From: Zhenzhong Duan
Several functions need to iterate over the VFIO devices attached to
a given container. This is currently achieved by iterating over the
groups attached to the container and then over the devices in the group.
Let's introduce a per container device list that simplifies this
From: Yi Liu
Move all the code really dependent on the legacy VFIO container/group
into a separate file: container.c. What does remain in common.c is
the code related to VFIOAddressSpace, MemoryListeners, migration and
all other general operations.
Signed-off-by: Eric Auger
Signed-off-by: Yi
-20231006
for you to fetch changes up to 6e86aaef9ac57066aa923211a164df95b7b3cdf7:
vfio/common: Move legacy VFIO backend code into separate container.c
(2023-10-05 22:04:52 +0200)
vfio queue:
* Fix for VFIO display when using Intel
From: Jing Liu
The vector_use callback is used to enable vector that is unmasked in
guest. The kernel used to only support static MSI-X allocation. When
allocating a new interrupt using "static MSI-X allocation" kernels,
QEMU first disables all previously allocated vectors and then
re-allocates
From: Jing Liu
Kernel provides the guidance of dynamic MSI-X allocation support of
passthrough device, by clearing the VFIO_IRQ_INFO_NORESIZE flag to
guide user space.
Fetch the flags from host to determine if dynamic MSI-X allocation is
supported.
Originally-by: Reinette Chatre
From: Zhenzhong Duan
Move the reset handler registration/unregistration to a place that is not
group specific. vfio_[get/put]_address_space are the best places for that
purpose.
Signed-off-by: Eric Auger
Signed-off-by: Yi Liu
Signed-off-by: Zhenzhong Duan
Reviewed-by: Cédric Le Goater
From: Alex Williamson
The below referenced commit renames scanout_width/height to
backing_width/height, but also promotes these fields in various portions
of the egl interface. Meanwhile vfio dmabuf support has never used the
previous scanout fields and is therefore missed in the update. This
From: Zhenzhong Duan
let's store the parent contaienr within the VFIODevice.
This simplifies the logic in vfio_viommu_preset() and
brings the benefice to hide the group specificity which
is useful for IOMMUFD migration.
Signed-off-by: Eric Auger
Signed-off-by: Zhenzhong Duan
[ clg: Add test
From: Zhenzhong Duan
Some functions iterate over all the VFIODevices. This is currently
achieved by iterating over all groups/devices. Let's
introduce a global list of VFIODevices simplifying that scan.
This will also be useful while migrating to IOMMUFD by hiding the
group specificity.
From: Eric Auger
Let the vfio-platform device use vfio_attach_device() and
vfio_detach_device(), hence hiding the details of the used
IOMMU backend.
Drop the trace event for vfio-platform as we have similar
one in vfio_attach_device.
Signed-off-by: Eric Auger
Signed-off-by: Yi Liu
From: Jing Liu
During migration restoring, vfio_enable_vectors() is called to restore
enabling MSI-X interrupts for assigned devices. It sets the range from
0 to nr_vectors to kernel to enable MSI-X and the vectors unmasked in
guest. During the MSI-X enabling, all the vectors within the range
From: Zhenzhong Duan
Introduce two new helpers, vfio_kvm_device_[add/del]_fd
which take as input a file descriptor which can be either a group fd or
a cdev fd. This uses the new KVM_DEV_VFIO_FILE VFIO KVM device group,
which aliases to the legacy KVM_DEV_VFIO_GROUP.
From: Eric Auger
Introduce helper functions that isolate the code used for
VFIO_SPAPR_TCE_v2_IOMMU.
Those helpers hide implementation details beneath the container object
and make the vfio_listener_region_add/del() implementations more
readable. No code change intended.
Signed-off-by: Eric
From: Zhenzhong Duan
vfio_put_device() is a VFIO PCI specific function, rename it with
'vfio_pci' prefix to avoid confusing.
No functional change.
Suggested-by: Cédric Le Goater
Signed-off-by: Zhenzhong Duan
Signed-off-by: Cédric Le Goater
---
hw/vfio/pci.c | 4 ++--
1 file changed, 2
From: Yi Liu
Move low-level iommu agnostic helpers to a separate helpers.c
file. They relate to regions, interrupts, device/region
capabilities and etc.
Signed-off-by: Eric Auger
Signed-off-by: Yi Sun
Signed-off-by: Yi Liu
Signed-off-by: Zhenzhong Duan
Reviewed-by: Cédric Le Goater
From: Zhenzhong Duan
Since commit da3c22c74a3c ("linux-headers: Update to Linux v6.6-rc1"),
linux-headers has been updated to v6.6-rc1.
As previous patch added iommufd.h to update-linux-headers.sh,
run the script again against TAG v6.6-rc1 to have iommufd.h included.
Signed-off-by: Zhenzhong
From: Eric Auger
Update the script to import iommufd.h
Signed-off-by: Eric Auger
Signed-off-by: Yi Liu
Signed-off-by: Zhenzhong Duan
Reviewed-by: Cédric Le Goater
Signed-off-by: Cédric Le Goater
---
scripts/update-linux-headers.sh | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
From: Jing Liu
Guests typically enable MSI-X with all of the vectors masked in the MSI-X
vector table. To match the guest state of device, QEMU enables MSI-X by
enabling vector 0 with userspace triggering and immediately release.
However the release function actually does not release it due to
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