You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This complements the existing xen_domctl_assign_dt_device() helper by exposing the XEN_DOMCTL_deassign_device domctl for Device Tree devices, allowing Dom0 to cleanly revoke a previously assigned device.
Implementation details
Add xen_domctl_deassign_dt_device() in drivers/xen/dom0/domctl.c:
Initializes xen_domctl_t with cmd = XEN_DOMCTL_deassign_device.
Uses XEN_DOMCTL_DEV_DT and sets u.assign_device.u.dt.size based on the DT path length.
Uses set_xen_guest_handle() to point to the DT path and calls do_domctl().
Declare the new helper and document its semantics in include/zephyr/xen/dom0/domctl.h.
Rationale
Provides a symmetric API to xen_domctl_assign_dt_device() for DT devices.
Makes it possible for Zephyr-based Dom0 code to explicitly deassign passthrough devices without re-implementing the domctl call.
Testing
Built Zephyr that is running under Xen as Dom0 with this change.
Verified device assignment and subsequent deassignment via xen_domctl_assign_dt_device() / xen_domctl_deassign_dt_device() in a Xen + Zephyr Dom0
environment.
Hello @Elwimen, and thank you very much for your first pull request to the Zephyr project!
Our Continuous Integration pipeline will execute a series of checks on your Pull Request commit messages and code, and you are expected to address any failures by updating the PR. Please take a look at our commit message guidelines to find out how to format your commit messages, and at our contribution workflow to understand how to update your Pull Request. If you haven't already, please make sure to review the project's Contributor Expectations and update (by amending and force-pushing the commits) your pull request if necessary.
If you are stuck or need help please join us on Discord and ask your question there. Additionally, you can escalate the review when applicable. 😊
Add wrapper function for XEN_DOMCTL_deassign_device hypercall to
support deassigning device tree devices from guest domains.
Signed-off-by: Damjan Belavic <damjan_belavic@epam.com>
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Elwimen
force-pushed
the
xen-dom0-deassign-device
branch
from
This complements the existing xen_domctl_assign_dt_device() helper by exposing the XEN_DOMCTL_deassign_device domctl for Device Tree devices, allowing Dom0 to cleanly revoke a previously assigned device.
Implementation details
Rationale
Testing
environment.