iommu: fix -Diommufd=disabled when iommufd is available #47
Conversation
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
If the current system has iommufd support, -Diommufd=disabled has no-op since `__iommufd_is_available()` returns true and no envvar is set. It leads to segfault when pci device tries to get the default iommu context. This patch fixed this issue by defining -DVFN_IOMMU_FORCE_VFIO when -Diommufd=disabled is given by keeping the previous envvar VFN_IOMMU_FORCE_VFIO is working as is. Signed-off-by: Minwoo Im <minwoo.im@samsung.com>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
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Outdated suggestions cannot be applied.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.
If the current system has iommufd support, -Diommufd=disabled has no-op since
__iommufd_is_available()returns true and no envvar is set. It leads to segfault when pci device tries to get the default iommu context. This patch fixed this issue by defining -DVFN_IOMMU_FORCE_VFIO when -Diommufd=disabled is given by keeping the previous envvar VFN_IOMMU_FORCE_VFIO is working as is.