v2] iommu/intel: Exclude devices using RMRRs from IOMMU API domains

From: Joerg Roedel
Date: Tue Jul 29 2014 - 11:44:27 EST

On Thu, Jul 03, 2014 at 09:57:02AM -0600, Alex Williamson wrote:
> The user of the IOMMU API domain expects to have full control of
> the IOVA space for the domain. RMRRs are fundamentally incompatible
> with that idea. We can neither map the RMRR into the IOMMU API
> domain, nor can we guarantee that the device won't continue DMA with
> the area described by the RMRR as part of the new domain. Therefore
> we must prevent such devices from being used by the IOMMU API.
> Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
> Cc: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx

Applied, thanks Alex.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at