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libap: add routine to check for dynamic config support

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For a given vfio-ap mdev, determine whether or not the device will
need dynamic config operations.  This boils down to whether or not
the device is currently active + whether or not the kernel is
detected to support dynamic config operations (via the
'ap_config' sysfs attribute).

Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Anthony Krowiak <akrowiak@linux.ibm.com>
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Matthew Rosato
2024-05-29 12:28:50 -04:00
committed by Jan Höppner
parent 9c8d117cc2
commit 46dadc8cc4
2 changed files with 23 additions and 0 deletions
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include/lib/ap.h
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@@ -72,6 +72,7 @@ char *path_get_ap_udev(void);
void vfio_ap_parse_matrix(struct vfio_ap_device *dev, char *matrix);
void vfio_ap_sort_matrix_results(struct vfio_ap_device *dev);
void vfio_ap_parse_control(struct vfio_ap_device *dev, char *control);
bool vfio_ap_need_dynamic_config(struct vfio_ap_device *dev);
/* Functions for reading JSON device config */
int vfio_ap_read_device_config(const char *path, struct vfio_ap_device *dev);