CVE-2026-68329 iommu/amd: Wait for completion instead of returning early in iommu_completion_wait()

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Wait for completion instead of returning early in iommucompletionwait needsync is a per-IOMMU flag shared by all domains and devices behind that IOMMU. It is set whenever a command is queued with sync == true and clear...

drm/amd/display: Wake DMCUB before sending a command

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