Skip to content

Allow RAM device regions to skip IOMMU mapping #24

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.

Sign up for GitHub

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

Open
mmhonap wants to merge 1 commit into
base: nvidia_unstable-10.1
Choose a base branch
from
Open

Allow RAM device regions to skip IOMMU mapping #24

Changes from all commits
Commits
Show all changes
1 commit
Select commit
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
14 changes: 0 additions & 14 deletions hw/vfio/listener.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -598,20 +598,6 @@ void vfio_container_region_add(VFIOContainerBase *bcontainer,
pgmask + 1);
return;
}

/*
* VFIO MMAP backed regions (CXL.mem) uses VM_IO | VM_PFNMAP VMAs
* backed by physical device addresses. Skip vfio_container_dma_map
* as mapping is not needed for this region.
*/
if (vfio_get_vfio_device(memory_region_owner(section->mr))) {
trace_vfio_listener_region_add_no_dma_map(
memory_region_name(section->mr),
section->offset_within_address_space,
int128_getlo(section->size),
pgmask + 1);
return;
}
}

ret = vfio_container_dma_map(bcontainer, iova, int128_get64(llsize),
Expand Down