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[PATCH v2 0/3] IOMMU/PCI: respect device specifics
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Fri, 17 Sep 2021 12:58:52 +0200
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- Cc: Paul Durrant <paul@xxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Delivery-date: Fri, 17 Sep 2021 10:59:08 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
It has occurred to me that the recent vPCI-related discussion about
hidden devices has some relevance also elsewhere. In the course of
addressing review comments of what is now patch 1 I then came to
notice yet another quirk.
1: VT-d: consider hidden devices when unmapping
2: VT-d: PCI segments are up to 16 bits wide
3: AMD/IOMMU: consider hidden devices when flushing device I/O TLBs
Jan
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