Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Clarification updates to IOMMU v1.0.1 #441

Open
wants to merge 3 commits into
base: main
Choose a base branch
from
Open
Changes from 1 commit
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
Next Next commit
Clarify translation size when both stages are bare is imp-def
ved-rivos committed Dec 21, 2024
commit 15c70fa9ee3f4d7dc13f27e358cd4f738a0f6b03
8 changes: 8 additions & 0 deletions src/iommu_data_structures.adoc
Original file line number Diff line number Diff line change
@@ -1314,6 +1314,14 @@ This is accomplished by setting "Untranslated Access Only" (U) field of the
returned response to 1.
====

[NOTE]
====
The translation range size returned in a Success response to an ATS translation
request, when either stages of address translation are Bare, is
implementation-defined. However, it is recommended that the translation range
size be large, such as 2 MiB or 1 GiB.
====

When a Success response is generated for an ATS translation request, the setting
of the Priv, N, CXL.io, Global, and AMA fields is as follows: