Re: [PATCH v2 2/4] iommu/vt-d: Enable write protect propagation from guest

On 3/2/21 6:13 PM, Jacob Pan wrote: Write protect bit, when set, inhibits supervisor writes to the read-only pages. In guest supervisor shared virtual addressing (SVA), write-protect should be honored upon guest bind supervisor PASID request. This patch extends the VT-d portion of the IOMMU

[PATCH v2 2/4] iommu/vt-d: Enable write protect propagation from guest

Write protect bit, when set, inhibits supervisor writes to the read-only pages. In guest supervisor shared virtual addressing (SVA), write-protect should be honored upon guest bind supervisor PASID request. This patch extends the VT-d portion of the IOMMU UAPI to include WP bit. WPE bit of the