diff options
| author | Michal Wajdeczko <michal.wajdeczko@intel.com> | 2026-02-18 21:55:52 +0100 |
|---|---|---|
| committer | Michal Wajdeczko <michal.wajdeczko@intel.com> | 2026-02-20 15:50:08 +0100 |
| commit | 9ca192cbcd5b9baefdc3c4a0d2740e04a427cd18 (patch) | |
| tree | 58ee581cbdf1b35f31d042524bd32096a688bee7 /Documentation/ABI/testing | |
| parent | d039fa856ee190ae8cd799800972137a00b55d43 (diff) | |
drm/xe/pf: Add documentation for vram_quota
Add initial documentation for recently added VRAM provisioning
Xe driver specific SR-IOV sysfs files under device/sriov_admin.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/20260218205553.3561-11-michal.wajdeczko@intel.com
Diffstat (limited to 'Documentation/ABI/testing')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-driver-intel-xe-sriov | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-intel-xe-sriov b/Documentation/ABI/testing/sysfs-driver-intel-xe-sriov index 7f5ef9eada53..1d6eaff6882f 100644 --- a/Documentation/ABI/testing/sysfs-driver-intel-xe-sriov +++ b/Documentation/ABI/testing/sysfs-driver-intel-xe-sriov @@ -129,6 +129,37 @@ Description: -EIO if FW refuses to change the provisioning. +What: /sys/bus/pci/drivers/xe/.../sriov_admin/.bulk_profile/vram_quota +What: /sys/bus/pci/drivers/xe/.../sriov_admin/vf<n>/profile/vram_quota +Date: February 2026 +KernelVersion: 7.0 +Contact: intel-xe@lists.freedesktop.org +Description: + These files allow to perform initial VFs VRAM provisioning prior to VFs + enabling or to change VFs VRAM provisioning once the VFs are enabled. + Any non-zero initial VRAM provisioning will block VFs auto-provisioning. + Without initial VRAM provisioning those files will show result of the + VRAM auto-provisioning performed by the PF once the VFs are enabled. + Once the VFs are disabled, all VRAM provisioning will be released. + These files are visible only on discrete Intel Xe platforms with VRAM + and are writeable only if dynamic VFs VRAM provisioning is supported. + + .bulk_profile/vram_quota: (WO) unsigned integer + The amount of the provisioned VRAM in [bytes] for each VF. + Actual quota value might be aligned per HW/FW requirements. + + profile/vram_quota: (RW) unsigned integer + The amount of the provisioned VRAM in [bytes] for this VF. + Actual quota value might be aligned per HW/FW requirements. + + Default is 0 (unprovisioned). + + Writes to these attributes may fail with errors like: + -EINVAL if provided input is malformed or not recognized, + -EPERM if change is not applicable on given HW/FW, + -EIO if FW refuses to change the provisioning. + + What: /sys/bus/pci/drivers/xe/.../sriov_admin/vf<n>/stop Date: October 2025 KernelVersion: 6.19 |